./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c --- 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-b5237d8 [2022-11-21 16:40:34,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:40:34,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:40:34,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:40:34,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:40:34,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:40:34,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:40:34,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:40:34,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:40:34,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:40:34,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:40:34,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:40:34,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:40:34,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:40:34,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:40:34,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:40:34,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:40:34,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:40:34,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:40:34,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:40:34,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:40:34,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:40:34,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:40:34,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:40:34,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:40:34,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:40:34,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:40:34,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:40:34,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:40:34,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:40:34,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:40:34,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:40:34,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:40:34,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:40:34,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:40:34,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:40:34,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:40:34,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:40:34,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:40:34,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:40:34,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:40:34,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:40:34,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:40:34,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:40:34,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:40:34,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:40:34,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:40:34,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:40:34,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:40:34,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:40:34,458 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:40:34,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:40:34,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:40:34,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:40:34,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:40:34,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:40:34,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:40:34,459 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:40:34,460 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:40:34,460 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:40:34,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:40:34,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:40:34,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:40:34,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:40:34,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:40:34,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:40:34,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:40:34,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:40:34,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:40:34,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:40:34,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:40:34,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:40:34,462 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_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b2cf85bdf3ceca18f859bba09ed8bf6de8160130db2f8571365ac2bc4f0e30c [2022-11-21 16:40:34,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:40:34,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:40:34,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:40:34,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:40:34,735 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:40:34,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/forester-heap/dll-circular-2.i [2022-11-21 16:40:37,773 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:40:38,032 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:40:38,032 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i [2022-11-21 16:40:38,043 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/data/a51bf4ec5/e346e28ed94e40e9adfe46359c621ce4/FLAG9720381e9 [2022-11-21 16:40:38,059 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/data/a51bf4ec5/e346e28ed94e40e9adfe46359c621ce4 [2022-11-21 16:40:38,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:40:38,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:40:38,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:40:38,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:40:38,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:40:38,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac4cf22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38, skipping insertion in model container [2022-11-21 16:40:38,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:40:38,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:40:38,413 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22391,22404] [2022-11-21 16:40:38,423 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22497,22510] [2022-11-21 16:40:38,426 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22622,22635] [2022-11-21 16:40:38,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:40:38,452 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:40:38,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22391,22404] [2022-11-21 16:40:38,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22497,22510] [2022-11-21 16:40:38,528 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/sv-benchmarks/c/forester-heap/dll-circular-2.i[22622,22635] [2022-11-21 16:40:38,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:40:38,559 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:40:38,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38 WrapperNode [2022-11-21 16:40:38,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:40:38,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:40:38,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:40:38,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:40:38,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,606 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2022-11-21 16:40:38,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:40:38,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:40:38,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:40:38,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:40:38,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:40:38,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:40:38,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:40:38,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:40:38,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (1/1) ... [2022-11-21 16:40:38,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:40:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:38,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:40:38,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:40:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:40:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:40:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:40:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:40:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:40:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:40:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:40:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:40:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:40:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:40:38,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:40:38,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:40:39,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:40:39,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:40:39,343 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-21 16:40:39,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:39 BoogieIcfgContainer [2022-11-21 16:40:39,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:40:39,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:40:39,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:40:39,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:40:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:40:38" (1/3) ... [2022-11-21 16:40:39,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aec664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:40:39, skipping insertion in model container [2022-11-21 16:40:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:38" (2/3) ... [2022-11-21 16:40:39,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aec664f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:40:39, skipping insertion in model container [2022-11-21 16:40:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:39" (3/3) ... [2022-11-21 16:40:39,354 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2022-11-21 16:40:39,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:40:39,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2022-11-21 16:40:39,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:40:39,430 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;@7be9c73b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:40:39,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-11-21 16:40:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:40:39,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:39,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:40:39,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-21 16:40:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:39,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29874994] [2022-11-21 16:40:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:39,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:39,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29874994] [2022-11-21 16:40:39,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29874994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:39,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:39,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:40:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970316378] [2022-11-21 16:40:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:39,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:39,837 INFO L87 Difference]: Start difference. First operand has 112 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:40,020 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2022-11-21 16:40:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 16:40:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:40,050 INFO L225 Difference]: With dead ends: 117 [2022-11-21 16:40:40,050 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 16:40:40,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:40,055 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 95 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 80 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 16:40:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2022-11-21 16:40:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 104 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) [2022-11-21 16:40:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-11-21 16:40:40,111 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 3 [2022-11-21 16:40:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:40,112 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-11-21 16:40:40,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-11-21 16:40:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:40:40,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:40,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:40:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:40:40,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:40,115 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-21 16:40:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:40,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721832593] [2022-11-21 16:40:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:40,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721832593] [2022-11-21 16:40:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721832593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:40,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:40,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:40:40,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146123313] [2022-11-21 16:40:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:40,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:40,204 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:40,323 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-21 16:40:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:40,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 16:40:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:40,329 INFO L225 Difference]: With dead ends: 112 [2022-11-21 16:40:40,330 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 16:40:40,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:40,332 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 92 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:40,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 80 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 16:40:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-11-21 16:40:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 99 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) [2022-11-21 16:40:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-11-21 16:40:40,347 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 3 [2022-11-21 16:40:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:40,348 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-11-21 16:40:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-11-21 16:40:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:40:40,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:40,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:40,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:40:40,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112040, now seen corresponding path program 1 times [2022-11-21 16:40:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933136918] [2022-11-21 16:40:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:40,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:40,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933136918] [2022-11-21 16:40:40,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933136918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:40,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:40,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940610473] [2022-11-21 16:40:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:40,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:40:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:40:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:40:40,448 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:40,579 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2022-11-21 16:40:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:40:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 16:40:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:40,581 INFO L225 Difference]: With dead ends: 97 [2022-11-21 16:40:40,581 INFO L226 Difference]: Without dead ends: 97 [2022-11-21 16:40:40,581 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 [2022-11-21 16:40:40,582 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 150 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:40,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 54 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-21 16:40:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2022-11-21 16:40:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.6206896551724137) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2022-11-21 16:40:40,590 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 9 [2022-11-21 16:40:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:40,591 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2022-11-21 16:40:40,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2022-11-21 16:40:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:40:40,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:40,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:40:40,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112041, now seen corresponding path program 1 times [2022-11-21 16:40:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675840345] [2022-11-21 16:40:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:40,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:40,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:40,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675840345] [2022-11-21 16:40:40,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675840345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:40,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:40,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:40,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607403617] [2022-11-21 16:40:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:40:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:40:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:40:40,807 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:40,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:40,991 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2022-11-21 16:40:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:40:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 16:40:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:40,995 INFO L225 Difference]: With dead ends: 113 [2022-11-21 16:40:40,995 INFO L226 Difference]: Without dead ends: 113 [2022-11-21 16:40:40,999 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 [2022-11-21 16:40:41,006 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:41,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 101 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-21 16:40:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2022-11-21 16:40:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 96 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) [2022-11-21 16:40:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2022-11-21 16:40:41,029 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 9 [2022-11-21 16:40:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:41,029 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2022-11-21 16:40:41,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:41,030 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2022-11-21 16:40:41,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:40:41,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:41,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:41,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:40:41,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2022-11-21 16:40:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:41,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958059115] [2022-11-21 16:40:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:41,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958059115] [2022-11-21 16:40:41,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958059115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:41,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:41,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:40:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137162659] [2022-11-21 16:40:41,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:41,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:41,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:41,368 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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) [2022-11-21 16:40:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:41,533 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-11-21 16:40:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 [2022-11-21 16:40:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:41,534 INFO L225 Difference]: With dead ends: 96 [2022-11-21 16:40:41,534 INFO L226 Difference]: Without dead ends: 96 [2022-11-21 16:40:41,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:40:41,535 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 7 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:41,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 224 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-21 16:40:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-11-21 16:40:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2022-11-21 16:40:41,541 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 12 [2022-11-21 16:40:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:41,541 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2022-11-21 16:40:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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) [2022-11-21 16:40:41,541 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2022-11-21 16:40:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:40:41,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:41,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:41,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:40:41,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2022-11-21 16:40:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:41,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771161902] [2022-11-21 16:40:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:41,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771161902] [2022-11-21 16:40:41,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771161902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:41,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:41,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:40:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833228047] [2022-11-21 16:40:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:41,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:41,674 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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) [2022-11-21 16:40:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:41,813 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2022-11-21 16:40:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 [2022-11-21 16:40:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:41,815 INFO L225 Difference]: With dead ends: 95 [2022-11-21 16:40:41,815 INFO L226 Difference]: Without dead ends: 95 [2022-11-21 16:40:41,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:40:41,817 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 8 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:41,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 229 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-21 16:40:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-21 16:40:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 94 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2022-11-21 16:40:41,834 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 12 [2022-11-21 16:40:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:41,834 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2022-11-21 16:40:41,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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) [2022-11-21 16:40:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2022-11-21 16:40:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:40:41,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:41,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:41,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:40:41,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash 683852107, now seen corresponding path program 1 times [2022-11-21 16:40:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:41,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075948468] [2022-11-21 16:40:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:42,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:42,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075948468] [2022-11-21 16:40:42,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075948468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:42,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:42,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:42,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894974332] [2022-11-21 16:40:42,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:42,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:42,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:42,211 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-21 16:40:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:42,458 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2022-11-21 16:40:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:40:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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 [2022-11-21 16:40:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:42,460 INFO L225 Difference]: With dead ends: 178 [2022-11-21 16:40:42,460 INFO L226 Difference]: Without dead ends: 178 [2022-11-21 16:40:42,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:42,461 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 365 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:42,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 286 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-21 16:40:42,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 98. [2022-11-21 16:40:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5) internal successors, (105), 97 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2022-11-21 16:40:42,465 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 13 [2022-11-21 16:40:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:42,466 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2022-11-21 16:40:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2022-11-21 16:40:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2022-11-21 16:40:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 16:40:42,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:42,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:42,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:40:42,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash -275416990, now seen corresponding path program 1 times [2022-11-21 16:40:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:42,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376975287] [2022-11-21 16:40:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:42,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:42,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376975287] [2022-11-21 16:40:42,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376975287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:42,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:42,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309543941] [2022-11-21 16:40:42,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:42,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:42,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:42,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:42,765 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:43,089 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2022-11-21 16:40:43,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:40:43,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 16:40:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:43,090 INFO L225 Difference]: With dead ends: 140 [2022-11-21 16:40:43,091 INFO L226 Difference]: Without dead ends: 140 [2022-11-21 16:40:43,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:43,092 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 332 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:43,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 210 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:43,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-21 16:40:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2022-11-21 16:40:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5) internal successors, (108), 99 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) [2022-11-21 16:40:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2022-11-21 16:40:43,096 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 14 [2022-11-21 16:40:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:43,096 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2022-11-21 16:40:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2022-11-21 16:40:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 16:40:43,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:43,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:43,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:40:43,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash -275416989, now seen corresponding path program 1 times [2022-11-21 16:40:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:43,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391331326] [2022-11-21 16:40:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:43,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391331326] [2022-11-21 16:40:43,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391331326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:43,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:43,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116992181] [2022-11-21 16:40:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:43,509 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:43,870 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2022-11-21 16:40:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:40:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 16:40:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:43,872 INFO L225 Difference]: With dead ends: 172 [2022-11-21 16:40:43,872 INFO L226 Difference]: Without dead ends: 172 [2022-11-21 16:40:43,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:40:43,873 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 190 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 270 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-21 16:40:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 112. [2022-11-21 16:40:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.5) internal successors, (126), 111 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2022-11-21 16:40:43,877 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 14 [2022-11-21 16:40:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:43,877 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2022-11-21 16:40:43,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2022-11-21 16:40:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 16:40:43,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:43,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:40:43,879 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2022-11-21 16:40:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765352048] [2022-11-21 16:40:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765352048] [2022-11-21 16:40:44,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765352048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:44,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:44,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134668332] [2022-11-21 16:40:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:44,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:44,116 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 9 states, 8 states have (on average 2.0) 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) [2022-11-21 16:40:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:44,485 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2022-11-21 16:40:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:40:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) 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 [2022-11-21 16:40:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:44,487 INFO L225 Difference]: With dead ends: 120 [2022-11-21 16:40:44,487 INFO L226 Difference]: Without dead ends: 120 [2022-11-21 16:40:44,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:40:44,488 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 173 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:44,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 191 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-21 16:40:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2022-11-21 16:40:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 110 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) [2022-11-21 16:40:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2022-11-21 16:40:44,494 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 16 [2022-11-21 16:40:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:44,494 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2022-11-21 16:40:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) 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) [2022-11-21 16:40:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2022-11-21 16:40:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 16:40:44,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:44,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:40:44,496 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2022-11-21 16:40:44,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:44,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402386855] [2022-11-21 16:40:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:44,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402386855] [2022-11-21 16:40:44,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402386855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:44,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:44,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:40:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886679204] [2022-11-21 16:40:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:44,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:40:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:40:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:40:44,888 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2022-11-21 16:40:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:45,430 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2022-11-21 16:40:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:40:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 [2022-11-21 16:40:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:45,432 INFO L225 Difference]: With dead ends: 115 [2022-11-21 16:40:45,432 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 16:40:45,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:40:45,433 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 163 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:45,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 240 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:40:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 16:40:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-11-21 16:40:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 98 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2022-11-21 16:40:45,436 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 16 [2022-11-21 16:40:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:45,436 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2022-11-21 16:40:45,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2022-11-21 16:40:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2022-11-21 16:40:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:40:45,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:45,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:40:45,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1559926215, now seen corresponding path program 1 times [2022-11-21 16:40:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710595547] [2022-11-21 16:40:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:45,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:45,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710595547] [2022-11-21 16:40:45,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710595547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:45,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:45,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:45,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640494216] [2022-11-21 16:40:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:45,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:45,833 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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) [2022-11-21 16:40:46,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:46,195 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2022-11-21 16:40:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:40:46,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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 [2022-11-21 16:40:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:46,196 INFO L225 Difference]: With dead ends: 147 [2022-11-21 16:40:46,196 INFO L226 Difference]: Without dead ends: 147 [2022-11-21 16:40:46,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:40:46,197 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 345 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:46,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 319 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-21 16:40:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 99. [2022-11-21 16:40:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.435897435897436) internal successors, (112), 98 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) [2022-11-21 16:40:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-11-21 16:40:46,201 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 17 [2022-11-21 16:40:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:46,201 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-11-21 16:40:46,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 9 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) [2022-11-21 16:40:46,201 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-11-21 16:40:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:40:46,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:46,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:46,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:40:46,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1559926214, now seen corresponding path program 1 times [2022-11-21 16:40:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040935733] [2022-11-21 16:40:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:46,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040935733] [2022-11-21 16:40:46,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040935733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:46,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:46,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338398717] [2022-11-21 16:40:46,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:46,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:46,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:46,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:46,636 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2022-11-21 16:40:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:46,977 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2022-11-21 16:40:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:40:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 [2022-11-21 16:40:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:46,978 INFO L225 Difference]: With dead ends: 157 [2022-11-21 16:40:46,978 INFO L226 Difference]: Without dead ends: 157 [2022-11-21 16:40:46,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:46,979 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 189 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:46,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 240 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-21 16:40:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 99. [2022-11-21 16:40:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 98 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) [2022-11-21 16:40:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2022-11-21 16:40:46,982 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2022-11-21 16:40:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:46,983 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2022-11-21 16:40:46,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2022-11-21 16:40:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2022-11-21 16:40:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:40:46,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:46,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:40:46,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1113087206, now seen corresponding path program 1 times [2022-11-21 16:40:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:46,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451651488] [2022-11-21 16:40:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:47,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:47,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451651488] [2022-11-21 16:40:47,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451651488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:47,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:47,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103729713] [2022-11-21 16:40:47,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:47,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:47,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:47,196 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-21 16:40:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:47,453 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2022-11-21 16:40:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:40:47,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 [2022-11-21 16:40:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:47,456 INFO L225 Difference]: With dead ends: 138 [2022-11-21 16:40:47,456 INFO L226 Difference]: Without dead ends: 138 [2022-11-21 16:40:47,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:47,456 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 305 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:47,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 207 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-21 16:40:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2022-11-21 16:40:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 115 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2022-11-21 16:40:47,460 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 18 [2022-11-21 16:40:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:47,460 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2022-11-21 16:40:47,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-21 16:40:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2022-11-21 16:40:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:40:47,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:47,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:40:47,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1113087205, now seen corresponding path program 1 times [2022-11-21 16:40:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483556423] [2022-11-21 16:40:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:47,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483556423] [2022-11-21 16:40:47,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483556423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:47,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:47,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133392636] [2022-11-21 16:40:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:47,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:47,866 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-21 16:40:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:48,198 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2022-11-21 16:40:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:40:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 [2022-11-21 16:40:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:48,200 INFO L225 Difference]: With dead ends: 159 [2022-11-21 16:40:48,200 INFO L226 Difference]: Without dead ends: 159 [2022-11-21 16:40:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:40:48,201 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 149 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:48,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 229 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-21 16:40:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 121. [2022-11-21 16:40:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 100 states have (on average 1.47) internal successors, (147), 120 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2022-11-21 16:40:48,204 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 18 [2022-11-21 16:40:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:48,204 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2022-11-21 16:40:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2022-11-21 16:40:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2022-11-21 16:40:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:40:48,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:48,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:48,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:40:48,206 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1461687964, now seen corresponding path program 1 times [2022-11-21 16:40:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:48,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635082372] [2022-11-21 16:40:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:48,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:48,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635082372] [2022-11-21 16:40:48,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635082372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:48,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:48,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:40:48,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580497871] [2022-11-21 16:40:48,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:40:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:40:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:48,472 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:48,765 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2022-11-21 16:40:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:40:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-21 16:40:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:48,767 INFO L225 Difference]: With dead ends: 155 [2022-11-21 16:40:48,767 INFO L226 Difference]: Without dead ends: 155 [2022-11-21 16:40:48,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:40:48,768 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 141 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:48,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 335 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-21 16:40:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2022-11-21 16:40:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 121 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2022-11-21 16:40:48,772 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 21 [2022-11-21 16:40:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:48,772 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2022-11-21 16:40:48,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2022-11-21 16:40:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:40:48,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:48,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:40:48,774 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1905376220, now seen corresponding path program 1 times [2022-11-21 16:40:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749193960] [2022-11-21 16:40:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:48,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749193960] [2022-11-21 16:40:48,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749193960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:48,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:48,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702928205] [2022-11-21 16:40:48,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:48,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:48,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:48,812 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:48,820 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2022-11-21 16:40:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-21 16:40:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:48,822 INFO L225 Difference]: With dead ends: 125 [2022-11-21 16:40:48,822 INFO L226 Difference]: Without dead ends: 125 [2022-11-21 16:40:48,822 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 [2022-11-21 16:40:48,823 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:48,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:40:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-21 16:40:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-21 16:40:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.4519230769230769) internal successors, (151), 124 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2022-11-21 16:40:48,828 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 21 [2022-11-21 16:40:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2022-11-21 16:40:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2022-11-21 16:40:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:40:48,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:48,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:48,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:40:48,831 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2137291894, now seen corresponding path program 1 times [2022-11-21 16:40:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:48,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640635788] [2022-11-21 16:40:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640635788] [2022-11-21 16:40:48,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640635788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:48,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:48,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612283104] [2022-11-21 16:40:48,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:40:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:40:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:40:48,963 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:49,070 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2022-11-21 16:40:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:49,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-11-21 16:40:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:49,072 INFO L225 Difference]: With dead ends: 124 [2022-11-21 16:40:49,072 INFO L226 Difference]: Without dead ends: 124 [2022-11-21 16:40:49,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:40:49,074 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 192 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:49,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 99 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-21 16:40:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2022-11-21 16:40:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.4466019417475728) internal successors, (149), 122 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2022-11-21 16:40:49,077 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 21 [2022-11-21 16:40:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2022-11-21 16:40:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2022-11-21 16:40:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:40:49,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:49,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:49,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:40:49,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1062832435, now seen corresponding path program 1 times [2022-11-21 16:40:49,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658975340] [2022-11-21 16:40:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:49,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:49,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658975340] [2022-11-21 16:40:49,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658975340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:49,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:49,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:40:49,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416932231] [2022-11-21 16:40:49,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:49,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:40:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:40:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:40:49,156 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:49,281 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2022-11-21 16:40:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:40:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-21 16:40:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:49,282 INFO L225 Difference]: With dead ends: 122 [2022-11-21 16:40:49,282 INFO L226 Difference]: Without dead ends: 122 [2022-11-21 16:40:49,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:40:49,283 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 29 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:49,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 164 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-21 16:40:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-21 16:40:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.4174757281553398) internal successors, (146), 121 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2022-11-21 16:40:49,286 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 22 [2022-11-21 16:40:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:49,287 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2022-11-21 16:40:49,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2022-11-21 16:40:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:40:49,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:49,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:49,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:40:49,288 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1062832434, now seen corresponding path program 1 times [2022-11-21 16:40:49,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853701362] [2022-11-21 16:40:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:49,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:49,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853701362] [2022-11-21 16:40:49,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853701362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:49,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:49,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140264572] [2022-11-21 16:40:49,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:49,751 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:50,154 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2022-11-21 16:40:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:40:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-21 16:40:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:50,156 INFO L225 Difference]: With dead ends: 153 [2022-11-21 16:40:50,156 INFO L226 Difference]: Without dead ends: 153 [2022-11-21 16:40:50,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:40:50,156 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 165 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:50,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 287 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:40:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-21 16:40:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 122. [2022-11-21 16:40:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 121 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2022-11-21 16:40:50,160 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 22 [2022-11-21 16:40:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:50,160 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-21 16:40:50,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2022-11-21 16:40:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:40:50,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:50,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:50,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:40:50,161 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash 227835007, now seen corresponding path program 1 times [2022-11-21 16:40:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:50,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073502562] [2022-11-21 16:40:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:50,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073502562] [2022-11-21 16:40:50,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073502562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:50,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595894412] [2022-11-21 16:40:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:50,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:50,491 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:50,761 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2022-11-21 16:40:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:40:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-21 16:40:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:50,763 INFO L225 Difference]: With dead ends: 135 [2022-11-21 16:40:50,763 INFO L226 Difference]: Without dead ends: 131 [2022-11-21 16:40:50,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:50,764 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 50 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:50,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 327 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-21 16:40:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2022-11-21 16:40:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 119 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2022-11-21 16:40:50,767 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 23 [2022-11-21 16:40:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:50,767 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2022-11-21 16:40:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2022-11-21 16:40:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:40:50,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:50,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:40:50,768 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash 229252065, now seen corresponding path program 1 times [2022-11-21 16:40:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:50,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512271824] [2022-11-21 16:40:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:51,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:51,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512271824] [2022-11-21 16:40:51,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512271824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:51,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:51,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:40:51,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591562449] [2022-11-21 16:40:51,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:51,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:40:51,037 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:51,254 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2022-11-21 16:40:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:40:51,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-21 16:40:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:51,255 INFO L225 Difference]: With dead ends: 151 [2022-11-21 16:40:51,255 INFO L226 Difference]: Without dead ends: 151 [2022-11-21 16:40:51,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:40:51,256 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 265 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:51,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 265 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-21 16:40:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2022-11-21 16:40:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 120 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2022-11-21 16:40:51,259 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 23 [2022-11-21 16:40:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:51,259 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2022-11-21 16:40:51,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2022-11-21 16:40:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:40:51,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:51,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:51,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:40:51,260 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash 779247630, now seen corresponding path program 1 times [2022-11-21 16:40:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033748960] [2022-11-21 16:40:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:51,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:51,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033748960] [2022-11-21 16:40:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033748960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:51,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:40:51,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925717890] [2022-11-21 16:40:51,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:40:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:40:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:40:51,325 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:51,502 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2022-11-21 16:40:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-21 16:40:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:51,504 INFO L225 Difference]: With dead ends: 124 [2022-11-21 16:40:51,504 INFO L226 Difference]: Without dead ends: 124 [2022-11-21 16:40:51,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:40:51,505 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 76 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:51,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 159 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:40:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-21 16:40:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2022-11-21 16:40:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 121 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2022-11-21 16:40:51,507 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 24 [2022-11-21 16:40:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:51,508 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2022-11-21 16:40:51,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2022-11-21 16:40:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:40:51,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:51,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:51,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:40:51,508 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash 779247631, now seen corresponding path program 1 times [2022-11-21 16:40:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:51,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107604366] [2022-11-21 16:40:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:52,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:52,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107604366] [2022-11-21 16:40:52,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107604366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:52,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549252338] [2022-11-21 16:40:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:52,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:52,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:40:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:40:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:52,333 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 15 [2022-11-21 16:40:52,338 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 16 [2022-11-21 16:40:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:52,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:40:52,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549252338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:52,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:40:52,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-21 16:40:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765416486] [2022-11-21 16:40:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:40:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:40:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:40:52,384 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:52,616 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2022-11-21 16:40:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:40:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-21 16:40:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:52,617 INFO L225 Difference]: With dead ends: 122 [2022-11-21 16:40:52,617 INFO L226 Difference]: Without dead ends: 122 [2022-11-21 16:40:52,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:52,618 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 61 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:52,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 173 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-21 16:40:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2022-11-21 16:40:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.3592233009708738) internal successors, (140), 120 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2022-11-21 16:40:52,621 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 24 [2022-11-21 16:40:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:52,621 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2022-11-21 16:40:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2022-11-21 16:40:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:40:52,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:52,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:52,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:52,828 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:52,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1267909458, now seen corresponding path program 1 times [2022-11-21 16:40:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:52,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684842112] [2022-11-21 16:40:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:53,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:53,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684842112] [2022-11-21 16:40:53,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684842112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:53,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:53,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:40:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649371080] [2022-11-21 16:40:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:40:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:40:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:40:53,240 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:53,621 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2022-11-21 16:40:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:40:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-21 16:40:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:53,622 INFO L225 Difference]: With dead ends: 137 [2022-11-21 16:40:53,622 INFO L226 Difference]: Without dead ends: 133 [2022-11-21 16:40:53,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:53,623 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 171 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:53,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 456 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-21 16:40:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2022-11-21 16:40:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.3495145631067962) internal successors, (139), 120 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2022-11-21 16:40:53,626 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 25 [2022-11-21 16:40:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:53,627 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2022-11-21 16:40:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2022-11-21 16:40:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:40:53,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:53,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:40:53,628 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -342052636, now seen corresponding path program 1 times [2022-11-21 16:40:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:53,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520300838] [2022-11-21 16:40:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:54,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:54,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520300838] [2022-11-21 16:40:54,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520300838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:54,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:54,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:40:54,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918390425] [2022-11-21 16:40:54,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:40:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:40:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:40:54,260 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:54,701 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2022-11-21 16:40:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:40:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-21 16:40:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:54,703 INFO L225 Difference]: With dead ends: 131 [2022-11-21 16:40:54,703 INFO L226 Difference]: Without dead ends: 131 [2022-11-21 16:40:54,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:40:54,704 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 143 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:54,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 425 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-21 16:40:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 120. [2022-11-21 16:40:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 119 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2022-11-21 16:40:54,707 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 25 [2022-11-21 16:40:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2022-11-21 16:40:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2022-11-21 16:40:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:40:54,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:54,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:40:54,708 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1700492295, now seen corresponding path program 1 times [2022-11-21 16:40:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163856806] [2022-11-21 16:40:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:54,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163856806] [2022-11-21 16:40:54,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163856806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:54,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:40:54,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:40:54,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951973496] [2022-11-21 16:40:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:54,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:40:54,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:40:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:40:54,758 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:54,773 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-11-21 16:40:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:40:54,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-21 16:40:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:54,776 INFO L225 Difference]: With dead ends: 190 [2022-11-21 16:40:54,776 INFO L226 Difference]: Without dead ends: 190 [2022-11-21 16:40:54,776 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 [2022-11-21 16:40:54,777 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:54,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 151 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:40:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-21 16:40:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 136. [2022-11-21 16:40:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 135 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2022-11-21 16:40:54,783 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 25 [2022-11-21 16:40:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:54,783 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2022-11-21 16:40:54,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2022-11-21 16:40:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:40:54,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:54,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:54,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:40:54,785 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1532665747, now seen corresponding path program 1 times [2022-11-21 16:40:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:54,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354163747] [2022-11-21 16:40:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354163747] [2022-11-21 16:40:55,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354163747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592297149] [2022-11-21 16:40:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:55,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:55,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:40:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:55,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:40:55,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:55,481 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 17 [2022-11-21 16:40:55,487 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 13 [2022-11-21 16:40:55,531 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 7 [2022-11-21 16:40:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:55,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:40:55,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592297149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:40:55,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:40:55,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2022-11-21 16:40:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519847643] [2022-11-21 16:40:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:40:55,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:40:55,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:55,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:40:55,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:40:55,552 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:55,891 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2022-11-21 16:40:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:40:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-21 16:40:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:55,892 INFO L225 Difference]: With dead ends: 154 [2022-11-21 16:40:55,892 INFO L226 Difference]: Without dead ends: 154 [2022-11-21 16:40:55,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:40:55,893 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 33 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:55,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 319 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:40:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-21 16:40:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2022-11-21 16:40:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 131 states have (on average 1.297709923664122) internal successors, (170), 148 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 170 transitions. [2022-11-21 16:40:55,896 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 170 transitions. Word has length 26 [2022-11-21 16:40:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:55,896 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 170 transitions. [2022-11-21 16:40:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 170 transitions. [2022-11-21 16:40:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:40:55,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:55,897 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:55,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-21 16:40:56,104 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -301886117, now seen corresponding path program 1 times [2022-11-21 16:40:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241769462] [2022-11-21 16:40:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241769462] [2022-11-21 16:40:56,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241769462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647020400] [2022-11-21 16:40:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:56,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:56,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:56,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:40:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:56,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 16:40:56,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:56,710 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:56,804 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:40:56,805 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:56,859 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:56,970 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:40:56,971 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:57,088 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:40:57,089 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:57,147 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:40:57,148 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:57,204 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:40:57,205 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:57,249 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:40:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:57,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:57,275 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_893 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-21 16:40:57,307 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_893 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-21 16:40:57,315 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_893 (Array Int Int))) (not (= (select (select (store |c_#memory_$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_893) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-21 16:40:57,326 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_890 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_890))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_893)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-21 16:40:57,334 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_890 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$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_890))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_893)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-21 16:40:57,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:57,346 INFO L350 Elim1Store]: Elim1 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 37 treesize of output 30 [2022-11-21 16:40:57,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:57,357 INFO L350 Elim1Store]: Elim1 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 141 treesize of output 128 [2022-11-21 16:40:57,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:57,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 112 treesize of output 111 [2022-11-21 16:40:57,375 INFO L350 Elim1Store]: Elim1 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 102 treesize of output 98 [2022-11-21 16:40:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-21 16:40:57,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647020400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:57,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:40:57,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 29 [2022-11-21 16:40:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458628432] [2022-11-21 16:40:57,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 16:40:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 16:40:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=486, Unknown=5, NotChecked=240, Total=812 [2022-11-21 16:40:57,680 INFO L87 Difference]: Start difference. First operand 149 states and 170 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:58,813 INFO L93 Difference]: Finished difference Result 271 states and 302 transitions. [2022-11-21 16:40:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:40:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 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 28 [2022-11-21 16:40:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:58,815 INFO L225 Difference]: With dead ends: 271 [2022-11-21 16:40:58,815 INFO L226 Difference]: Without dead ends: 271 [2022-11-21 16:40:58,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=928, Unknown=5, NotChecked=340, Total=1482 [2022-11-21 16:40:58,816 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 259 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:58,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 845 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1057 Invalid, 1 Unknown, 744 Unchecked, 0.7s Time] [2022-11-21 16:40:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-21 16:40:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 174. [2022-11-21 16:40:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 156 states have (on average 1.2692307692307692) internal successors, (198), 173 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2022-11-21 16:40:58,821 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 28 [2022-11-21 16:40:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:58,821 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2022-11-21 16:40:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2022-11-21 16:40:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:40:58,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:58,822 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:58,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-21 16:40:59,028 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:40:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash -768530862, now seen corresponding path program 1 times [2022-11-21 16:40:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:59,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386026177] [2022-11-21 16:40:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:59,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386026177] [2022-11-21 16:40:59,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386026177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557571175] [2022-11-21 16:40:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:59,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:59,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:59,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:40:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:59,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 16:40:59,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:59,755 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-21 16:40:59,756 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 18 [2022-11-21 16:40:59,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:59,828 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 16:40:59,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-21 16:40:59,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:59,906 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 16:40:59,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 35 [2022-11-21 16:40:59,963 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 16:40:59,963 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-11-21 16:40:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:59,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:00,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:00,277 INFO L350 Elim1Store]: Elim1 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 120 treesize of output 99 [2022-11-21 16:41:00,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:00,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 53 treesize of output 207 [2022-11-21 16:41:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:01,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557571175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:01,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:01,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-11-21 16:41:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076370001] [2022-11-21 16:41:01,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:41:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:41:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:41:01,461 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 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) [2022-11-21 16:41:06,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:41:11,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:41:13,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:41:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:14,765 INFO L93 Difference]: Finished difference Result 308 states and 347 transitions. [2022-11-21 16:41:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:41:14,766 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 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) Word has length 29 [2022-11-21 16:41:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:14,767 INFO L225 Difference]: With dead ends: 308 [2022-11-21 16:41:14,767 INFO L226 Difference]: Without dead ends: 308 [2022-11-21 16:41:14,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=636, Invalid=1914, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 16:41:14,768 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 974 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 124 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:14,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 565 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 870 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-11-21 16:41:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-21 16:41:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 213. [2022-11-21 16:41:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 212 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 245 transitions. [2022-11-21 16:41:14,773 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 245 transitions. Word has length 29 [2022-11-21 16:41:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:14,773 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 245 transitions. [2022-11-21 16:41:14,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 25 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) [2022-11-21 16:41:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 245 transitions. [2022-11-21 16:41:14,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:41:14,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:14,774 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:14,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:14,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:14,975 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:41:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash -768530861, now seen corresponding path program 1 times [2022-11-21 16:41:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:14,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907429291] [2022-11-21 16:41:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:14,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:15,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:15,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907429291] [2022-11-21 16:41:15,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907429291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:15,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283189674] [2022-11-21 16:41:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:15,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:15,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:15,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:15,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:41:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:15,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 16:41:15,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:15,739 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:15,823 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:15,839 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:41:15,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-21 16:41:15,884 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:15,896 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:16,023 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:41:16,023 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 37 [2022-11-21 16:41:16,034 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-21 16:41:16,160 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:41:16,160 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-21 16:41:16,167 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-21 16:41:16,182 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:41:16,183 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 29 [2022-11-21 16:41:16,257 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:41:16,257 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-11-21 16:41:16,265 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-21 16:41:16,279 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:41:16,279 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 29 [2022-11-21 16:41:16,375 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:41:16,375 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 37 [2022-11-21 16:41:16,386 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 20 [2022-11-21 16:41:16,428 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-21 16:41:16,435 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 13 [2022-11-21 16:41:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:16,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:16,704 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1122 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8))) (forall ((v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-21 16:41:16,717 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1122 (Array Int Int))) (<= 0 (+ 8 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2022-11-21 16:41:16,742 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1116))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1115) .cse0 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1115) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1116) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8)))) is different from false [2022-11-21 16:41:16,759 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int)) (v_ArrVal_1121 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1116))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ 12 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1115) .cse1 v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1121) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_1116 (Array Int Int)) (v_ArrVal_1115 (Array Int Int)) (v_ArrVal_1122 (Array Int Int))) (<= 0 (+ 8 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1115) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1116) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1122) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2022-11-21 16:41:16,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:16,783 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 39 [2022-11-21 16:41:16,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:16,793 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 31 [2022-11-21 16:41:16,798 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 46 [2022-11-21 16:41:16,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:16,809 INFO L350 Elim1Store]: Elim1 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 186 treesize of output 181 [2022-11-21 16:41:16,817 INFO L350 Elim1Store]: Elim1 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 166 treesize of output 156 [2022-11-21 16:41:16,824 INFO L350 Elim1Store]: Elim1 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 130 treesize of output 126 [2022-11-21 16:41:16,830 INFO L350 Elim1Store]: Elim1 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 126 treesize of output 114 [2022-11-21 16:41:16,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:16,951 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2022-11-21 16:41:16,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:16,960 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2022-11-21 16:41:16,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:41:16,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:41:16,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2022-11-21 16:41:16,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:41:16,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-21 16:41:16,984 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 16:41:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:17,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283189674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:17,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:17,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2022-11-21 16:41:17,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208414773] [2022-11-21 16:41:17,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:17,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 16:41:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 16:41:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=599, Unknown=11, NotChecked=212, Total=930 [2022-11-21 16:41:17,133 INFO L87 Difference]: Start difference. First operand 213 states and 245 transitions. Second operand has 31 states, 30 states have (on average 2.7) internal successors, (81), 31 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) [2022-11-21 16:41:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:26,773 INFO L93 Difference]: Finished difference Result 299 states and 330 transitions. [2022-11-21 16:41:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:41:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 31 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) Word has length 29 [2022-11-21 16:41:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:26,776 INFO L225 Difference]: With dead ends: 299 [2022-11-21 16:41:26,776 INFO L226 Difference]: Without dead ends: 299 [2022-11-21 16:41:26,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=318, Invalid=1573, Unknown=17, NotChecked=348, Total=2256 [2022-11-21 16:41:26,777 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 391 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 36 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:26,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 609 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 997 Invalid, 6 Unknown, 524 Unchecked, 1.8s Time] [2022-11-21 16:41:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-21 16:41:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 230. [2022-11-21 16:41:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 229 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 268 transitions. [2022-11-21 16:41:26,783 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 268 transitions. Word has length 29 [2022-11-21 16:41:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:26,784 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 268 transitions. [2022-11-21 16:41:26,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 31 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) [2022-11-21 16:41:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 268 transitions. [2022-11-21 16:41:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 16:41:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:26,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:26,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-21 16:41:26,996 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:41:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1199075445, now seen corresponding path program 1 times [2022-11-21 16:41:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:26,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814163957] [2022-11-21 16:41:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:26,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:27,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814163957] [2022-11-21 16:41:27,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814163957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252750606] [2022-11-21 16:41:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:27,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:27,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:27,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:27,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:41:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:27,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 16:41:27,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:27,832 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:27,846 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:27,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:27,872 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:27,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:27,888 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:27,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:27,916 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:27,935 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:28,097 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:28,107 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:28,129 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-11-21 16:41:28,377 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:41:28,378 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2022-11-21 16:41:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:28,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:28,482 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 6 [2022-11-21 16:41:29,356 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-21 16:41:29,357 INFO L350 Elim1Store]: Elim1 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 1479 treesize of output 1 [2022-11-21 16:41:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:29,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252750606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:29,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 21 [2022-11-21 16:41:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088716424] [2022-11-21 16:41:29,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:41:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:41:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:41:29,360 INFO L87 Difference]: Start difference. First operand 230 states and 268 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 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) [2022-11-21 16:41:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:31,242 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2022-11-21 16:41:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:41:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 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) Word has length 30 [2022-11-21 16:41:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:31,243 INFO L225 Difference]: With dead ends: 255 [2022-11-21 16:41:31,243 INFO L226 Difference]: Without dead ends: 255 [2022-11-21 16:41:31,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:41:31,245 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 318 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:31,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 604 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:41:31,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-21 16:41:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 216. [2022-11-21 16:41:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 200 states have (on average 1.23) internal successors, (246), 215 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2022-11-21 16:41:31,250 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 30 [2022-11-21 16:41:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:31,250 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2022-11-21 16:41:31,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 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) [2022-11-21 16:41:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2022-11-21 16:41:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 16:41:31,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:31,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:31,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:41:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:31,457 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:41:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1483366933, now seen corresponding path program 1 times [2022-11-21 16:41:31,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:31,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748781829] [2022-11-21 16:41:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:32,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:32,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748781829] [2022-11-21 16:41:32,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748781829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:32,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710896753] [2022-11-21 16:41:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:32,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:32,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:32,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:41:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 16:41:32,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:32,324 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:32,333 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:32,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,355 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,371 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:32,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,388 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:32,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,405 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:32,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,554 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:32,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:32,567 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:33,183 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:41:33,183 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24 [2022-11-21 16:41:33,437 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-21 16:41:33,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 24 [2022-11-21 16:41:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:33,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:33,536 INFO L321 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2022-11-21 16:41:33,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 23 [2022-11-21 16:41:54,542 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-21 16:41:54,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 1943069 treesize of output 1 [2022-11-21 16:41:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:54,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710896753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:54,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:41:54,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 23 [2022-11-21 16:41:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528896691] [2022-11-21 16:41:54,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:54,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:41:54,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:41:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:41:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=466, Unknown=10, NotChecked=0, Total=552 [2022-11-21 16:41:54,547 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:56,810 INFO L93 Difference]: Finished difference Result 249 states and 275 transitions. [2022-11-21 16:41:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:41:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 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 31 [2022-11-21 16:41:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:56,812 INFO L225 Difference]: With dead ends: 249 [2022-11-21 16:41:56,812 INFO L226 Difference]: Without dead ends: 249 [2022-11-21 16:41:56,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=259, Invalid=921, Unknown=10, NotChecked=0, Total=1190 [2022-11-21 16:41:56,813 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 562 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:56,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 794 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 16:41:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-21 16:41:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2022-11-21 16:41:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 216 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 248 transitions. [2022-11-21 16:41:56,818 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 248 transitions. Word has length 31 [2022-11-21 16:41:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:56,818 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 248 transitions. [2022-11-21 16:41:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 248 transitions. [2022-11-21 16:41:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 16:41:56,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:56,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:56,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 16:41:57,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:57,025 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-11-21 16:41:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1483366934, now seen corresponding path program 1 times [2022-11-21 16:41:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:41:57,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125466090] [2022-11-21 16:41:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:41:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:41:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:41:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125466090] [2022-11-21 16:41:57,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125466090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:41:57,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245550504] [2022-11-21 16:41:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:41:57,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:41:57,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:41:57,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:41:57,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e939c90a-1d09-4f1b-960f-8730c4823053/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:41:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:41:57,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-21 16:41:57,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:57,952 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:57,961 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 16:41:58,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,016 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:58,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,034 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,059 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:58,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,071 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:58,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,220 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:58,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:58,229 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-21 16:41:59,037 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:41:59,037 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2022-11-21 16:41:59,056 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:41:59,057 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2022-11-21 16:41:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:41:59,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:59,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:41:59,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 58 treesize of output 62 [2022-11-21 16:42:30,917 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-21 16:42:30,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 492145 treesize of output 1 [2022-11-21 16:42:30,952 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:42:30,952 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 6788 treesize of output 6580 [2022-11-21 16:42:30,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:42:30,981 INFO L350 Elim1Store]: Elim1 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 4264 treesize of output 4216 [2022-11-21 16:42:31,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:42:31,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 216924 treesize of output 201564