./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro --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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- 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-8393723 [2022-11-18 18:38:15,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:15,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:15,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:15,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:15,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:15,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:15,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:15,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:15,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:15,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:15,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:15,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:15,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:15,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:15,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:15,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:15,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:15,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:15,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:15,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:15,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:15,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:15,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:15,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:15,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:15,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:15,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:15,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:15,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:15,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:15,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:15,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:15,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:15,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:15,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:15,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:15,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:15,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:15,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:15,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:15,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 18:38:15,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:15,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:15,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:15,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:15,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:15,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:15,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:15,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:15,730 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:15,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:15,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:15,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:38:15,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:15,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:15,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:15,732 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:38:15,732 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:38:15,732 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:38:15,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:15,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:38:15,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:15,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:15,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:15,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:15,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:15,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:15,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:15,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:15,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:15,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:15,735 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2022-11-18 18:38:15,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:16,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:16,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:16,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:16,040 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:16,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-11-18 18:38:16,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/data/d84b84628/ffd66f1a96f8408bad4af67a59e1bf8b/FLAGae7f6d63b [2022-11-18 18:38:16,663 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:16,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2022-11-18 18:38:16,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/data/d84b84628/ffd66f1a96f8408bad4af67a59e1bf8b/FLAGae7f6d63b [2022-11-18 18:38:16,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/data/d84b84628/ffd66f1a96f8408bad4af67a59e1bf8b [2022-11-18 18:38:16,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:16,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:17,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:17,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:17,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:17,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:16" (1/1) ... [2022-11-18 18:38:17,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fc6ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17, skipping insertion in model container [2022-11-18 18:38:17,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:16" (1/1) ... [2022-11-18 18:38:17,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:17,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:17,448 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2022-11-18 18:38:17,454 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2022-11-18 18:38:17,456 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2022-11-18 18:38:17,458 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2022-11-18 18:38:17,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:17,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:17,540 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2022-11-18 18:38:17,542 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2022-11-18 18:38:17,545 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2022-11-18 18:38:17,548 WARN L234 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_2eaa8430-4889-4368-bdd2-0b8597db9baa/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2022-11-18 18:38:17,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:17,583 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:17,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17 WrapperNode [2022-11-18 18:38:17,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:17,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:17,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:17,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:17,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,660 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-11-18 18:38:17,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:17,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:17,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:17,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:17,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:17,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:17,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:17,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:17,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (1/1) ... [2022-11-18 18:38:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:17,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:17,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:38:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:38:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:38:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:38:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:38:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:38:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:17,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:17,963 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:17,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:18,446 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:18,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:18,454 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-18 18:38:18,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:18 BoogieIcfgContainer [2022-11-18 18:38:18,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:18,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:18,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:18,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:18,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:16" (1/3) ... [2022-11-18 18:38:18,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a849bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:18, skipping insertion in model container [2022-11-18 18:38:18,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:17" (2/3) ... [2022-11-18 18:38:18,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a849bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:18, skipping insertion in model container [2022-11-18 18:38:18,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:18" (3/3) ... [2022-11-18 18:38:18,473 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2022-11-18 18:38:18,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:18,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-18 18:38:18,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:18,593 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;@4d9e055c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:18,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-18 18:38:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:38:18,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:18,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:38:18,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-18 18:38:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:18,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710439577] [2022-11-18 18:38:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:18,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710439577] [2022-11-18 18:38:18,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710439577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:18,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:18,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957940164] [2022-11-18 18:38:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:18,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:18,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:18,897 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 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) [2022-11-18 18:38:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:19,123 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2022-11-18 18:38:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:19,126 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 [2022-11-18 18:38:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:19,138 INFO L225 Difference]: With dead ends: 161 [2022-11-18 18:38:19,138 INFO L226 Difference]: Without dead ends: 159 [2022-11-18 18:38:19,139 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 [2022-11-18 18:38:19,144 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:19,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 100 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-18 18:38:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2022-11-18 18:38:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 132 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2022-11-18 18:38:19,196 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 3 [2022-11-18 18:38:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:19,196 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2022-11-18 18:38:19,197 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) [2022-11-18 18:38:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2022-11-18 18:38:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 18:38:19,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:19,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 18:38:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:19,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 18:38:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:19,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164352528] [2022-11-18 18:38:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:19,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:19,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164352528] [2022-11-18 18:38:19,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164352528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:19,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:19,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403150765] [2022-11-18 18:38:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:19,342 INFO L87 Difference]: Start difference. First operand 133 states and 141 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) [2022-11-18 18:38:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:19,476 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2022-11-18 18:38:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:19,478 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 [2022-11-18 18:38:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:19,481 INFO L225 Difference]: With dead ends: 130 [2022-11-18 18:38:19,482 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 18:38:19,482 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 [2022-11-18 18:38:19,484 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:19,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 18:38:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-18 18:38:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 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) [2022-11-18 18:38:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2022-11-18 18:38:19,505 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 3 [2022-11-18 18:38:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:19,506 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2022-11-18 18:38:19,506 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) [2022-11-18 18:38:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2022-11-18 18:38:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:38:19,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:19,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:38:19,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:19,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2022-11-18 18:38:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:19,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795525593] [2022-11-18 18:38:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:19,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:19,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795525593] [2022-11-18 18:38:19,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795525593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:19,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:19,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142416398] [2022-11-18 18:38:19,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:19,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:19,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:19,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:19,631 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:19,733 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2022-11-18 18:38:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:19,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:38:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:19,735 INFO L225 Difference]: With dead ends: 127 [2022-11-18 18:38:19,735 INFO L226 Difference]: Without dead ends: 127 [2022-11-18 18:38:19,735 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 [2022-11-18 18:38:19,737 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:19,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 82 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-18 18:38:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2022-11-18 18:38:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.7733333333333334) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2022-11-18 18:38:19,745 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 6 [2022-11-18 18:38:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:19,745 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2022-11-18 18:38:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2022-11-18 18:38:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 18:38:19,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:19,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:38:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:38:19,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2022-11-18 18:38:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:19,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612806794] [2022-11-18 18:38:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:19,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:19,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612806794] [2022-11-18 18:38:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612806794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:19,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:19,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429603513] [2022-11-18 18:38:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:19,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:19,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:19,882 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:20,023 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2022-11-18 18:38:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:20,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 18:38:20,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:20,025 INFO L225 Difference]: With dead ends: 143 [2022-11-18 18:38:20,025 INFO L226 Difference]: Without dead ends: 143 [2022-11-18 18:38:20,025 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 [2022-11-18 18:38:20,034 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:20,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 91 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-18 18:38:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2022-11-18 18:38:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 129 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2022-11-18 18:38:20,047 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 6 [2022-11-18 18:38:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:20,048 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2022-11-18 18:38:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2022-11-18 18:38:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:20,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:20,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:38:20,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 171980525, now seen corresponding path program 1 times [2022-11-18 18:38:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:20,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480077763] [2022-11-18 18:38:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480077763] [2022-11-18 18:38:20,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480077763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:20,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:20,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128366502] [2022-11-18 18:38:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:20,249 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:20,474 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2022-11-18 18:38:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:38:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:20,475 INFO L225 Difference]: With dead ends: 134 [2022-11-18 18:38:20,476 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 18:38:20,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:20,480 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 162 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:20,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 74 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 18:38:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 121. [2022-11-18 18:38:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-11-18 18:38:20,495 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 11 [2022-11-18 18:38:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:20,495 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-11-18 18:38:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-11-18 18:38:20,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:20,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:20,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:20,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:38:20,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 171980526, now seen corresponding path program 1 times [2022-11-18 18:38:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:20,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277313118] [2022-11-18 18:38:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:20,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:20,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277313118] [2022-11-18 18:38:20,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277313118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:20,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:20,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072192427] [2022-11-18 18:38:20,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:20,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:20,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:20,797 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:21,016 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2022-11-18 18:38:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:38:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:21,018 INFO L225 Difference]: With dead ends: 158 [2022-11-18 18:38:21,018 INFO L226 Difference]: Without dead ends: 158 [2022-11-18 18:38:21,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:21,019 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 150 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:21,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 102 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-18 18:38:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2022-11-18 18:38:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 127 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) [2022-11-18 18:38:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2022-11-18 18:38:21,024 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2022-11-18 18:38:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:21,024 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2022-11-18 18:38:21,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,025 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2022-11-18 18:38:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:38:21,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:21,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:38:21,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2064509497, now seen corresponding path program 1 times [2022-11-18 18:38:21,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:21,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396294068] [2022-11-18 18:38:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396294068] [2022-11-18 18:38:21,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396294068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:21,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:21,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176290082] [2022-11-18 18:38:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:21,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:38:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:38:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:21,130 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:21,366 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2022-11-18 18:38:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:21,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:38:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:21,370 INFO L225 Difference]: With dead ends: 167 [2022-11-18 18:38:21,370 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 18:38:21,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:21,373 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 237 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:21,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 129 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 18:38:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2022-11-18 18:38:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 128 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) [2022-11-18 18:38:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2022-11-18 18:38:21,394 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 13 [2022-11-18 18:38:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:21,394 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2022-11-18 18:38:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2022-11-18 18:38:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:21,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:21,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:21,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:38:21,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -264176465, now seen corresponding path program 1 times [2022-11-18 18:38:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669546753] [2022-11-18 18:38:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669546753] [2022-11-18 18:38:21,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669546753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:21,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:21,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368785267] [2022-11-18 18:38:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:21,559 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:21,795 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-11-18 18:38:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:38:21,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:21,796 INFO L225 Difference]: With dead ends: 129 [2022-11-18 18:38:21,796 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 18:38:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:38:21,797 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 264 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 18:38:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2022-11-18 18:38:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 127 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) [2022-11-18 18:38:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2022-11-18 18:38:21,801 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 15 [2022-11-18 18:38:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:21,802 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2022-11-18 18:38:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2022-11-18 18:38:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:38:21,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:21,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:21,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:38:21,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:21,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -264176464, now seen corresponding path program 1 times [2022-11-18 18:38:21,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:21,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164651487] [2022-11-18 18:38:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:22,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164651487] [2022-11-18 18:38:22,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164651487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:22,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:22,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103265738] [2022-11-18 18:38:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:22,017 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:22,311 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2022-11-18 18:38:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:38:22,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 18:38:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:22,313 INFO L225 Difference]: With dead ends: 130 [2022-11-18 18:38:22,313 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 18:38:22,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:38:22,314 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 18 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:22,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 307 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 18:38:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2022-11-18 18:38:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.425531914893617) internal successors, (134), 122 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2022-11-18 18:38:22,318 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 15 [2022-11-18 18:38:22,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:22,318 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2022-11-18 18:38:22,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2022-11-18 18:38:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:38:22,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:22,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:38:22,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -125261441, now seen corresponding path program 1 times [2022-11-18 18:38:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394410725] [2022-11-18 18:38:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:22,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394410725] [2022-11-18 18:38:22,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394410725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:22,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:38:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951964040] [2022-11-18 18:38:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:22,609 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:22,884 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2022-11-18 18:38:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:38:22,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 18:38:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:22,886 INFO L225 Difference]: With dead ends: 184 [2022-11-18 18:38:22,886 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 18:38:22,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:38:22,887 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 267 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:22,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 215 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 18:38:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2022-11-18 18:38:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 129 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) [2022-11-18 18:38:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2022-11-18 18:38:22,891 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 16 [2022-11-18 18:38:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:22,891 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2022-11-18 18:38:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2022-11-18 18:38:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:38:22,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:22,892 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] [2022-11-18 18:38:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:38:22,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:22,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -926362969, now seen corresponding path program 1 times [2022-11-18 18:38:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:22,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987988696] [2022-11-18 18:38:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987988696] [2022-11-18 18:38:23,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987988696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:23,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187946040] [2022-11-18 18:38:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:23,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:23,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:23,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:23,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:38:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:23,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:38:23,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:23,491 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 [2022-11-18 18:38:23,499 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 [2022-11-18 18:38:23,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:23,572 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 [2022-11-18 18:38:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:23,598 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 [2022-11-18 18:38:23,837 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 [2022-11-18 18:38:23,845 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 [2022-11-18 18:38:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:23,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:24,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187946040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:24,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:24,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 12 [2022-11-18 18:38:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58755576] [2022-11-18 18:38:24,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:38:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:38:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:38:24,018 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:24,439 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2022-11-18 18:38:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:24,440 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2022-11-18 18:38:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:24,441 INFO L225 Difference]: With dead ends: 181 [2022-11-18 18:38:24,441 INFO L226 Difference]: Without dead ends: 181 [2022-11-18 18:38:24,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:38:24,442 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 328 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:24,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 260 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:38:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-18 18:38:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2022-11-18 18:38:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2022-11-18 18:38:24,447 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 23 [2022-11-18 18:38:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:24,448 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2022-11-18 18:38:24,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2022-11-18 18:38:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:38:24,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:24,449 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] [2022-11-18 18:38:24,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:24,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:38:24,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash -968381222, now seen corresponding path program 1 times [2022-11-18 18:38:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:24,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21350343] [2022-11-18 18:38:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:24,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21350343] [2022-11-18 18:38:24,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21350343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:24,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:24,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664473365] [2022-11-18 18:38:24,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:24,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:38:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:38:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:24,815 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2022-11-18 18:38:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:24,972 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2022-11-18 18:38:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 [2022-11-18 18:38:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:24,973 INFO L225 Difference]: With dead ends: 141 [2022-11-18 18:38:24,973 INFO L226 Difference]: Without dead ends: 141 [2022-11-18 18:38:24,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:24,974 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 10 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:24,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 288 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-18 18:38:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2022-11-18 18:38:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 135 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) [2022-11-18 18:38:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2022-11-18 18:38:24,978 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 23 [2022-11-18 18:38:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:24,978 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2022-11-18 18:38:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2022-11-18 18:38:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2022-11-18 18:38:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:38:24,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:24,979 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] [2022-11-18 18:38:24,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:38:24,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136957, now seen corresponding path program 1 times [2022-11-18 18:38:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:24,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109132051] [2022-11-18 18:38:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:24,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:25,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109132051] [2022-11-18 18:38:25,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109132051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:25,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:25,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586098181] [2022-11-18 18:38:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:25,182 INFO L87 Difference]: Start difference. First operand 136 states and 147 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) [2022-11-18 18:38:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:25,393 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2022-11-18 18:38:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:25,394 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 [2022-11-18 18:38:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:25,395 INFO L225 Difference]: With dead ends: 136 [2022-11-18 18:38:25,395 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 18:38:25,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:38:25,396 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 41 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:25,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 261 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 18:38:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-11-18 18:38:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 134 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) [2022-11-18 18:38:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2022-11-18 18:38:25,400 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 24 [2022-11-18 18:38:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:25,401 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2022-11-18 18:38:25,401 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) [2022-11-18 18:38:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2022-11-18 18:38:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:38:25,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:25,402 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] [2022-11-18 18:38:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:38:25,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136958, now seen corresponding path program 1 times [2022-11-18 18:38:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:25,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935138503] [2022-11-18 18:38:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935138503] [2022-11-18 18:38:25,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935138503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:25,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:25,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627390829] [2022-11-18 18:38:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:25,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:25,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:25,724 INFO L87 Difference]: Start difference. First operand 135 states and 146 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) [2022-11-18 18:38:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:25,948 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2022-11-18 18:38:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:25,949 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 [2022-11-18 18:38:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:25,949 INFO L225 Difference]: With dead ends: 133 [2022-11-18 18:38:25,949 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 18:38:25,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:25,950 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 315 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 18:38:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2022-11-18 18:38:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2022-11-18 18:38:25,955 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 24 [2022-11-18 18:38:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:25,956 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2022-11-18 18:38:25,956 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) [2022-11-18 18:38:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2022-11-18 18:38:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 18:38:25,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:25,963 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] [2022-11-18 18:38:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:38:25,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash 59031534, now seen corresponding path program 1 times [2022-11-18 18:38:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103480944] [2022-11-18 18:38:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103480944] [2022-11-18 18:38:26,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103480944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498625078] [2022-11-18 18:38:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:26,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:26,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:26,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:26,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:38:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:26,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 18:38:26,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:26,920 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 [2022-11-18 18:38:26,946 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 13 treesize of output 9 [2022-11-18 18:38:27,081 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:38:27,081 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 [2022-11-18 18:38:27,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:27,140 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 [2022-11-18 18:38:27,150 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 [2022-11-18 18:38:27,206 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 16 treesize of output 8 [2022-11-18 18:38:27,264 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 16 treesize of output 18 [2022-11-18 18:38:27,313 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 16 treesize of output 18 [2022-11-18 18:38:27,362 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 [2022-11-18 18:38:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:27,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:27,507 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2022-11-18 18:38:27,515 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-18 18:38:27,678 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (|v_ULTIMATE.start_main_~end~0#1.offset_56| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_6| Int) (v_ArrVal_533 (Array Int Int))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_56| v_ArrVal_528)) |v_ULTIMATE.start_main_#t~malloc4#1.base_6| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_56| |c_ULTIMATE.start_main_~list~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_6|) 0)))) is different from false [2022-11-18 18:38:27,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:38:27,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:27,697 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 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-18 18:38:27,706 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 36 treesize of output 24 [2022-11-18 18:38:27,709 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 7 treesize of output 3 [2022-11-18 18:38:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:27,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498625078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:27,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:27,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 32 [2022-11-18 18:38:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474472991] [2022-11-18 18:38:27,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:38:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:38:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=665, Unknown=13, NotChecked=168, Total=992 [2022-11-18 18:38:27,735 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:28,733 INFO L93 Difference]: Finished difference Result 294 states and 316 transitions. [2022-11-18 18:38:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:38:28,734 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 18:38:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:28,735 INFO L225 Difference]: With dead ends: 294 [2022-11-18 18:38:28,735 INFO L226 Difference]: Without dead ends: 294 [2022-11-18 18:38:28,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=304, Invalid=1177, Unknown=13, NotChecked=228, Total=1722 [2022-11-18 18:38:28,737 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 528 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 801 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:28,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 623 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 786 Invalid, 0 Unknown, 801 Unchecked, 0.6s Time] [2022-11-18 18:38:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-18 18:38:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 141. [2022-11-18 18:38:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 140 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2022-11-18 18:38:28,743 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 26 [2022-11-18 18:38:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:28,743 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2022-11-18 18:38:28,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2022-11-18 18:38:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:38:28,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:28,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:28,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:38:28,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:38:28,951 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 500584872, now seen corresponding path program 1 times [2022-11-18 18:38:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:28,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363115417] [2022-11-18 18:38:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:28,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:29,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363115417] [2022-11-18 18:38:29,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363115417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:29,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:29,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216801944] [2022-11-18 18:38:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:29,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:29,015 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:29,054 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2022-11-18 18:38:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 [2022-11-18 18:38:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:29,056 INFO L225 Difference]: With dead ends: 142 [2022-11-18 18:38:29,056 INFO L226 Difference]: Without dead ends: 142 [2022-11-18 18:38:29,056 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 [2022-11-18 18:38:29,057 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:29,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-18 18:38:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-18 18:38:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 141 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2022-11-18 18:38:29,062 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 29 [2022-11-18 18:38:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:29,062 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-11-18 18:38:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2022-11-18 18:38:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 18:38:29,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:29,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:29,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:38:29,065 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1324652277, now seen corresponding path program 1 times [2022-11-18 18:38:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:29,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043996607] [2022-11-18 18:38:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:29,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:29,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043996607] [2022-11-18 18:38:29,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043996607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:29,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:29,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:29,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187064604] [2022-11-18 18:38:29,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:29,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:29,237 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:29,327 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2022-11-18 18:38:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:29,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 [2022-11-18 18:38:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:29,329 INFO L225 Difference]: With dead ends: 150 [2022-11-18 18:38:29,329 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 18:38:29,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:29,330 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:29,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 18:38:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2022-11-18 18:38:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 121 states have (on average 1.2892561983471074) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2022-11-18 18:38:29,335 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 31 [2022-11-18 18:38:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:29,336 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2022-11-18 18:38:29,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2022-11-18 18:38:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:38:29,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:29,337 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, 1, 1, 1] [2022-11-18 18:38:29,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:38:29,338 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 797716084, now seen corresponding path program 1 times [2022-11-18 18:38:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:29,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020518295] [2022-11-18 18:38:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020518295] [2022-11-18 18:38:29,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020518295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009239922] [2022-11-18 18:38:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:29,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:29,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:38:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:29,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:38:29,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:29,832 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 [2022-11-18 18:38:29,838 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 [2022-11-18 18:38:29,870 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:38:29,880 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 [2022-11-18 18:38:30,024 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 [2022-11-18 18:38:30,032 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 [2022-11-18 18:38:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:30,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:30,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009239922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:30,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:30,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2022-11-18 18:38:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240818136] [2022-11-18 18:38:30,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:38:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:38:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:38:30,268 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:30,931 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2022-11-18 18:38:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:38:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 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 32 [2022-11-18 18:38:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:30,932 INFO L225 Difference]: With dead ends: 199 [2022-11-18 18:38:30,932 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 18:38:30,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:30,933 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 267 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:30,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 361 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:38:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 18:38:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 156. [2022-11-18 18:38:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2803030303030303) internal successors, (169), 155 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2022-11-18 18:38:30,938 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 32 [2022-11-18 18:38:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:30,938 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2022-11-18 18:38:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2022-11-18 18:38:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:38:30,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:30,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:30,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:31,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1040605566, now seen corresponding path program 1 times [2022-11-18 18:38:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:31,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008149370] [2022-11-18 18:38:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:38:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008149370] [2022-11-18 18:38:31,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008149370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:31,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:31,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:31,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377203452] [2022-11-18 18:38:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:31,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:31,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:31,186 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:31,218 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-11-18 18:38:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-11-18 18:38:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:31,219 INFO L225 Difference]: With dead ends: 155 [2022-11-18 18:38:31,219 INFO L226 Difference]: Without dead ends: 155 [2022-11-18 18:38:31,220 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 [2022-11-18 18:38:31,221 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:31,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-18 18:38:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-11-18 18:38:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 154 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2022-11-18 18:38:31,225 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 33 [2022-11-18 18:38:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:31,226 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2022-11-18 18:38:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2022-11-18 18:38:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:38:31,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:31,227 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, 1, 1, 1] [2022-11-18 18:38:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:38:31,228 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash 248148312, now seen corresponding path program 1 times [2022-11-18 18:38:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:31,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341048505] [2022-11-18 18:38:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:31,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:31,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:31,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341048505] [2022-11-18 18:38:31,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341048505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:31,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019125973] [2022-11-18 18:38:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:31,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:31,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:31,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:38:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:31,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:38:31,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:31,810 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 [2022-11-18 18:38:31,915 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:38:31,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:38:31,976 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 [2022-11-18 18:38:32,141 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:38:32,141 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 [2022-11-18 18:38:32,197 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:38:32,197 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 28 treesize of output 29 [2022-11-18 18:38:32,366 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 [2022-11-18 18:38:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:32,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:32,500 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_787 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_787) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) is different from false [2022-11-18 18:38:32,592 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_787 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_787) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) is different from false [2022-11-18 18:38:32,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:32,607 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 20 treesize of output 21 [2022-11-18 18:38:32,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:32,619 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 34 treesize of output 37 [2022-11-18 18:38:32,645 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 7 treesize of output 5 [2022-11-18 18:38:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:36,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019125973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:36,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:36,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2022-11-18 18:38:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822546066] [2022-11-18 18:38:36,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 18:38:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 18:38:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=583, Unknown=7, NotChecked=102, Total=812 [2022-11-18 18:38:36,955 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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) [2022-11-18 18:38:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:37,779 INFO L93 Difference]: Finished difference Result 225 states and 242 transitions. [2022-11-18 18:38:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:38:37,780 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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 33 [2022-11-18 18:38:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:37,781 INFO L225 Difference]: With dead ends: 225 [2022-11-18 18:38:37,781 INFO L226 Difference]: Without dead ends: 225 [2022-11-18 18:38:37,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=8, NotChecked=126, Total=1190 [2022-11-18 18:38:37,783 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 436 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:37,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 555 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 689 Invalid, 0 Unknown, 700 Unchecked, 0.5s Time] [2022-11-18 18:38:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-18 18:38:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 163. [2022-11-18 18:38:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.2642857142857142) internal successors, (177), 162 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2022-11-18 18:38:37,787 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 33 [2022-11-18 18:38:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:37,788 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2022-11-18 18:38:37,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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) [2022-11-18 18:38:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2022-11-18 18:38:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:38:37,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:37,789 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, 1, 1, 1] [2022-11-18 18:38:37,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:37,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:37,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 248148313, now seen corresponding path program 1 times [2022-11-18 18:38:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:37,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196770856] [2022-11-18 18:38:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196770856] [2022-11-18 18:38:38,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196770856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086063059] [2022-11-18 18:38:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:38,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:38,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:38,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:38,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:38:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:38,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:38:38,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:38,739 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 [2022-11-18 18:38:38,806 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 [2022-11-18 18:38:38,825 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:38:38,825 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 [2022-11-18 18:38:38,869 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 [2022-11-18 18:38:38,880 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 [2022-11-18 18:38:39,058 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:39,058 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 [2022-11-18 18:38:39,063 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 [2022-11-18 18:38:39,079 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:38:39,079 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 [2022-11-18 18:38:39,159 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:38:39,159 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 [2022-11-18 18:38:39,168 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 [2022-11-18 18:38:39,350 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 [2022-11-18 18:38:39,353 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 [2022-11-18 18:38:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:39,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:39,634 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:38:39,680 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)))) is different from false [2022-11-18 18:38:39,693 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))))) is different from false [2022-11-18 18:38:39,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:39,710 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 20 treesize of output 21 [2022-11-18 18:38:39,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:39,717 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 34 treesize of output 37 [2022-11-18 18:38:39,734 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 7 treesize of output 5 [2022-11-18 18:38:39,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:39,743 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 38 [2022-11-18 18:38:39,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:39,751 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 29 treesize of output 30 [2022-11-18 18:38:39,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:38:39,756 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 27 treesize of output 19 [2022-11-18 18:38:39,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:38:39,761 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 20 treesize of output 12 [2022-11-18 18:38:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:39,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086063059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:39,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:39,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-11-18 18:38:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126542435] [2022-11-18 18:38:39,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:38:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:38:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=720, Unknown=3, NotChecked=168, Total=992 [2022-11-18 18:38:39,921 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:46,249 INFO L93 Difference]: Finished difference Result 229 states and 247 transitions. [2022-11-18 18:38:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:38:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 18:38:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:46,250 INFO L225 Difference]: With dead ends: 229 [2022-11-18 18:38:46,250 INFO L226 Difference]: Without dead ends: 229 [2022-11-18 18:38:46,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=314, Invalid=1675, Unknown=3, NotChecked=264, Total=2256 [2022-11-18 18:38:46,252 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 355 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 572 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:46,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 728 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1040 Invalid, 0 Unknown, 572 Unchecked, 1.0s Time] [2022-11-18 18:38:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-18 18:38:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 166. [2022-11-18 18:38:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 143 states have (on average 1.2587412587412588) internal successors, (180), 165 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 180 transitions. [2022-11-18 18:38:46,256 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 180 transitions. Word has length 33 [2022-11-18 18:38:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:46,257 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 180 transitions. [2022-11-18 18:38:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 180 transitions. [2022-11-18 18:38:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:38:46,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:46,258 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, 1, 1, 1, 1] [2022-11-18 18:38:46,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:46,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:46,464 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1639111831, now seen corresponding path program 1 times [2022-11-18 18:38:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:46,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306375920] [2022-11-18 18:38:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306375920] [2022-11-18 18:38:47,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306375920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141066713] [2022-11-18 18:38:47,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:47,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:47,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:47,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:47,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:38:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:47,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:38:47,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:47,841 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 [2022-11-18 18:38:47,863 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 13 treesize of output 9 [2022-11-18 18:38:47,969 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:38:47,969 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 [2022-11-18 18:38:48,028 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 [2022-11-18 18:38:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:48,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:38:48,121 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 16 treesize of output 8 [2022-11-18 18:38:48,219 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 16 treesize of output 18 [2022-11-18 18:38:48,255 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 16 treesize of output 18 [2022-11-18 18:38:48,290 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:38:48,291 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 [2022-11-18 18:38:48,337 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 16 treesize of output 18 [2022-11-18 18:38:48,351 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 [2022-11-18 18:38:48,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2022-11-18 18:38:48,523 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 16 treesize of output 18 [2022-11-18 18:38:48,538 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 16 treesize of output 18 [2022-11-18 18:38:48,594 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 [2022-11-18 18:38:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:48,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:48,811 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1040 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_#t~malloc7#1.base|))) is different from false [2022-11-18 18:38:49,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:49,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 59 [2022-11-18 18:38:57,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:38:57,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:38:57,140 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 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-18 18:38:57,149 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 36 treesize of output 24 [2022-11-18 18:38:57,153 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 7 treesize of output 3 [2022-11-18 18:38:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:57,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141066713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:57,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:38:57,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 40 [2022-11-18 18:38:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546243609] [2022-11-18 18:38:57,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 18:38:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 18:38:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1251, Unknown=7, NotChecked=74, Total=1560 [2022-11-18 18:38:57,215 INFO L87 Difference]: Start difference. First operand 166 states and 180 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:59,379 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2022-11-18 18:38:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:38:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 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 33 [2022-11-18 18:38:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:59,381 INFO L225 Difference]: With dead ends: 317 [2022-11-18 18:38:59,381 INFO L226 Difference]: Without dead ends: 317 [2022-11-18 18:38:59,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=516, Invalid=2451, Unknown=7, NotChecked=106, Total=3080 [2022-11-18 18:38:59,383 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 375 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 573 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:59,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 733 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1072 Invalid, 0 Unknown, 573 Unchecked, 1.1s Time] [2022-11-18 18:38:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-18 18:38:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 181. [2022-11-18 18:38:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.240506329113924) internal successors, (196), 180 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2022-11-18 18:38:59,388 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 33 [2022-11-18 18:38:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:59,389 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2022-11-18 18:38:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 40 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2022-11-18 18:38:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:38:59,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:59,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:59,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:38:59,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 18:38:59,595 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:38:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 705439333, now seen corresponding path program 1 times [2022-11-18 18:38:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768618911] [2022-11-18 18:38:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:38:59,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768618911] [2022-11-18 18:38:59,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768618911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:38:59,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64762270] [2022-11-18 18:38:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:59,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:59,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:59,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:39:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:00,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:39:00,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:00,125 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:39:00,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 18 treesize of output 32 [2022-11-18 18:39:00,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 16 treesize of output 29 [2022-11-18 18:39:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:00,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:00,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64762270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:00,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:39:00,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-18 18:39:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209144627] [2022-11-18 18:39:00,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:39:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:39:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:39:00,996 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:01,523 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2022-11-18 18:39:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 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 35 [2022-11-18 18:39:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:01,525 INFO L225 Difference]: With dead ends: 191 [2022-11-18 18:39:01,525 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 18:39:01,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:39:01,525 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 56 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:01,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 542 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 382 Invalid, 0 Unknown, 95 Unchecked, 0.4s Time] [2022-11-18 18:39:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 18:39:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-18 18:39:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 143 states have (on average 1.2587412587412588) internal successors, (180), 165 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 180 transitions. [2022-11-18 18:39:01,529 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 180 transitions. Word has length 35 [2022-11-18 18:39:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:01,529 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 180 transitions. [2022-11-18 18:39:01,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 180 transitions. [2022-11-18 18:39:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:39:01,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:01,530 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:01,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:39:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:39:01,730 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:39:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1173956707, now seen corresponding path program 2 times [2022-11-18 18:39:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:01,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159281216] [2022-11-18 18:39:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:03,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159281216] [2022-11-18 18:39:03,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159281216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786874398] [2022-11-18 18:39:03,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:03,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:03,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:03,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:03,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:39:03,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:03,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 18:39:03,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:03,266 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 [2022-11-18 18:39:03,300 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 13 treesize of output 9 [2022-11-18 18:39:03,399 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:39:03,399 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 [2022-11-18 18:39:03,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:03,451 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 [2022-11-18 18:39:03,467 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 [2022-11-18 18:39:03,532 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 16 treesize of output 8 [2022-11-18 18:39:03,617 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 16 treesize of output 18 [2022-11-18 18:39:03,657 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 16 treesize of output 18 [2022-11-18 18:39:03,687 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:39:03,687 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 [2022-11-18 18:39:03,753 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 16 treesize of output 18 [2022-11-18 18:39:03,764 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 [2022-11-18 18:39:03,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2022-11-18 18:39:03,891 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 16 treesize of output 18 [2022-11-18 18:39:03,920 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 16 treesize of output 18 [2022-11-18 18:39:03,983 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 [2022-11-18 18:39:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:03,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:04,129 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1257 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1257) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-18 18:39:04,582 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:39:04,582 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 13 treesize of output 12 [2022-11-18 18:39:04,872 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_81| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_17| Int) (v_ArrVal_1257 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc4#1.base_15| Int) (v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1247 Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_17|) 0)) (= |v_ULTIMATE.start_main_#t~malloc4#1.base_15| |c_ULTIMATE.start_main_~list~0#1.base|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_81| v_ArrVal_1247)) |v_ULTIMATE.start_main_#t~malloc4#1.base_17| v_ArrVal_1254) |v_ULTIMATE.start_main_#t~malloc4#1.base_15| v_ArrVal_1257) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_81| |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2022-11-18 18:39:04,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:39:04,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:39:04,895 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-18 18:39:04,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:39:04,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2022-11-18 18:39:04,910 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 7 treesize of output 3 [2022-11-18 18:39:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 18:39:04,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786874398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:04,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:39:04,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 45 [2022-11-18 18:39:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428531903] [2022-11-18 18:39:04,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 18:39:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 18:39:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1529, Unknown=15, NotChecked=166, Total=1980 [2022-11-18 18:39:04,960 INFO L87 Difference]: Start difference. First operand 166 states and 180 transitions. Second operand has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:06,808 INFO L93 Difference]: Finished difference Result 243 states and 264 transitions. [2022-11-18 18:39:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:39:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-11-18 18:39:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:06,810 INFO L225 Difference]: With dead ends: 243 [2022-11-18 18:39:06,811 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 18:39:06,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=608, Invalid=2577, Unknown=15, NotChecked=222, Total=3422 [2022-11-18 18:39:06,812 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 304 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1142 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:06,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 713 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1272 Invalid, 0 Unknown, 1142 Unchecked, 1.1s Time] [2022-11-18 18:39:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 18:39:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 176. [2022-11-18 18:39:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 153 states have (on average 1.2549019607843137) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2022-11-18 18:39:06,818 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 36 [2022-11-18 18:39:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:06,818 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2022-11-18 18:39:06,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2022-11-18 18:39:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 18:39:06,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:06,820 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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] [2022-11-18 18:39:06,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:07,027 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:39:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash 283994547, now seen corresponding path program 2 times [2022-11-18 18:39:07,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533867074] [2022-11-18 18:39:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533867074] [2022-11-18 18:39:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533867074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191724455] [2022-11-18 18:39:07,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:07,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:07,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:07,819 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:07,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:39:08,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:08,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:08,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 18:39:08,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:08,100 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 [2022-11-18 18:39:08,255 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:39:08,255 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 [2022-11-18 18:39:08,324 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 [2022-11-18 18:39:08,334 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 [2022-11-18 18:39:08,563 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 18:39:08,563 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 27 treesize of output 22 [2022-11-18 18:39:08,579 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 26 treesize of output 21 [2022-11-18 18:39:08,727 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:39:08,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2022-11-18 18:39:08,739 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 0 case distinctions, treesize of input 38 treesize of output 36 [2022-11-18 18:39:09,376 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-18 18:39:09,377 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2022-11-18 18:39:09,390 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:39:09,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-18 18:39:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:09,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:28,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:39:28,078 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 13847 treesize of output 12635 [2022-11-18 18:39:28,778 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 14739 treesize of output 14619 [2022-11-18 18:41:15,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:15,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:15,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:15,812 INFO L321 Elim1Store]: treesize reduction 344, result has 0.3 percent of original size [2022-11-18 18:41:15,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 46946 treesize of output 1 [2022-11-18 18:41:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:16,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191724455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:16,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:16,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 36 [2022-11-18 18:41:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20659441] [2022-11-18 18:41:16,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:16,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:41:16,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:41:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1131, Unknown=2, NotChecked=0, Total=1260 [2022-11-18 18:41:16,170 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:17,900 INFO L93 Difference]: Finished difference Result 234 states and 255 transitions. [2022-11-18 18:41:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:41:17,901 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 38 [2022-11-18 18:41:17,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:17,902 INFO L225 Difference]: With dead ends: 234 [2022-11-18 18:41:17,902 INFO L226 Difference]: Without dead ends: 234 [2022-11-18 18:41:17,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=287, Invalid=1967, Unknown=2, NotChecked=0, Total=2256 [2022-11-18 18:41:17,904 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 449 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 573 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:17,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 973 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1183 Invalid, 0 Unknown, 573 Unchecked, 1.1s Time] [2022-11-18 18:41:17,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-18 18:41:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 178. [2022-11-18 18:41:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.2516129032258065) internal successors, (194), 177 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2022-11-18 18:41:17,909 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 38 [2022-11-18 18:41:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:17,909 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2022-11-18 18:41:17,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2022-11-18 18:41:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 18:41:17,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:17,910 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:17,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:18,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 18:41:18,116 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:41:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 241976294, now seen corresponding path program 1 times [2022-11-18 18:41:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:18,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978711719] [2022-11-18 18:41:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978711719] [2022-11-18 18:41:19,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978711719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510285181] [2022-11-18 18:41:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:19,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:19,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:41:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:19,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 18:41:19,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:19,216 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 [2022-11-18 18:41:19,304 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:41:19,304 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 [2022-11-18 18:41:19,346 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 [2022-11-18 18:41:19,359 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 [2022-11-18 18:41:19,511 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:41:19,511 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 21 treesize of output 25 [2022-11-18 18:41:19,530 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 11 treesize of output 7 [2022-11-18 18:41:19,554 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:19,554 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 22 treesize of output 22 [2022-11-18 18:41:19,684 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:19,684 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 50 treesize of output 47 [2022-11-18 18:41:19,692 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 21 treesize of output 13 [2022-11-18 18:41:19,698 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 25 treesize of output 25 [2022-11-18 18:41:20,049 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 29 treesize of output 17 [2022-11-18 18:41:20,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2022-11-18 18:41:20,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:20,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:20,191 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 19 treesize of output 10 [2022-11-18 18:41:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:20,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:20,569 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 74 treesize of output 54 [2022-11-18 18:41:20,595 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1470 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1470) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (not (<= 0 .cse0)) (= .cse0 |c_ULTIMATE.start_main_~end~0#1.offset|)))) (or (forall ((v_ArrVal_1471 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1471) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_1470 (Array Int Int))) (not (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1470) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2022-11-18 18:41:21,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,148 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 18 treesize of output 19 [2022-11-18 18:41:21,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,158 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 30 treesize of output 33 [2022-11-18 18:41:21,173 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 [2022-11-18 18:41:21,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,179 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 19 treesize of output 20 [2022-11-18 18:41:21,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,195 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 33 treesize of output 36 [2022-11-18 18:41:21,201 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 20 treesize of output 18 [2022-11-18 18:41:21,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,217 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 18 treesize of output 19 [2022-11-18 18:41:21,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:21,229 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-18 18:41:21,242 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:41:21,242 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 40 treesize of output 1 [2022-11-18 18:41:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:21,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510285181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:21,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:21,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 39 [2022-11-18 18:41:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504538762] [2022-11-18 18:41:21,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 18:41:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 18:41:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1291, Unknown=1, NotChecked=72, Total=1482 [2022-11-18 18:41:21,441 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 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) [2022-11-18 18:41:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:23,195 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2022-11-18 18:41:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:41:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 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) Word has length 38 [2022-11-18 18:41:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:23,196 INFO L225 Difference]: With dead ends: 180 [2022-11-18 18:41:23,197 INFO L226 Difference]: Without dead ends: 180 [2022-11-18 18:41:23,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=220, Invalid=2333, Unknown=1, NotChecked=98, Total=2652 [2022-11-18 18:41:23,198 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 91 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:23,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 907 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 782 Invalid, 0 Unknown, 405 Unchecked, 0.7s Time] [2022-11-18 18:41:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-18 18:41:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2022-11-18 18:41:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 154 states have (on average 1.2467532467532467) internal successors, (192), 176 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 192 transitions. [2022-11-18 18:41:23,204 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 192 transitions. Word has length 38 [2022-11-18 18:41:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:23,204 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 192 transitions. [2022-11-18 18:41:23,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 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) [2022-11-18 18:41:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 192 transitions. [2022-11-18 18:41:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 18:41:23,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:23,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:23,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:23,412 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:41:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash 896234639, now seen corresponding path program 1 times [2022-11-18 18:41:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:23,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118948125] [2022-11-18 18:41:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:24,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118948125] [2022-11-18 18:41:24,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118948125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:24,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577495137] [2022-11-18 18:41:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:24,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:24,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:41:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:24,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:41:24,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:24,220 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 [2022-11-18 18:41:24,321 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:41:24,322 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 [2022-11-18 18:41:24,358 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 [2022-11-18 18:41:24,532 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:24,532 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 22 treesize of output 22 [2022-11-18 18:41:24,588 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:24,588 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 22 treesize of output 22 [2022-11-18 18:41:24,608 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:41:24,608 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 [2022-11-18 18:41:24,674 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 18:41:24,674 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 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-18 18:41:24,877 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:41:24,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2022-11-18 18:41:24,888 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 12 treesize of output 8 [2022-11-18 18:41:24,983 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:41:24,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 56 [2022-11-18 18:41:25,144 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 [2022-11-18 18:41:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:25,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:29,514 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2022-11-18 18:41:29,514 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 27 treesize of output 26 [2022-11-18 18:41:29,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:29,646 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:41:29,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:29,871 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 23 treesize of output 24 [2022-11-18 18:41:29,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:29,883 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 134 treesize of output 133 [2022-11-18 18:41:29,890 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 118 treesize of output 110 [2022-11-18 18:41:29,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:29,902 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 118 treesize of output 108 [2022-11-18 18:41:29,916 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:41:29,917 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 13 treesize of output 12 [2022-11-18 18:41:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:30,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577495137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:30,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:30,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 38 [2022-11-18 18:41:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414596715] [2022-11-18 18:41:30,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 18:41:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 18:41:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1280, Unknown=40, NotChecked=0, Total=1482 [2022-11-18 18:41:30,130 INFO L87 Difference]: Start difference. First operand 177 states and 192 transitions. Second operand has 39 states, 38 states have (on average 2.473684210526316) internal successors, (94), 39 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) [2022-11-18 18:41:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:31,493 INFO L93 Difference]: Finished difference Result 251 states and 273 transitions. [2022-11-18 18:41:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:41:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.473684210526316) internal successors, (94), 39 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) Word has length 40 [2022-11-18 18:41:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:31,495 INFO L225 Difference]: With dead ends: 251 [2022-11-18 18:41:31,495 INFO L226 Difference]: Without dead ends: 251 [2022-11-18 18:41:31,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=386, Invalid=2329, Unknown=41, NotChecked=0, Total=2756 [2022-11-18 18:41:31,496 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 226 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:31,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 985 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 760 Invalid, 0 Unknown, 759 Unchecked, 0.7s Time] [2022-11-18 18:41:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-18 18:41:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 190. [2022-11-18 18:41:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 167 states have (on average 1.2395209580838322) internal successors, (207), 189 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 207 transitions. [2022-11-18 18:41:31,503 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 207 transitions. Word has length 40 [2022-11-18 18:41:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:31,504 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 207 transitions. [2022-11-18 18:41:31,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.473684210526316) internal successors, (94), 39 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) [2022-11-18 18:41:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 207 transitions. [2022-11-18 18:41:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 18:41:31,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:31,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:31,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:31,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:41:31,711 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:41:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash 896234640, now seen corresponding path program 1 times [2022-11-18 18:41:31,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:31,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731456252] [2022-11-18 18:41:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:32,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:32,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731456252] [2022-11-18 18:41:32,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731456252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:32,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892926849] [2022-11-18 18:41:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:32,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:32,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:32,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:41:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:33,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 18:41:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:33,043 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 [2022-11-18 18:41:33,139 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:41:33,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:41:33,204 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 [2022-11-18 18:41:33,220 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 [2022-11-18 18:41:33,417 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:33,418 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 [2022-11-18 18:41:33,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,434 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 14 treesize of output 16 [2022-11-18 18:41:33,550 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:41:33,550 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 [2022-11-18 18:41:33,556 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 [2022-11-18 18:41:33,575 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:33,576 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 [2022-11-18 18:41:33,683 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-18 18:41:33,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:41:33,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:41:33,772 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 18:41:33,772 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 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-18 18:41:33,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:41:34,137 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:41:34,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 55 [2022-11-18 18:41:34,178 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:41:34,178 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 [2022-11-18 18:41:34,186 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 [2022-11-18 18:41:34,297 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:41:34,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2022-11-18 18:41:34,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 18:41:34,745 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:41:34,745 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 55 treesize of output 26 [2022-11-18 18:41:34,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-11-18 18:41:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:34,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:35,007 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1772 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_1772 (Array Int Int)) (v_ArrVal_1771 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:41:35,034 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1772 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_1772 (Array Int Int)) (v_ArrVal_1771 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:41:35,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:35,611 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 119 treesize of output 123 [2022-11-18 18:41:35,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:35,623 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 114 [2022-11-18 18:41:35,691 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 26 treesize of output 22 [2022-11-18 18:41:36,032 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_2 Int) (v_prenex_1 (Array Int Int)) (v_prenex_3 (Array Int Int))) (or (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_prenex_1) v_prenex_2 v_prenex_3) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)) (not (= (select |c_#valid| v_prenex_2) 0)))) (forall ((v_ArrVal_1767 (Array Int Int)) (v_arrayElimCell_168 Int) (v_ArrVal_1772 (Array Int Int))) (or (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1767) v_arrayElimCell_168 v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 1) (not (= (select |c_#valid| v_arrayElimCell_168) 0)))) (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|)) (forall ((v_arrayElimArr_15 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_15 |ULTIMATE.start_main_~end~0#1.offset|))) (or (forall ((v_ArrVal_1771 (Array Int Int))) (not (= .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_15) .cse0 v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (not (= (select |c_#valid| .cse0) 0))))))) (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (forall ((v_arrayElimArr_15 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_15 |ULTIMATE.start_main_~end~0#1.offset|))) (or (forall ((v_ArrVal_1771 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_15) .cse1 v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|)) (not (= (select |c_#valid| .cse1) 0))))) (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|))))) is different from false [2022-11-18 18:41:36,073 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|)) (forall ((v_arrayElimArr_15 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_15 |ULTIMATE.start_main_~end~0#1.offset|))) (or (forall ((v_ArrVal_1771 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_arrayElimArr_15) .cse0 v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_#t~mem5#1.base|)) (not (= (select |c_#valid| .cse0) 0))))))) (forall ((v_ArrVal_1767 (Array Int Int)) (v_arrayElimCell_168 Int) (v_ArrVal_1772 (Array Int Int))) (or (not (= (select |c_#valid| v_arrayElimCell_168) 0)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1767) v_arrayElimCell_168 v_ArrVal_1772) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 1))) (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|)) (forall ((v_arrayElimArr_15 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_15 |ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse1) 0)) (forall ((v_ArrVal_1771 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_arrayElimArr_15) .cse1 v_ArrVal_1771) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1)))))))) (forall ((v_prenex_2 Int) (v_prenex_1 (Array Int Int)) (v_prenex_3 (Array Int Int))) (or (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_prenex_1) v_prenex_2 v_prenex_3) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)) (not (= (select |c_#valid| v_prenex_2) 0))))) is different from false [2022-11-18 18:41:36,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,411 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 21 treesize of output 22 [2022-11-18 18:41:36,422 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,423 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 122 treesize of output 121 [2022-11-18 18:41:36,430 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 106 treesize of output 98 [2022-11-18 18:41:36,436 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 98 treesize of output 94 [2022-11-18 18:41:36,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,520 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 26 treesize of output 27 [2022-11-18 18:41:36,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:36,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,537 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 37 treesize of output 40 [2022-11-18 18:41:36,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,552 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 33 treesize of output 33 [2022-11-18 18:41:36,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,606 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 23 treesize of output 24 [2022-11-18 18:41:36,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:36,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,623 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 30 treesize of output 33 [2022-11-18 18:41:36,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,644 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 18 treesize of output 22 [2022-11-18 18:41:36,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,660 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 23 treesize of output 24 [2022-11-18 18:41:36,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:36,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,674 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 34 treesize of output 37 [2022-11-18 18:41:36,691 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 7 treesize of output 5 [2022-11-18 18:41:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:37,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892926849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:37,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:37,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2022-11-18 18:41:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313403625] [2022-11-18 18:41:37,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 18:41:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 18:41:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1517, Unknown=27, NotChecked=332, Total=2070 [2022-11-18 18:41:37,245 INFO L87 Difference]: Start difference. First operand 190 states and 207 transitions. Second operand has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:39,614 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2022-11-18 18:41:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:41:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 18:41:39,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:39,615 INFO L225 Difference]: With dead ends: 237 [2022-11-18 18:41:39,616 INFO L226 Difference]: Without dead ends: 237 [2022-11-18 18:41:39,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=455, Invalid=3074, Unknown=27, NotChecked=476, Total=4032 [2022-11-18 18:41:39,617 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 362 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1281 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:39,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 878 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 847 Invalid, 0 Unknown, 1281 Unchecked, 0.7s Time] [2022-11-18 18:41:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-18 18:41:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 193. [2022-11-18 18:41:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 170 states have (on average 1.2352941176470589) internal successors, (210), 192 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2022-11-18 18:41:39,622 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 40 [2022-11-18 18:41:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:39,623 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2022-11-18 18:41:39,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:41:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2022-11-18 18:41:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:41:39,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:39,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:39,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:39,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 18:41:39,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:41:39,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1010240346, now seen corresponding path program 1 times [2022-11-18 18:41:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:39,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131577244] [2022-11-18 18:41:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:41:40,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131577244] [2022-11-18 18:41:40,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131577244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873295412] [2022-11-18 18:41:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:40,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:40,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:40,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:41:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:40,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 18:41:40,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:40,733 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 [2022-11-18 18:41:40,858 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:41:40,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:41:40,937 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 [2022-11-18 18:41:41,147 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:41,147 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 [2022-11-18 18:41:41,217 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:41:41,218 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 28 treesize of output 29 [2022-11-18 18:41:41,829 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 [2022-11-18 18:41:41,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-18 18:41:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:41,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:42,456 WARN L837 $PredicateComparison]: unable to prove that (and (or (= |c_ULTIMATE.start_main_~list~0#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) (and (forall ((v_ArrVal_1876 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) (forall ((v_ArrVal_1876 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1876) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (= (select |c_#valid| .cse0) 1) (= |c_ULTIMATE.start_main_~list~0#1.base| .cse0))))) is different from false [2022-11-18 18:41:42,703 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (or (= |c_ULTIMATE.start_main_~list~0#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) (forall ((v_ArrVal_1876 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1876) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (forall ((v_ArrVal_1876 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1876) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (= (select |c_#valid| .cse1) 1) (= |c_ULTIMATE.start_main_~list~0#1.base| .cse1)))))) is different from false [2022-11-18 18:41:42,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:42,727 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 39 treesize of output 31 [2022-11-18 18:41:42,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:42,739 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 55 treesize of output 54 [2022-11-18 18:41:42,743 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 21 treesize of output 17 [2022-11-18 18:41:42,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:42,794 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 19 treesize of output 20 [2022-11-18 18:41:42,813 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:42,813 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2022-11-18 18:41:42,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 20 treesize of output 18 [2022-11-18 18:42:07,360 WARN L233 SmtUtils]: Spent 24.09s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:42:17,521 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:42:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:17,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873295412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:17,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:17,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-11-18 18:42:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202232372] [2022-11-18 18:42:17,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 18:42:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 18:42:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1203, Unknown=16, NotChecked=146, Total=1560 [2022-11-18 18:42:17,549 INFO L87 Difference]: Start difference. First operand 193 states and 210 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 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) [2022-11-18 18:42:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:26,189 INFO L93 Difference]: Finished difference Result 265 states and 286 transitions. [2022-11-18 18:42:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:42:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 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) Word has length 41 [2022-11-18 18:42:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:26,191 INFO L225 Difference]: With dead ends: 265 [2022-11-18 18:42:26,191 INFO L226 Difference]: Without dead ends: 265 [2022-11-18 18:42:26,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=1219, Invalid=4323, Unknown=16, NotChecked=294, Total=5852 [2022-11-18 18:42:26,194 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1159 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:26,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 621 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1469 Invalid, 0 Unknown, 614 Unchecked, 1.6s Time] [2022-11-18 18:42:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-18 18:42:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2022-11-18 18:42:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 179 states have (on average 1.23463687150838) internal successors, (221), 201 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 221 transitions. [2022-11-18 18:42:26,200 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 221 transitions. Word has length 41 [2022-11-18 18:42:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:26,200 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 221 transitions. [2022-11-18 18:42:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 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) [2022-11-18 18:42:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 221 transitions. [2022-11-18 18:42:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:42:26,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:26,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:26,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:26,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:42:26,410 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:42:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1010240345, now seen corresponding path program 1 times [2022-11-18 18:42:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:26,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012604109] [2022-11-18 18:42:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012604109] [2022-11-18 18:42:27,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012604109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001467492] [2022-11-18 18:42:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:27,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:27,207 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:27,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:42:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:27,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 18:42:27,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:27,456 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 [2022-11-18 18:42:27,499 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:27,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-18 18:42:27,636 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 18:42:27,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:42:27,698 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 [2022-11-18 18:42:27,912 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:27,912 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 [2022-11-18 18:42:27,970 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:27,970 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 [2022-11-18 18:42:28,162 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 [2022-11-18 18:42:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:28,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:28,469 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1981 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~null~0#1.base| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1981) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2022-11-18 18:42:28,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:28,481 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 19 treesize of output 20 [2022-11-18 18:42:28,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:28,495 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 33 treesize of output 36 [2022-11-18 18:42:28,500 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 20 treesize of output 18 [2022-11-18 18:42:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:28,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001467492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:28,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:28,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-11-18 18:42:28,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929008209] [2022-11-18 18:42:28,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:28,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:42:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:42:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1068, Unknown=14, NotChecked=66, Total=1260 [2022-11-18 18:42:28,819 INFO L87 Difference]: Start difference. First operand 202 states and 221 transitions. Second operand has 36 states, 36 states have (on average 3.0555555555555554) internal successors, (110), 36 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:31,084 INFO L93 Difference]: Finished difference Result 342 states and 372 transitions. [2022-11-18 18:42:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:42:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0555555555555554) internal successors, (110), 36 states have internal predecessors, (110), 0 states have call successors, (0), 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 41 [2022-11-18 18:42:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:31,086 INFO L225 Difference]: With dead ends: 342 [2022-11-18 18:42:31,086 INFO L226 Difference]: Without dead ends: 342 [2022-11-18 18:42:31,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=326, Invalid=2207, Unknown=21, NotChecked=98, Total=2652 [2022-11-18 18:42:31,088 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 373 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 990 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1359 Invalid, 0 Unknown, 474 Unchecked, 1.1s Time] [2022-11-18 18:42:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-18 18:42:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 202. [2022-11-18 18:42:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 179 states have (on average 1.229050279329609) internal successors, (220), 201 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2022-11-18 18:42:31,097 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 41 [2022-11-18 18:42:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:31,097 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2022-11-18 18:42:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0555555555555554) internal successors, (110), 36 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2022-11-18 18:42:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:42:31,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:31,100 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:31,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:31,307 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:42:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1610733879, now seen corresponding path program 3 times [2022-11-18 18:42:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:31,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798380757] [2022-11-18 18:42:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:31,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:31,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798380757] [2022-11-18 18:42:31,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798380757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:31,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297286853] [2022-11-18 18:42:31,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:42:31,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:31,947 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:31,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:42:32,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 18:42:32,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:32,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 18:42:32,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:32,288 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 [2022-11-18 18:42:32,406 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:32,407 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 [2022-11-18 18:42:32,452 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 [2022-11-18 18:42:32,651 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:32,651 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 22 treesize of output 22 [2022-11-18 18:42:32,702 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:32,703 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 22 treesize of output 22 [2022-11-18 18:42:32,733 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:32,734 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 [2022-11-18 18:42:32,822 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 18:42:32,823 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 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-18 18:42:33,067 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:42:33,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2022-11-18 18:42:33,073 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 12 treesize of output 8 [2022-11-18 18:42:33,220 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 18:42:33,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 56 [2022-11-18 18:42:33,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:33,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:33,389 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 25 treesize of output 16 [2022-11-18 18:42:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:33,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:35,910 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2022-11-18 18:42:35,910 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 27 treesize of output 26 [2022-11-18 18:42:36,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:36,156 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:42:36,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:36,587 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 23 treesize of output 24 [2022-11-18 18:42:36,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:36,604 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 68 treesize of output 71 [2022-11-18 18:42:36,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:36,621 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 64 treesize of output 60 [2022-11-18 18:42:36,629 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 46 treesize of output 42 [2022-11-18 18:42:36,648 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:42:36,648 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 13 treesize of output 12 [2022-11-18 18:42:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:37,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297286853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:37,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:37,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 41 [2022-11-18 18:42:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431524586] [2022-11-18 18:42:37,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 18:42:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:37,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 18:42:37,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1552, Unknown=15, NotChecked=0, Total=1722 [2022-11-18 18:42:37,274 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:39,354 INFO L93 Difference]: Finished difference Result 356 states and 389 transitions. [2022-11-18 18:42:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:42:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 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 43 [2022-11-18 18:42:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:39,356 INFO L225 Difference]: With dead ends: 356 [2022-11-18 18:42:39,357 INFO L226 Difference]: Without dead ends: 356 [2022-11-18 18:42:39,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=432, Invalid=2975, Unknown=15, NotChecked=0, Total=3422 [2022-11-18 18:42:39,359 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 516 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1136 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:39,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1158 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1191 Invalid, 0 Unknown, 1136 Unchecked, 1.1s Time] [2022-11-18 18:42:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-18 18:42:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 225. [2022-11-18 18:42:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 202 states have (on average 1.2227722772277227) internal successors, (247), 224 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 247 transitions. [2022-11-18 18:42:39,366 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 247 transitions. Word has length 43 [2022-11-18 18:42:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:39,366 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 247 transitions. [2022-11-18 18:42:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 42 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 247 transitions. [2022-11-18 18:42:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:42:39,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:39,368 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:39,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:39,576 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:42:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1610733878, now seen corresponding path program 2 times [2022-11-18 18:42:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:39,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501375904] [2022-11-18 18:42:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501375904] [2022-11-18 18:42:40,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501375904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994795121] [2022-11-18 18:42:40,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:40,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:40,739 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:40,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:42:41,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:41,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:41,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 18:42:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:41,050 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 [2022-11-18 18:42:41,198 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:42:41,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:42:41,286 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 [2022-11-18 18:42:41,300 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 [2022-11-18 18:42:41,615 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:42:41,616 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 [2022-11-18 18:42:41,625 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 [2022-11-18 18:42:41,651 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:41,651 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 [2022-11-18 18:42:41,838 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:42:41,839 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 [2022-11-18 18:42:41,845 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 [2022-11-18 18:42:41,874 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:42:41,874 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 [2022-11-18 18:42:42,051 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-18 18:42:42,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 18:42:42,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:42:42,165 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:42:42,165 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 [2022-11-18 18:42:42,174 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 [2022-11-18 18:42:42,201 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 18:42:42,201 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 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-18 18:42:42,577 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:42:42,578 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 [2022-11-18 18:42:42,589 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 [2022-11-18 18:42:42,620 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:42:42,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 55 [2022-11-18 18:42:42,829 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:42:42,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2022-11-18 18:42:42,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 18:42:43,320 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:42:43,321 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 55 treesize of output 26 [2022-11-18 18:42:43,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-11-18 18:42:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:43,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:43,819 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2279 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2279 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2280) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:42:43,862 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2279 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2279 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2280) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:42:44,106 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2279 (Array Int Int)) (v_ArrVal_2275 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2275) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2279 (Array Int Int)) (v_ArrVal_2275 (Array Int Int))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2275) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2280) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:42:44,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:44,331 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 119 treesize of output 123 [2022-11-18 18:42:44,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:44,343 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 114 [2022-11-18 18:42:44,428 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 26 treesize of output 22 [2022-11-18 18:42:45,122 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|)) (forall ((v_arrayElimArr_25 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_25 |ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (forall ((v_ArrVal_2280 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_arrayElimArr_25) .cse0 v_ArrVal_2280) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) .cse0)))))))) (forall ((v_ArrVal_2279 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc4#1.base_36| Int) (v_ArrVal_2275 (Array Int Int))) (or (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2275) |v_ULTIMATE.start_main_#t~malloc4#1.base_36| v_ArrVal_2279) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_36|) 0)))) (forall ((v_arrayElimCell_257 Int) (v_prenex_5 (Array Int Int)) (v_prenex_7 (Array Int Int))) (or (not (= (select |c_#valid| v_arrayElimCell_257) 0)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_prenex_7) v_arrayElimCell_257 v_prenex_5) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 1))) (forall ((|ULTIMATE.start_main_~end~0#1.offset| Int)) (or (forall ((v_arrayElimArr_25 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_25 |ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select |c_#valid| .cse1) 0)) (forall ((v_ArrVal_2280 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem5#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_arrayElimArr_25) .cse1 v_ArrVal_2280) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (not (<= 0 |ULTIMATE.start_main_~end~0#1.offset|))))) is different from false [2022-11-18 18:42:45,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,508 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 23 treesize of output 24 [2022-11-18 18:42:45,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,522 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 68 treesize of output 71 [2022-11-18 18:42:45,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,538 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 64 treesize of output 60 [2022-11-18 18:42:45,544 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 46 treesize of output 42 [2022-11-18 18:42:45,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,617 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 23 treesize of output 24 [2022-11-18 18:42:45,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:45,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,633 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 34 treesize of output 37 [2022-11-18 18:42:45,658 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 7 treesize of output 5 [2022-11-18 18:42:45,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,675 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 21 treesize of output 22 [2022-11-18 18:42:45,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:45,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,691 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 30 treesize of output 33 [2022-11-18 18:42:45,714 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 [2022-11-18 18:42:45,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,723 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 26 treesize of output 27 [2022-11-18 18:42:45,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:45,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,739 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 37 treesize of output 40 [2022-11-18 18:42:45,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:45,753 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 33 treesize of output 33 [2022-11-18 18:42:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 18:42:46,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994795121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:46,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:46,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 47 [2022-11-18 18:42:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710173291] [2022-11-18 18:42:46,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:46,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 18:42:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 18:42:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1681, Unknown=34, NotChecked=348, Total=2256 [2022-11-18 18:42:46,492 INFO L87 Difference]: Start difference. First operand 225 states and 247 transitions. Second operand has 48 states, 47 states have (on average 2.574468085106383) internal successors, (121), 48 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:50,383 INFO L93 Difference]: Finished difference Result 313 states and 344 transitions. [2022-11-18 18:42:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:42:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.574468085106383) internal successors, (121), 48 states have internal predecessors, (121), 0 states have call successors, (0), 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 43 [2022-11-18 18:42:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:50,385 INFO L225 Difference]: With dead ends: 313 [2022-11-18 18:42:50,385 INFO L226 Difference]: Without dead ends: 313 [2022-11-18 18:42:50,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=478, Invalid=3534, Unknown=36, NotChecked=508, Total=4556 [2022-11-18 18:42:50,388 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 339 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1598 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:50,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1251 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1187 Invalid, 0 Unknown, 1598 Unchecked, 1.3s Time] [2022-11-18 18:42:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-18 18:42:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 212. [2022-11-18 18:42:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 189 states have (on average 1.2275132275132274) internal successors, (232), 211 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 232 transitions. [2022-11-18 18:42:50,394 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 232 transitions. Word has length 43 [2022-11-18 18:42:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:50,394 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 232 transitions. [2022-11-18 18:42:50,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.574468085106383) internal successors, (121), 48 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 232 transitions. [2022-11-18 18:42:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:42:50,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:50,396 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1] [2022-11-18 18:42:50,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:50,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:50,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:42:50,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:50,604 INFO L85 PathProgramCache]: Analyzing trace with hash -219770360, now seen corresponding path program 1 times [2022-11-18 18:42:50,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:50,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189056549] [2022-11-18 18:42:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:50,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:42:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:52,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189056549] [2022-11-18 18:42:52,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189056549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:52,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961036748] [2022-11-18 18:42:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:52,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:52,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:52,388 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:52,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:42:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 18:42:52,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:52,674 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 [2022-11-18 18:42:52,706 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 13 treesize of output 9 [2022-11-18 18:42:52,808 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:52,808 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 [2022-11-18 18:42:52,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:52,869 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 [2022-11-18 18:42:52,883 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 [2022-11-18 18:42:52,961 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 16 treesize of output 8 [2022-11-18 18:42:53,054 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 16 treesize of output 18 [2022-11-18 18:42:53,095 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 16 treesize of output 18 [2022-11-18 18:42:53,143 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:42:53,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:42:53,205 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 16 treesize of output 18 [2022-11-18 18:42:53,213 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 [2022-11-18 18:42:53,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2022-11-18 18:42:53,320 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 16 treesize of output 18 [2022-11-18 18:42:53,361 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 16 treesize of output 18 [2022-11-18 18:42:53,383 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:53,383 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 [2022-11-18 18:42:53,433 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 [2022-11-18 18:42:53,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:42:53,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2022-11-18 18:42:53,591 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 16 treesize of output 18 [2022-11-18 18:42:53,604 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 16 treesize of output 18 [2022-11-18 18:42:53,668 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 [2022-11-18 18:42:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:42:53,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:53,957 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2476 (Array Int Int)) (v_ArrVal_2474 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2474) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_2476) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-18 18:42:54,485 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 18:42:54,486 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 13 treesize of output 12 [2022-11-18 18:42:54,792 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2463 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_14| Int) (v_ArrVal_2476 (Array Int Int)) (v_ArrVal_2474 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_132| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_42| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc7#1.base_14| |c_ULTIMATE.start_main_~list~0#1.base|) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_132| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_132| v_ArrVal_2463)) |v_ULTIMATE.start_main_#t~malloc4#1.base_42| v_ArrVal_2474) |v_ULTIMATE.start_main_#t~malloc7#1.base_14| v_ArrVal_2476) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_42|) 0)))) is different from false [2022-11-18 18:42:54,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:54,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:54,811 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-18 18:42:54,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:54,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2022-11-18 18:42:54,824 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 7 treesize of output 3 [2022-11-18 18:42:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:42:54,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961036748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:54,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:42:54,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 50 [2022-11-18 18:42:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402401831] [2022-11-18 18:42:54,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 18:42:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 18:42:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1911, Unknown=17, NotChecked=186, Total=2450 [2022-11-18 18:42:54,880 INFO L87 Difference]: Start difference. First operand 212 states and 232 transitions. Second operand has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:56,643 INFO L93 Difference]: Finished difference Result 290 states and 317 transitions. [2022-11-18 18:42:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:42:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-18 18:42:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:56,645 INFO L225 Difference]: With dead ends: 290 [2022-11-18 18:42:56,645 INFO L226 Difference]: Without dead ends: 290 [2022-11-18 18:42:56,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=788, Invalid=3493, Unknown=17, NotChecked=258, Total=4556 [2022-11-18 18:42:56,647 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 564 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 903 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:56,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 512 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 726 Invalid, 0 Unknown, 903 Unchecked, 0.7s Time] [2022-11-18 18:42:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-18 18:42:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 222. [2022-11-18 18:42:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 199 states have (on average 1.221105527638191) internal successors, (243), 221 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 243 transitions. [2022-11-18 18:42:56,652 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 243 transitions. Word has length 43 [2022-11-18 18:42:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:56,653 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 243 transitions. [2022-11-18 18:42:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 243 transitions. [2022-11-18 18:42:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:42:56,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:56,654 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1] [2022-11-18 18:42:56,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:56,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:56,859 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:42:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash 87815430, now seen corresponding path program 2 times [2022-11-18 18:42:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676963685] [2022-11-18 18:42:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676963685] [2022-11-18 18:42:58,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676963685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509482360] [2022-11-18 18:42:58,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:42:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:58,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:58,456 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:58,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:42:58,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:42:58,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:42:58,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 18:42:58,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:58,739 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 [2022-11-18 18:42:58,768 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 13 treesize of output 9 [2022-11-18 18:42:58,876 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:42:58,876 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 [2022-11-18 18:42:58,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:58,921 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 [2022-11-18 18:42:58,935 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 [2022-11-18 18:42:59,013 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 16 treesize of output 8 [2022-11-18 18:42:59,115 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 16 treesize of output 18 [2022-11-18 18:42:59,150 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 16 treesize of output 18 [2022-11-18 18:42:59,190 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:42:59,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:42:59,276 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 16 treesize of output 18 [2022-11-18 18:42:59,291 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 [2022-11-18 18:42:59,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:42:59,545 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 16 treesize of output 18 [2022-11-18 18:42:59,578 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 16 treesize of output 18 [2022-11-18 18:42:59,625 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 18:42:59,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:42:59,697 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 16 treesize of output 18 [2022-11-18 18:42:59,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-11-18 18:42:59,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 24 treesize of output 12 [2022-11-18 18:42:59,910 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 16 treesize of output 18 [2022-11-18 18:42:59,946 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 16 treesize of output 18 [2022-11-18 18:43:00,018 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 [2022-11-18 18:43:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:00,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:01,307 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-18 18:43:01,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 22 [2022-11-18 18:43:01,786 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2669 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_137| Int) (v_ArrVal_2663 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc4#1.base_46| Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_16| Int) (v_ArrVal_2672 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc4#1.base_44| Int) (v_ArrVal_2659 Int)) (or (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_137| v_ArrVal_2659)) |v_ULTIMATE.start_main_#t~malloc4#1.base_46| v_ArrVal_2663) |v_ULTIMATE.start_main_#t~malloc7#1.base_16| v_ArrVal_2669) |v_ULTIMATE.start_main_#t~malloc4#1.base_44| v_ArrVal_2672) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_46|) 0)) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_16| |c_ULTIMATE.start_main_~list~0#1.base|) (not (<= |v_ULTIMATE.start_main_~end~0#1.offset_137| |c_ULTIMATE.start_main_~list~0#1.offset|)) (= |v_ULTIMATE.start_main_#t~malloc4#1.base_44| |c_ULTIMATE.start_main_~list~0#1.base|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_16| |v_ULTIMATE.start_main_#t~malloc4#1.base_44|))) is different from false [2022-11-18 18:43:01,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:43:01,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:01,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-11-18 18:43:01,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:43:01,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:43:01,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-18 18:43:01,819 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 7 treesize of output 3 [2022-11-18 18:43:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:01,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509482360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:01,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:01,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 55 [2022-11-18 18:43:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907786791] [2022-11-18 18:43:01,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 18:43:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 18:43:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=2470, Unknown=17, NotChecked=104, Total=2970 [2022-11-18 18:43:01,883 INFO L87 Difference]: Start difference. First operand 222 states and 243 transitions. Second operand has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:03,257 INFO L93 Difference]: Finished difference Result 221 states and 242 transitions. [2022-11-18 18:43:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:43:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 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 43 [2022-11-18 18:43:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:03,258 INFO L225 Difference]: With dead ends: 221 [2022-11-18 18:43:03,259 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 18:43:03,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=791, Invalid=4026, Unknown=17, NotChecked=136, Total=4970 [2022-11-18 18:43:03,259 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 303 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 697 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:03,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 481 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 577 Invalid, 0 Unknown, 697 Unchecked, 0.5s Time] [2022-11-18 18:43:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 18:43:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 193. [2022-11-18 18:43:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 171 states have (on average 1.2280701754385965) internal successors, (210), 192 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2022-11-18 18:43:03,264 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 43 [2022-11-18 18:43:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:03,264 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2022-11-18 18:43:03,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 55 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2022-11-18 18:43:03,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:43:03,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:03,266 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:03,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-18 18:43:03,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:03,472 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-18 18:43:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1666240732, now seen corresponding path program 2 times [2022-11-18 18:43:03,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:03,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884028725] [2022-11-18 18:43:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884028725] [2022-11-18 18:43:04,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884028725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840890516] [2022-11-18 18:43:04,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:04,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:04,327 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:04,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eaa8430-4889-4368-bdd2-0b8597db9baa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 18:43:04,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:04,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:04,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 18:43:04,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:04,592 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 [2022-11-18 18:43:04,700 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:43:04,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:43:04,762 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 [2022-11-18 18:43:04,780 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 [2022-11-18 18:43:05,023 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:43:05,023 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 18:43:05,032 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 11 treesize of output 7 [2022-11-18 18:43:05,050 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:05,050 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 [2022-11-18 18:43:05,164 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:43:05,164 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 21 treesize of output 25 [2022-11-18 18:43:05,174 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 11 treesize of output 7 [2022-11-18 18:43:05,193 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:05,193 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 [2022-11-18 18:43:05,288 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-18 18:43:05,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-11-18 18:43:05,390 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:43:05,391 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 21 treesize of output 25 [2022-11-18 18:43:05,400 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 11 treesize of output 7 [2022-11-18 18:43:05,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:43:05,422 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:43:05,422 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 1 case distinctions, treesize of input 44 treesize of output 31 [2022-11-18 18:43:05,747 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:43:05,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 70 [2022-11-18 18:43:05,760 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:05,760 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 82 treesize of output 76 [2022-11-18 18:43:05,807 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 18:43:05,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 82 [2022-11-18 18:43:05,821 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 18:43:05,821 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 79 treesize of output 76 [2022-11-18 18:43:06,148 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 68 treesize of output 48 [2022-11-18 18:43:06,380 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:43:06,381 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 62 treesize of output 29 [2022-11-18 18:43:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:06,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:06,593 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2825 (Array Int Int)) (v_ArrVal_2826 (Array Int Int))) (= 1 (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2825))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2826) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:43:06,741 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2825 (Array Int Int)) (v_ArrVal_2826 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2825))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2826) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) 1)) is different from false [2022-11-18 18:43:06,757 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2825 (Array Int Int)) (v_ArrVal_2821 (Array Int Int)) (v_ArrVal_2826 (Array Int Int))) (= 1 (select |c_#valid| (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| |c_ULTIMATE.start_main_#t~malloc7#1.base|)) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_2825))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2821) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_2826) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2022-11-18 18:43:06,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:06,855 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-18 18:43:07,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,235 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 70 treesize of output 71 [2022-11-18 18:43:07,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,244 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 62 treesize of output 55 [2022-11-18 18:43:07,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:07,259 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 192 treesize of output 195 [2022-11-18 18:43:08,764 INFO L321 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2022-11-18 18:43:08,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4512 treesize of output 4513 [2022-11-18 18:43:08,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:08,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4216 treesize of output 3488 [2022-11-18 18:43:09,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:43:09,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3404 treesize of output 3220 [2022-11-18 18:43:09,218 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 219 treesize of output 181 [2022-11-18 18:43:09,380 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 209 treesize of output 171