./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/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 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b --- 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 21:05:16,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:05:16,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:05:16,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:05:16,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:05:16,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:05:16,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:05:16,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:05:16,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:05:16,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:05:16,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:05:16,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:05:16,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:05:16,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:05:16,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:05:16,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:05:16,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:05:16,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:05:16,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:05:16,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:05:16,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:05:16,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:05:16,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:05:16,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:05:16,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:05:16,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:05:16,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:05:16,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:05:16,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:05:16,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:05:16,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:05:16,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:05:16,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:05:16,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:05:16,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:05:16,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:05:16,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:05:16,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:05:16,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:05:16,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:05:16,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:05:16,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 21:05:16,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:05:16,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:05:16,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:05:16,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:05:16,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:05:16,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:05:16,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:05:16,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:05:16,721 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:05:16,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:05:16,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:05:16,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:05:16,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:05:16,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:05:16,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:05:16,723 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 21:05:16,723 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 21:05:16,724 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 21:05:16,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:05:16,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 21:05:16,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:05:16,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:05:16,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:05:16,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:05:16,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:05:16,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:05:16,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:05:16,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:05:16,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:05:16,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:05:16,727 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bd23b8476745cc5eeb44766af6c01d42c768ef8188ecd9b3f71230eca21db6b [2022-11-18 21:05:17,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:05:17,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:05:17,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:05:17,129 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:05:17,131 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:05:17,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2022-11-18 21:05:17,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/data/62bfd8b14/f3695188159c45eaa63741c69bbaad75/FLAGb516d0d2a [2022-11-18 21:05:18,060 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:05:18,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i [2022-11-18 21:05:18,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/data/62bfd8b14/f3695188159c45eaa63741c69bbaad75/FLAGb516d0d2a [2022-11-18 21:05:18,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/data/62bfd8b14/f3695188159c45eaa63741c69bbaad75 [2022-11-18 21:05:18,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:05:18,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:05:18,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:05:18,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:05:18,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:05:18,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cc1ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18, skipping insertion in model container [2022-11-18 21:05:18,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:05:18,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:05:18,659 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2022-11-18 21:05:18,668 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2022-11-18 21:05:18,669 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2022-11-18 21:05:18,672 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2022-11-18 21:05:18,674 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2022-11-18 21:05:18,677 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2022-11-18 21:05:18,679 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2022-11-18 21:05:18,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:05:18,713 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:05:18,788 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22673,22686] [2022-11-18 21:05:18,792 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22743,22756] [2022-11-18 21:05:18,805 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22807,22820] [2022-11-18 21:05:18,808 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22902,22915] [2022-11-18 21:05:18,809 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[22974,22987] [2022-11-18 21:05:18,811 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23113,23126] [2022-11-18 21:05:18,812 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_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/sv-benchmarks/c/forester-heap/dll-rb-sentinel-2.i[23187,23200] [2022-11-18 21:05:18,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:05:18,844 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:05:18,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18 WrapperNode [2022-11-18 21:05:18,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:05:18,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:05:18,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:05:18,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:05:18,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,924 INFO L138 Inliner]: procedures = 119, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2022-11-18 21:05:18,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:05:18,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:05:18,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:05:18,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:05:18,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:05:18,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:05:18,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:05:18,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:05:18,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (1/1) ... [2022-11-18 21:05:18,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:05:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:19,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:05:19,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:05:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:05:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:05:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:05:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:05:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:05:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:05:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:05:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:05:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:05:19,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:05:19,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:05:19,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:05:20,089 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:05:20,101 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:05:20,102 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-18 21:05:20,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:20 BoogieIcfgContainer [2022-11-18 21:05:20,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:05:20,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:05:20,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:05:20,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:05:20,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:05:18" (1/3) ... [2022-11-18 21:05:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c52538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:20, skipping insertion in model container [2022-11-18 21:05:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:18" (2/3) ... [2022-11-18 21:05:20,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c52538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:20, skipping insertion in model container [2022-11-18 21:05:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:20" (3/3) ... [2022-11-18 21:05:20,118 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2022-11-18 21:05:20,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:05:20,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-11-18 21:05:20,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:05:20,219 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;@3060673b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:05:20,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-18 21:05:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 90 states have (on average 2.2222222222222223) internal successors, (200), 170 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 21:05:20,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:20,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 21:05:20,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:20,243 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-18 21:05:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:20,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082834446] [2022-11-18 21:05:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:20,504 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 21:05:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:20,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082834446] [2022-11-18 21:05:20,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082834446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:20,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:20,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578621686] [2022-11-18 21:05:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:20,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:20,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:20,558 INFO L87 Difference]: Start difference. First operand has 171 states, 90 states have (on average 2.2222222222222223) internal successors, (200), 170 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 21:05:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:20,844 INFO L93 Difference]: Finished difference Result 198 states and 205 transitions. [2022-11-18 21:05:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:20,847 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 21:05:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:20,859 INFO L225 Difference]: With dead ends: 198 [2022-11-18 21:05:20,859 INFO L226 Difference]: Without dead ends: 196 [2022-11-18 21:05:20,861 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 21:05:20,866 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 151 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:20,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 117 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-18 21:05:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 170. [2022-11-18 21:05:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 93 states have (on average 1.913978494623656) internal successors, (178), 169 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 21:05:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2022-11-18 21:05:20,920 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 3 [2022-11-18 21:05:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:20,921 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2022-11-18 21:05:20,921 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 21:05:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2022-11-18 21:05:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 21:05:20,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:20,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 21:05:20,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:05:20,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 21:05:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:20,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052765796] [2022-11-18 21:05:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:20,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:21,164 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 21:05:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052765796] [2022-11-18 21:05:21,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052765796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:21,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:21,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796713345] [2022-11-18 21:05:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:21,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:21,175 INFO L87 Difference]: Start difference. First operand 170 states and 178 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 21:05:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:21,394 INFO L93 Difference]: Finished difference Result 166 states and 173 transitions. [2022-11-18 21:05:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:21,395 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 21:05:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:21,401 INFO L225 Difference]: With dead ends: 166 [2022-11-18 21:05:21,402 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 21:05:21,406 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 21:05:21,408 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 162 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:21,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 90 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 21:05:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-18 21:05:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 93 states have (on average 1.8602150537634408) internal successors, (173), 165 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 21:05:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2022-11-18 21:05:21,429 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 3 [2022-11-18 21:05:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:21,430 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2022-11-18 21:05:21,430 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 21:05:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2022-11-18 21:05:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:05:21,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:21,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:21,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:05:21,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026981, now seen corresponding path program 1 times [2022-11-18 21:05:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:21,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629989278] [2022-11-18 21:05:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:21,555 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 21:05:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629989278] [2022-11-18 21:05:21,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629989278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:21,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:21,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782822874] [2022-11-18 21:05:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:21,559 INFO L87 Difference]: Start difference. First operand 166 states and 173 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:21,779 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2022-11-18 21:05:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:21,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 21:05:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:21,782 INFO L225 Difference]: With dead ends: 162 [2022-11-18 21:05:21,782 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 21:05:21,783 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 21:05:21,789 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 136 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:21,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 103 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 21:05:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2022-11-18 21:05:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 159 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 21:05:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2022-11-18 21:05:21,809 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 7 [2022-11-18 21:05:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2022-11-18 21:05:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2022-11-18 21:05:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:05:21,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:21,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:05:21,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026982, now seen corresponding path program 1 times [2022-11-18 21:05:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:21,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548290544] [2022-11-18 21:05:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:21,968 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 21:05:21,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:21,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548290544] [2022-11-18 21:05:21,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548290544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:21,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:21,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049005987] [2022-11-18 21:05:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:21,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:21,972 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,156 INFO L93 Difference]: Finished difference Result 177 states and 183 transitions. [2022-11-18 21:05:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 21:05:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,159 INFO L225 Difference]: With dead ends: 177 [2022-11-18 21:05:22,159 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 21:05:22,159 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 21:05:22,169 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 134 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 112 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 21:05:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2022-11-18 21:05:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.702970297029703) internal successors, (172), 163 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 21:05:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2022-11-18 21:05:22,194 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 7 [2022-11-18 21:05:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:22,195 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2022-11-18 21:05:22,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2022-11-18 21:05:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:05:22,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:22,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:22,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:05:22,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1253214510, now seen corresponding path program 1 times [2022-11-18 21:05:22,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:22,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765146533] [2022-11-18 21:05:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:22,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:22,492 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 21:05:22,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:22,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765146533] [2022-11-18 21:05:22,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765146533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:22,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:22,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:05:22,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125726099] [2022-11-18 21:05:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:22,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:22,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:22,496 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,797 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2022-11-18 21:05:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:05:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,799 INFO L225 Difference]: With dead ends: 164 [2022-11-18 21:05:22,800 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 21:05:22,800 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 21:05:22,801 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 218 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 89 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:05:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 21:05:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2022-11-18 21:05:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.5631067961165048) internal successors, (161), 150 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:05:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2022-11-18 21:05:22,809 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 13 [2022-11-18 21:05:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:22,809 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2022-11-18 21:05:22,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2022-11-18 21:05:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 21:05:22,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:22,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:05:22,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1253214511, now seen corresponding path program 1 times [2022-11-18 21:05:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849374463] [2022-11-18 21:05:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:23,072 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 21:05:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849374463] [2022-11-18 21:05:23,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849374463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:23,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:23,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:05:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081549815] [2022-11-18 21:05:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:23,075 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:23,428 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2022-11-18 21:05:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:05:23,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:23,430 INFO L225 Difference]: With dead ends: 193 [2022-11-18 21:05:23,430 INFO L226 Difference]: Without dead ends: 193 [2022-11-18 21:05:23,430 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 21:05:23,431 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 188 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:23,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 133 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:05:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-18 21:05:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 161. [2022-11-18 21:05:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 160 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 21:05:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2022-11-18 21:05:23,440 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 13 [2022-11-18 21:05:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:23,440 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2022-11-18 21:05:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 21:05:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2022-11-18 21:05:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 21:05:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:23,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:05:23,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1748354145, now seen corresponding path program 1 times [2022-11-18 21:05:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:23,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974285153] [2022-11-18 21:05:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:23,571 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 21:05:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:23,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974285153] [2022-11-18 21:05:23,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974285153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:23,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:23,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:05:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309350064] [2022-11-18 21:05:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:23,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:23,576 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:05:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:23,915 INFO L93 Difference]: Finished difference Result 202 states and 212 transitions. [2022-11-18 21:05:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:05:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:05:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:23,918 INFO L225 Difference]: With dead ends: 202 [2022-11-18 21:05:23,919 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 21:05:23,919 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 21:05:23,920 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 309 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:23,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 157 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:05:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 21:05:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 162. [2022-11-18 21:05:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 116 states have (on average 1.5086206896551724) internal successors, (175), 161 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:05:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2022-11-18 21:05:23,927 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 15 [2022-11-18 21:05:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:23,928 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2022-11-18 21:05:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:05:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2022-11-18 21:05:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:05:23,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:23,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:23,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:05:23,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1637230725, now seen corresponding path program 1 times [2022-11-18 21:05:23,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:23,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587571309] [2022-11-18 21:05:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,116 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 21:05:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:24,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587571309] [2022-11-18 21:05:24,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587571309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:24,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:24,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809302648] [2022-11-18 21:05:24,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:24,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:24,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:24,120 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:24,380 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2022-11-18 21:05:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:05:24,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:24,382 INFO L225 Difference]: With dead ends: 161 [2022-11-18 21:05:24,382 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 21:05:24,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:24,384 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 10 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:24,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 352 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 21:05:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-18 21:05:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 160 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 21:05:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2022-11-18 21:05:24,390 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 16 [2022-11-18 21:05:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:24,390 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2022-11-18 21:05:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,391 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2022-11-18 21:05:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:05:24,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:24,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:24,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:05:24,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1637230724, now seen corresponding path program 1 times [2022-11-18 21:05:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:24,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550622340] [2022-11-18 21:05:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,705 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 21:05:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:24,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550622340] [2022-11-18 21:05:24,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550622340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:24,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:24,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001474757] [2022-11-18 21:05:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:24,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:24,709 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:24,983 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2022-11-18 21:05:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:05:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:24,985 INFO L225 Difference]: With dead ends: 160 [2022-11-18 21:05:24,985 INFO L226 Difference]: Without dead ends: 160 [2022-11-18 21:05:24,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:24,986 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 5 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:24,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 343 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-18 21:05:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-18 21:05:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 21:05:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2022-11-18 21:05:24,991 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 16 [2022-11-18 21:05:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:24,992 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2022-11-18 21:05:24,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 21:05:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2022-11-18 21:05:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 21:05:24,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:24,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:24,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:05:24,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:24,995 INFO L85 PathProgramCache]: Analyzing trace with hash 154003716, now seen corresponding path program 1 times [2022-11-18 21:05:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101760619] [2022-11-18 21:05:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:25,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101760619] [2022-11-18 21:05:25,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101760619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:25,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:25,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:05:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792064302] [2022-11-18 21:05:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:25,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:05:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:05:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:05:25,414 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:25,948 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2022-11-18 21:05:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 21:05:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:25,950 INFO L225 Difference]: With dead ends: 214 [2022-11-18 21:05:25,951 INFO L226 Difference]: Without dead ends: 214 [2022-11-18 21:05:25,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:25,952 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 345 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:25,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 327 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:05:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-18 21:05:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 165. [2022-11-18 21:05:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 121 states have (on average 1.4545454545454546) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 21:05:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2022-11-18 21:05:25,958 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 18 [2022-11-18 21:05:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:25,958 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2022-11-18 21:05:25,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2022-11-18 21:05:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:05:25,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:25,960 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] [2022-11-18 21:05:25,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:05:25,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash 510771581, now seen corresponding path program 1 times [2022-11-18 21:05:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:25,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497938824] [2022-11-18 21:05:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:26,340 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 21:05:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497938824] [2022-11-18 21:05:26,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497938824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:26,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:26,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:05:26,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468326656] [2022-11-18 21:05:26,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:26,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:05:26,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:05:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:05:26,344 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:05:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:26,989 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2022-11-18 21:05:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-11-18 21:05:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:26,991 INFO L225 Difference]: With dead ends: 164 [2022-11-18 21:05:26,992 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 21:05:26,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:05:26,993 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 187 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:26,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 325 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:05:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 21:05:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-18 21:05:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.4462809917355373) internal successors, (175), 163 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:05:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2022-11-18 21:05:26,998 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 20 [2022-11-18 21:05:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:26,998 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2022-11-18 21:05:26,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:05:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2022-11-18 21:05:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:05:26,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:27,000 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] [2022-11-18 21:05:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:05:27,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash 510771582, now seen corresponding path program 1 times [2022-11-18 21:05:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237501160] [2022-11-18 21:05:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:27,565 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 21:05:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:27,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237501160] [2022-11-18 21:05:27,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237501160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:27,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:27,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:05:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121161975] [2022-11-18 21:05:27,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:27,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:05:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:05:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:05:27,568 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:05:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:28,551 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2022-11-18 21:05:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:05:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-11-18 21:05:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:28,553 INFO L225 Difference]: With dead ends: 182 [2022-11-18 21:05:28,553 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 21:05:28,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:05:28,555 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 238 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:28,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 391 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:05:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 21:05:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2022-11-18 21:05:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 131 states have (on average 1.3969465648854962) internal successors, (183), 167 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 183 transitions. [2022-11-18 21:05:28,562 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 183 transitions. Word has length 20 [2022-11-18 21:05:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:28,562 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 183 transitions. [2022-11-18 21:05:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 21:05:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 183 transitions. [2022-11-18 21:05:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 21:05:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:28,564 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] [2022-11-18 21:05:28,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:05:28,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2006006511, now seen corresponding path program 1 times [2022-11-18 21:05:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142634706] [2022-11-18 21:05:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:28,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,951 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 21:05:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:28,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142634706] [2022-11-18 21:05:28,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142634706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24416764] [2022-11-18 21:05:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:28,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:28,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:28,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:28,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:05:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 21:05:29,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:29,228 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 21:05:29,266 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 21:05:29,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:29,345 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 21:05:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:29,366 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 21:05:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:29,400 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 21:05:29,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:29,424 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 21:05:29,702 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 21:05:29,710 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 21:05:29,760 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 21:05:29,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:29,883 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 21:05:29,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24416764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:29,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:05:29,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 12 [2022-11-18 21:05:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863214140] [2022-11-18 21:05:29,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:05:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:29,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:05:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:29,886 INFO L87 Difference]: Start difference. First operand 168 states and 183 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:05:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:30,569 INFO L93 Difference]: Finished difference Result 219 states and 238 transitions. [2022-11-18 21:05:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:05:30,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 21:05:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:30,572 INFO L225 Difference]: With dead ends: 219 [2022-11-18 21:05:30,572 INFO L226 Difference]: Without dead ends: 219 [2022-11-18 21:05:30,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:05:30,573 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 361 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:30,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 424 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:05:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-18 21:05:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 175. [2022-11-18 21:05:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 174 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 21:05:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2022-11-18 21:05:30,579 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 25 [2022-11-18 21:05:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:30,580 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2022-11-18 21:05:30,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 21:05:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2022-11-18 21:05:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 21:05:30,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:30,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:30,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:05:30,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:30,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1963988258, now seen corresponding path program 1 times [2022-11-18 21:05:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:30,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8344487] [2022-11-18 21:05:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,979 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 21:05:30,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:30,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8344487] [2022-11-18 21:05:30,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8344487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:30,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:30,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:05:30,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105086433] [2022-11-18 21:05:30,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:30,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:30,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:30,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:30,983 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:31,209 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2022-11-18 21:05:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:05:31,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 21:05:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:31,211 INFO L225 Difference]: With dead ends: 179 [2022-11-18 21:05:31,211 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 21:05:31,211 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 21:05:31,212 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 26 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 340 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 21:05:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2022-11-18 21:05:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 173 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:05:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 188 transitions. [2022-11-18 21:05:31,217 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 188 transitions. Word has length 25 [2022-11-18 21:05:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:31,217 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 188 transitions. [2022-11-18 21:05:31,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 188 transitions. [2022-11-18 21:05:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 21:05:31,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:31,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:31,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:05:31,218 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1375479745, now seen corresponding path program 1 times [2022-11-18 21:05:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835319872] [2022-11-18 21:05:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,374 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 21:05:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:31,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835319872] [2022-11-18 21:05:31,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835319872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:31,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:31,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008049822] [2022-11-18 21:05:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:31,377 INFO L87 Difference]: Start difference. First operand 174 states and 188 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:31,538 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2022-11-18 21:05:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:05:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 21:05:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:31,540 INFO L225 Difference]: With dead ends: 176 [2022-11-18 21:05:31,540 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 21:05:31,541 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 21:05:31,541 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 21 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:31,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 288 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:05:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 21:05:31,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2022-11-18 21:05:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 171 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 21:05:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2022-11-18 21:05:31,547 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 26 [2022-11-18 21:05:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:31,547 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 185 transitions. [2022-11-18 21:05:31,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2022-11-18 21:05:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 21:05:31,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:31,549 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] [2022-11-18 21:05:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:05:31,550 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash -752171090, now seen corresponding path program 1 times [2022-11-18 21:05:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:31,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860315551] [2022-11-18 21:05:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,745 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 21:05:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:31,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860315551] [2022-11-18 21:05:31,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860315551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:31,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:31,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452332914] [2022-11-18 21:05:31,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:31,748 INFO L87 Difference]: Start difference. First operand 172 states and 185 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 21:05:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:31,967 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2022-11-18 21:05:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:05:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 21:05:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:31,969 INFO L225 Difference]: With dead ends: 171 [2022-11-18 21:05:31,969 INFO L226 Difference]: Without dead ends: 171 [2022-11-18 21:05:31,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:31,970 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 7 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:31,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 327 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-18 21:05:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-18 21:05:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 170 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 21:05:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 184 transitions. [2022-11-18 21:05:31,975 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 184 transitions. Word has length 28 [2022-11-18 21:05:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:31,976 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 184 transitions. [2022-11-18 21:05:31,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 21:05:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 184 transitions. [2022-11-18 21:05:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 21:05:31,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:31,977 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] [2022-11-18 21:05:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:05:31,978 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash -752171089, now seen corresponding path program 1 times [2022-11-18 21:05:31,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:31,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810347724] [2022-11-18 21:05:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:32,329 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 21:05:32,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810347724] [2022-11-18 21:05:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810347724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:32,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:32,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761862906] [2022-11-18 21:05:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:05:32,332 INFO L87 Difference]: Start difference. First operand 171 states and 184 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 21:05:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:32,568 INFO L93 Difference]: Finished difference Result 170 states and 183 transitions. [2022-11-18 21:05:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:05:32,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 21:05:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:32,570 INFO L225 Difference]: With dead ends: 170 [2022-11-18 21:05:32,570 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 21:05:32,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:32,571 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 3 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:32,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 323 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 21:05:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-18 21:05:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.3455882352941178) internal successors, (183), 169 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2022-11-18 21:05:32,576 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 28 [2022-11-18 21:05:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:32,576 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2022-11-18 21:05:32,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 21:05:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2022-11-18 21:05:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:05:32,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:32,580 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 21:05:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:05:32,581 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1361877815, now seen corresponding path program 1 times [2022-11-18 21:05:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445525134] [2022-11-18 21:05:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445525134] [2022-11-18 21:05:32,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445525134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:32,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:32,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:05:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105408223] [2022-11-18 21:05:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:05:32,872 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 21:05:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:33,058 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2022-11-18 21:05:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:05:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 21:05:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:33,060 INFO L225 Difference]: With dead ends: 169 [2022-11-18 21:05:33,060 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 21:05:33,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 21:05:33,061 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 16 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:33,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 250 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:05:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 21:05:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-11-18 21:05:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 167 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 21:05:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 180 transitions. [2022-11-18 21:05:33,068 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 180 transitions. Word has length 29 [2022-11-18 21:05:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:33,068 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 180 transitions. [2022-11-18 21:05:33,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 21:05:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 180 transitions. [2022-11-18 21:05:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 21:05:33,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:33,070 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 21:05:33,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:05:33,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1200575117, now seen corresponding path program 1 times [2022-11-18 21:05:33,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:33,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740360101] [2022-11-18 21:05:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:33,598 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 21:05:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740360101] [2022-11-18 21:05:33,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740360101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:33,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:33,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:05:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889908217] [2022-11-18 21:05:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:05:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:05:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:33,604 INFO L87 Difference]: Start difference. First operand 168 states and 180 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 21:05:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:34,580 INFO L93 Difference]: Finished difference Result 205 states and 215 transitions. [2022-11-18 21:05:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:05:34,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 21:05:34,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:34,582 INFO L225 Difference]: With dead ends: 205 [2022-11-18 21:05:34,582 INFO L226 Difference]: Without dead ends: 205 [2022-11-18 21:05:34,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:05:34,605 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 504 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:34,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 299 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:05:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-18 21:05:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 168. [2022-11-18 21:05:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 135 states have (on average 1.325925925925926) internal successors, (179), 167 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 21:05:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2022-11-18 21:05:34,612 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 31 [2022-11-18 21:05:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:34,612 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2022-11-18 21:05:34,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 21:05:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2022-11-18 21:05:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 21:05:34,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:34,613 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 21:05:34,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:05:34,614 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2047381958, now seen corresponding path program 1 times [2022-11-18 21:05:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:34,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044767679] [2022-11-18 21:05:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044767679] [2022-11-18 21:05:34,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044767679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:34,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146850152] [2022-11-18 21:05:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:34,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:34,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:05:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:05:35,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:35,143 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 21:05:35,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146850152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:35,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:05:35,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-11-18 21:05:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353665745] [2022-11-18 21:05:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:35,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:05:35,149 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:05:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:35,205 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2022-11-18 21:05:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:05:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:35,207 INFO L225 Difference]: With dead ends: 169 [2022-11-18 21:05:35,207 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 21:05:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:05:35,209 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 72 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:35,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 127 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:05:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 21:05:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-18 21:05:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 168 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 21:05:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2022-11-18 21:05:35,220 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 31 [2022-11-18 21:05:35,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:35,220 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2022-11-18 21:05:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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 21:05:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2022-11-18 21:05:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 21:05:35,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:35,222 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] [2022-11-18 21:05:35,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:35,431 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash 739766256, now seen corresponding path program 1 times [2022-11-18 21:05:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:35,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331685242] [2022-11-18 21:05:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,806 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 21:05:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:35,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331685242] [2022-11-18 21:05:35,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331685242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:35,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:35,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777944349] [2022-11-18 21:05:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:05:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:05:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:05:35,814 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 21:05:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:36,304 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2022-11-18 21:05:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:05:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:36,306 INFO L225 Difference]: With dead ends: 169 [2022-11-18 21:05:36,306 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 21:05:36,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:05:36,307 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 60 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:36,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 374 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:05:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 21:05:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-11-18 21:05:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 167 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 21:05:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2022-11-18 21:05:36,311 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 32 [2022-11-18 21:05:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:36,312 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2022-11-18 21:05:36,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 21:05:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2022-11-18 21:05:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 21:05:36,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:36,313 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] [2022-11-18 21:05:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 21:05:36,314 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 739766257, now seen corresponding path program 1 times [2022-11-18 21:05:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:36,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577471502] [2022-11-18 21:05:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:36,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,844 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 21:05:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:36,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577471502] [2022-11-18 21:05:36,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577471502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:36,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:36,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:05:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027360232] [2022-11-18 21:05:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:36,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:05:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:05:36,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:05:36,847 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 21:05:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:37,354 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2022-11-18 21:05:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:37,358 INFO L225 Difference]: With dead ends: 164 [2022-11-18 21:05:37,358 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 21:05:37,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:05:37,359 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 74 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:37,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 377 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:05:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 21:05:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 152. [2022-11-18 21:05:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 151 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:05:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2022-11-18 21:05:37,363 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 32 [2022-11-18 21:05:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:37,363 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2022-11-18 21:05:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 21:05:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2022-11-18 21:05:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 21:05:37,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:37,364 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 21:05:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 21:05:37,364 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:37,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash -439030339, now seen corresponding path program 1 times [2022-11-18 21:05:37,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867166082] [2022-11-18 21:05:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:37,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:37,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867166082] [2022-11-18 21:05:37,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867166082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:37,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600869997] [2022-11-18 21:05:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:37,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:05:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:37,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:05:37,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:37,803 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 21:05:37,862 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 21:05:37,877 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 21:05:37,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:37,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600869997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:37,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:05:37,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-18 21:05:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260983433] [2022-11-18 21:05:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:05:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:05:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:05:37,881 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 21:05:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:38,012 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2022-11-18 21:05:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:05:38,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 21:05:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:38,014 INFO L225 Difference]: With dead ends: 161 [2022-11-18 21:05:38,014 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 21:05:38,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:05:38,015 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 7 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:38,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 263 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:05:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 21:05:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2022-11-18 21:05:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 154 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 21:05:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2022-11-18 21:05:38,019 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 33 [2022-11-18 21:05:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:38,020 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2022-11-18 21:05:38,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 21:05:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2022-11-18 21:05:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:05:38,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:38,021 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] [2022-11-18 21:05:38,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:38,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 21:05:38,230 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:38,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1958129913, now seen corresponding path program 1 times [2022-11-18 21:05:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:38,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559959599] [2022-11-18 21:05:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:38,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:38,553 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 21:05:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559959599] [2022-11-18 21:05:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559959599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:38,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819280485] [2022-11-18 21:05:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:38,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:38,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:38,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:05:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:38,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 21:05:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:38,841 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 21:05:38,848 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 21:05:38,894 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 21:05:38,903 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 21:05:38,926 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 21:05:38,939 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 21:05:39,119 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 21:05:39,130 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 21:05:39,222 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 21:05:39,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:39,369 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 21:05:39,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819280485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:39,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:05:39,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2022-11-18 21:05:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156344911] [2022-11-18 21:05:39,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:05:39,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:05:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:05:39,373 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 21:05:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:40,303 INFO L93 Difference]: Finished difference Result 210 states and 222 transitions. [2022-11-18 21:05:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:40,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 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 34 [2022-11-18 21:05:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:40,305 INFO L225 Difference]: With dead ends: 210 [2022-11-18 21:05:40,305 INFO L226 Difference]: Without dead ends: 210 [2022-11-18 21:05:40,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:05:40,306 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 350 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:40,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 487 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:05:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-18 21:05:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2022-11-18 21:05:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 141 states have (on average 1.2553191489361701) internal successors, (177), 165 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 21:05:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 177 transitions. [2022-11-18 21:05:40,310 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 177 transitions. Word has length 34 [2022-11-18 21:05:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:40,311 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 177 transitions. [2022-11-18 21:05:40,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 21:05:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 177 transitions. [2022-11-18 21:05:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 21:05:40,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:40,312 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 21:05:40,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 21:05:40,512 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 572484842, now seen corresponding path program 1 times [2022-11-18 21:05:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:40,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946330842] [2022-11-18 21:05:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:40,580 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 21:05:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946330842] [2022-11-18 21:05:40,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946330842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:40,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:40,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:05:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9014305] [2022-11-18 21:05:40,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:40,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:40,583 INFO L87 Difference]: Start difference. First operand 166 states and 177 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 21:05:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:40,636 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2022-11-18 21:05:40,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:40,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 21:05:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:40,638 INFO L225 Difference]: With dead ends: 165 [2022-11-18 21:05:40,638 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 21:05:40,643 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 21:05:40,644 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:40,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:05:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 21:05:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-18 21:05:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 164 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:05:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2022-11-18 21:05:40,662 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 35 [2022-11-18 21:05:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2022-11-18 21:05:40,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 21:05:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2022-11-18 21:05:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 21:05:40,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:40,664 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, 1, 1] [2022-11-18 21:05:40,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 21:05:40,665 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash 402130029, now seen corresponding path program 1 times [2022-11-18 21:05:40,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:40,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892299414] [2022-11-18 21:05:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:41,042 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 21:05:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892299414] [2022-11-18 21:05:41,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892299414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104055892] [2022-11-18 21:05:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:41,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:41,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:41,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:05:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:41,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:05:41,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:41,355 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:05:41,356 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 21:05:41,765 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 21:05:41,949 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 21:05:41,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:42,388 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 21:05:42,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104055892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:42,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:05:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-18 21:05:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464382884] [2022-11-18 21:05:42,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:05:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:05:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:05:42,391 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand has 14 states, 13 states have (on average 7.230769230769231) internal successors, (94), 14 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 21:05:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:42,877 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2022-11-18 21:05:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:42,878 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.230769230769231) internal successors, (94), 14 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 37 [2022-11-18 21:05:42,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:42,879 INFO L225 Difference]: With dead ends: 175 [2022-11-18 21:05:42,879 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 21:05:42,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 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 21:05:42,880 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:42,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 524 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 272 Invalid, 0 Unknown, 186 Unchecked, 0.3s Time] [2022-11-18 21:05:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 21:05:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-18 21:05:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 126 states have (on average 1.2619047619047619) internal successors, (159), 149 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 21:05:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2022-11-18 21:05:42,889 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 37 [2022-11-18 21:05:42,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:42,889 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2022-11-18 21:05:42,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.230769230769231) internal successors, (94), 14 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 21:05:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2022-11-18 21:05:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 21:05:42,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:42,891 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] [2022-11-18 21:05:42,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:43,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 21:05:43,100 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash -426569403, now seen corresponding path program 1 times [2022-11-18 21:05:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:43,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106513127] [2022-11-18 21:05:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:44,396 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 21:05:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106513127] [2022-11-18 21:05:44,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106513127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042590213] [2022-11-18 21:05:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:44,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:44,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:05:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:44,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 21:05:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:44,669 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 21:05:44,707 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 21:05:44,822 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:05:44,823 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 21:05:44,886 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 21:05:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:44,913 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 21:05:45,091 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:05:45,091 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 29 treesize of output 30 [2022-11-18 21:05:45,099 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 20 treesize of output 22 [2022-11-18 21:05:45,144 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 16 treesize of output 8 [2022-11-18 21:05:45,231 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 21:05:45,268 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 21:05:45,423 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 21:05:45,427 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 21:05:45,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:45,492 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1584 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1584) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:05:45,539 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1584 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_1584) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:05:45,561 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1584 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1584) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:05:45,589 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1584 (Array Int Int)) (v_ArrVal_1582 (Array Int Int)) (v_ArrVal_1581 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1582) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1581) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1584) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:05:45,600 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1584 (Array Int Int)) (v_ArrVal_1582 (Array Int Int)) (v_ArrVal_1581 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store (store |c_#memory_int| .cse0 v_ArrVal_1582) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1581) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1584)) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:05:45,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:05:45,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2022-11-18 21:05:45,643 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 70 treesize of output 62 [2022-11-18 21:05:45,659 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 29 treesize of output 27 [2022-11-18 21:05:48,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:05:48,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:05:48,079 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 21:05:48,086 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 21:05:48,090 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 21:05:48,137 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 21:05:48,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042590213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:48,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:05:48,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-11-18 21:05:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348999243] [2022-11-18 21:05:48,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:48,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 21:05:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 21:05:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=778, Unknown=11, NotChecked=310, Total=1260 [2022-11-18 21:05:48,141 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:52,656 INFO L93 Difference]: Finished difference Result 362 states and 386 transitions. [2022-11-18 21:05:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:05:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 21:05:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:52,658 INFO L225 Difference]: With dead ends: 362 [2022-11-18 21:05:52,658 INFO L226 Difference]: Without dead ends: 362 [2022-11-18 21:05:52,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=368, Invalid=1447, Unknown=11, NotChecked=430, Total=2256 [2022-11-18 21:05:52,660 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 445 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1222 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:52,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 751 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1035 Invalid, 0 Unknown, 1222 Unchecked, 1.5s Time] [2022-11-18 21:05:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-18 21:05:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 176. [2022-11-18 21:05:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 152 states have (on average 1.230263157894737) internal successors, (187), 175 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 21:05:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2022-11-18 21:05:52,667 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 39 [2022-11-18 21:05:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:52,668 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2022-11-18 21:05:52,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 36 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2022-11-18 21:05:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 21:05:52,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:52,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:52,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:52,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 21:05:52,877 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:52,878 INFO L85 PathProgramCache]: Analyzing trace with hash 268919448, now seen corresponding path program 1 times [2022-11-18 21:05:52,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:52,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968677763] [2022-11-18 21:05:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:54,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:54,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968677763] [2022-11-18 21:05:54,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968677763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:54,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:54,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 21:05:54,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677845649] [2022-11-18 21:05:54,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:54,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:05:54,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:05:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:05:54,070 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 21:05:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:55,909 INFO L93 Difference]: Finished difference Result 190 states and 202 transitions. [2022-11-18 21:05:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 21:05:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:55,911 INFO L225 Difference]: With dead ends: 190 [2022-11-18 21:05:55,911 INFO L226 Difference]: Without dead ends: 190 [2022-11-18 21:05:55,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-11-18 21:05:55,913 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 278 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:55,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 580 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 21:05:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-18 21:05:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 167. [2022-11-18 21:05:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 166 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 21:05:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2022-11-18 21:05:55,920 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 41 [2022-11-18 21:05:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:55,921 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2022-11-18 21:05:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 21:05:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2022-11-18 21:05:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:05:55,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:55,922 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, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:55,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 21:05:55,923 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:05:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1035696014, now seen corresponding path program 1 times [2022-11-18 21:05:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:55,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442831421] [2022-11-18 21:05:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:56,705 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 21:05:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442831421] [2022-11-18 21:05:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442831421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788759009] [2022-11-18 21:05:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:56,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:56,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:05:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:57,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 21:05:57,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:57,025 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 21:05:57,193 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 21:05:57,193 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 21:05:57,287 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 21:05:57,509 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:05:57,510 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 21:05:57,744 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:05:57,744 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 21:05:57,844 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:05:57,844 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 21:05:58,258 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 21:05:58,405 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 21:05:58,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:03,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:03,220 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-18 21:06:03,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:03,241 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 252 treesize of output 227 [2022-11-18 21:06:03,253 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 212 treesize of output 204 [2022-11-18 21:06:03,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:03,275 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 204 treesize of output 196 [2022-11-18 21:06:09,277 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 21:06:09,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788759009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:09,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:06:09,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 31 [2022-11-18 21:06:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593660147] [2022-11-18 21:06:09,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 21:06:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 21:06:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=787, Unknown=45, NotChecked=0, Total=992 [2022-11-18 21:06:09,280 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 32 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:10,775 INFO L93 Difference]: Finished difference Result 243 states and 259 transitions. [2022-11-18 21:06:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 21:06:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-18 21:06:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:10,777 INFO L225 Difference]: With dead ends: 243 [2022-11-18 21:06:10,777 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 21:06:10,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=273, Invalid=1156, Unknown=53, NotChecked=0, Total=1482 [2022-11-18 21:06:10,779 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 519 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 866 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:10,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 612 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 686 Invalid, 0 Unknown, 866 Unchecked, 1.1s Time] [2022-11-18 21:06:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 21:06:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2022-11-18 21:06:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 152 states have (on average 1.236842105263158) internal successors, (188), 174 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:06:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 188 transitions. [2022-11-18 21:06:10,786 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 188 transitions. Word has length 46 [2022-11-18 21:06:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:10,786 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 188 transitions. [2022-11-18 21:06:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 188 transitions. [2022-11-18 21:06:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:06:10,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:10,788 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, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:10,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:11,011 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:06:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1035696015, now seen corresponding path program 1 times [2022-11-18 21:06:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:11,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42265309] [2022-11-18 21:06:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:11,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:12,047 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 21:06:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:12,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42265309] [2022-11-18 21:06:12,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42265309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:12,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044032327] [2022-11-18 21:06:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:12,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:12,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:12,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:06:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:12,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 21:06:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:12,349 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 21:06:12,503 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:06:12,504 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 21:06:12,574 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 21:06:12,755 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:12,755 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 19 treesize of output 22 [2022-11-18 21:06:12,958 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:12,959 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 21:06:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:12,975 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 21:06:13,125 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:13,126 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 44 treesize of output 43 [2022-11-18 21:06:13,136 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 33 treesize of output 33 [2022-11-18 21:06:13,633 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 31 treesize of output 19 [2022-11-18 21:06:13,639 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 26 treesize of output 14 [2022-11-18 21:06:13,805 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 21:06:13,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:14,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:14,327 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 43 treesize of output 47 [2022-11-18 21:06:14,396 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_1 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_prenex_1) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8))) (forall ((v_ArrVal_1954 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1954) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (forall ((v_ArrVal_1955 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1955) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (+ |c_ULTIMATE.start_main_~end~0#1.offset| 1)))) is different from false [2022-11-18 21:06:14,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:14,733 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 104 treesize of output 95 [2022-11-18 21:06:14,750 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 79 treesize of output 77 [2022-11-18 21:06:14,758 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 77 treesize of output 75 [2022-11-18 21:06:15,492 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 21:06:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044032327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:06:15,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:06:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 36 [2022-11-18 21:06:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466744221] [2022-11-18 21:06:15,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:15,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 21:06:15,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 21:06:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1143, Unknown=1, NotChecked=68, Total=1332 [2022-11-18 21:06:15,495 INFO L87 Difference]: Start difference. First operand 175 states and 188 transitions. Second operand has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:19,521 INFO L93 Difference]: Finished difference Result 247 states and 264 transitions. [2022-11-18 21:06:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:06:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-18 21:06:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:19,523 INFO L225 Difference]: With dead ends: 247 [2022-11-18 21:06:19,524 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 21:06:19,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=396, Invalid=2363, Unknown=1, NotChecked=102, Total=2862 [2022-11-18 21:06:19,526 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 758 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1015 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1615 Invalid, 0 Unknown, 405 Unchecked, 2.3s Time] [2022-11-18 21:06:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 21:06:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 178. [2022-11-18 21:06:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.232258064516129) internal successors, (191), 177 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 21:06:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2022-11-18 21:06:19,532 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 46 [2022-11-18 21:06:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:19,532 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2022-11-18 21:06:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2022-11-18 21:06:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 21:06:19,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:19,534 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:19,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 21:06:19,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:19,737 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:06:19,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1558963792, now seen corresponding path program 1 times [2022-11-18 21:06:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:19,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620753703] [2022-11-18 21:06:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:22,276 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 21:06:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620753703] [2022-11-18 21:06:22,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620753703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529332211] [2022-11-18 21:06:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:22,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:22,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:22,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:06:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:22,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 21:06:22,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:22,568 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 21:06:22,610 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 21:06:22,759 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:06:22,759 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 21:06:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:22,843 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 21:06:22,870 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 21:06:23,081 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:23,082 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 29 treesize of output 30 [2022-11-18 21:06:23,094 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 20 treesize of output 22 [2022-11-18 21:06:23,151 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 21:06:23,291 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 21:06:23,394 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 21:06:23,449 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-18 21:06:23,449 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 21:06:23,527 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 21:06:23,540 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 21:06:23,764 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:23,764 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-11-18 21:06:23,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-18 21:06:23,810 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 21:06:23,928 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 21:06:23,942 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 21:06:24,029 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 21:06:24,034 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 21:06:24,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:24,091 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2157 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2157) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) is different from false [2022-11-18 21:06:24,256 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2155 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem9#1.base| v_ArrVal_2155) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) (forall ((v_ArrVal_2154 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem9#1.base| v_ArrVal_2154) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))))) is different from false [2022-11-18 21:06:24,274 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_2155 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| .cse0 v_ArrVal_2155) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)))) (forall ((v_ArrVal_2154 (Array Int Int))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2154) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)))))) is different from false [2022-11-18 21:06:24,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:24,297 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 21:06:24,304 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 33 treesize of output 25 [2022-11-18 21:06:24,310 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 6 treesize of output 4 [2022-11-18 21:06:25,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:25,500 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 95 treesize of output 80 [2022-11-18 21:06:25,509 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 141 treesize of output 125 [2022-11-18 21:06:25,518 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 117 treesize of output 113 [2022-11-18 21:06:25,820 INFO L321 Elim1Store]: treesize reduction 4, result has 96.9 percent of original size [2022-11-18 21:06:25,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 230 [2022-11-18 21:06:25,855 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 51 treesize of output 41 [2022-11-18 21:06:37,553 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_main_#t~malloc4#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|))) (let ((.cse0 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (= |c_ULTIMATE.start_main_#t~malloc4#1.base| v_arrayElimCell_75) (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store .cse15 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (= ~unnamed1~0~BLACK (select (select (store .cse15 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))))) (.cse6 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (= |c_ULTIMATE.start_main_~list~0#1.base| v_arrayElimCell_75) (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store .cse14 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (= ~unnamed1~0~BLACK (select (select (store .cse14 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))))) (.cse10 (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse8 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (= ~unnamed1~0~BLACK (select (select (store (store .cse13 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (= ~unnamed1~0~BLACK (select (select (store .cse13 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))))) (.cse9 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store .cse12 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (= ~unnamed1~0~BLACK (select (select (store .cse12 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))))) (.cse1 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))) (.cse5 (not .cse2))) (and (or (and .cse0 .cse1) .cse2) (or (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (or (= |c_ULTIMATE.start_main_~list~0#1.base| v_arrayElimCell_75) (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))) .cse5) .cse6 .cse0 (or (and .cse1 (forall ((v_arrayElimCell_75 Int)) (or (= |c_ULTIMATE.start_main_#t~malloc4#1.base| v_arrayElimCell_75) (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (forall ((v_ArrVal_2147 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store .cse7 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))) (= ~unnamed1~0~BLACK (select (select (store .cse7 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))))))) .cse2) (or (and .cse0 .cse1 .cse8 .cse9) .cse10) (or (and .cse6 .cse1 .cse9) .cse10) (or .cse5 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (or (= |c_ULTIMATE.start_main_~list~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))))) (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)))) (or (= |c_ULTIMATE.start_main_~list~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store .cse11 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (= ~unnamed1~0~BLACK (select (select (store .cse11 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))))) (or (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (or (= |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimCell_75) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)))) .cse5) (or (= |c_ULTIMATE.start_main_#t~malloc4#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse10) .cse8 .cse9 (or .cse1 .cse2) (or .cse5 (forall ((v_ArrVal_2144 Int) (v_ArrVal_2149 (Array Int Int)) (v_ArrVal_2147 (Array Int Int)) (v_arrayElimCell_75 Int)) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2144)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_2147) v_arrayElimCell_75 v_ArrVal_2149) |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))))))) is different from false [2022-11-18 21:07:00,438 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:07:00,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:07:00,464 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 21:07:00,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:07:00,479 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 21:07:00,479 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 54 treesize of output 1 [2022-11-18 21:07:00,583 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 21:07:00,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529332211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:00,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:07:00,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 21] total 52 [2022-11-18 21:07:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995226690] [2022-11-18 21:07:00,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 21:07:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:00,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 21:07:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1932, Unknown=20, NotChecked=380, Total=2652 [2022-11-18 21:07:00,587 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 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 21:07:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:04,936 INFO L93 Difference]: Finished difference Result 215 states and 231 transitions. [2022-11-18 21:07:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:07:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 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 49 [2022-11-18 21:07:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:04,938 INFO L225 Difference]: With dead ends: 215 [2022-11-18 21:07:04,939 INFO L226 Difference]: Without dead ends: 215 [2022-11-18 21:07:04,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=501, Invalid=2801, Unknown=20, NotChecked=460, Total=3782 [2022-11-18 21:07:04,941 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 123 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 788 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:04,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 963 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 419 Invalid, 0 Unknown, 788 Unchecked, 0.7s Time] [2022-11-18 21:07:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-18 21:07:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 204. [2022-11-18 21:07:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 203 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:07:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2022-11-18 21:07:04,947 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 49 [2022-11-18 21:07:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2022-11-18 21:07:04,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 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 21:07:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2022-11-18 21:07:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 21:07:04,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:04,949 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, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:04,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 21:07:05,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:05,157 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-18 21:07:05,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash 775361098, now seen corresponding path program 2 times [2022-11-18 21:07:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:05,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104009598] [2022-11-18 21:07:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104009598] [2022-11-18 21:07:06,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104009598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142926534] [2022-11-18 21:07:06,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:07:06,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:06,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:06,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfa28f4-d309-476c-8b35-bdc56aab0fbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:07:07,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:07:07,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:07:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-18 21:07:07,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:07,392 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 21:07:07,583 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:07:07,584 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 21:07:07,671 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 21:07:07,695 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 21:07:07,933 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:07:07,934 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 29 treesize of output 30 [2022-11-18 21:07:07,945 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 21:07:08,197 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:07:08,197 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 21:07:08,215 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 21:07:08,243 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:07:08,244 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 21:07:08,388 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:07:08,389 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 21:07:08,402 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 21:07:08,434 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:07:08,434 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 21:07:09,552 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:07:09,553 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 69 treesize of output 36 [2022-11-18 21:07:09,562 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2022-11-18 21:07:09,714 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 21:07:09,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:10,415 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2299 (Array Int Int))) (or (not (= (select v_ArrVal_2299 |c_ULTIMATE.start_main_~end~0#1.offset|) |c_ULTIMATE.start_main_~null~0#1.offset|)) (forall ((v_ArrVal_2300 (Array Int Int))) (= |c_ULTIMATE.start_main_~null~0#1.offset| (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2299))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2300) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) (forall ((v_ArrVal_2299 (Array Int Int))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2300))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2299) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select v_ArrVal_2300 |c_ULTIMATE.start_main_~end~0#1.offset|))) (not (= (select v_ArrVal_2299 |c_ULTIMATE.start_main_~end~0#1.offset|) |c_ULTIMATE.start_main_~null~0#1.offset|))))) is different from false [2022-11-18 21:07:10,526 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2299 (Array Int Int))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= |c_ULTIMATE.start_main_~null~0#1.offset| (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_2299))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_2300) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (not (= (select v_ArrVal_2299 |c_ULTIMATE.start_main_#t~mem6#1.offset|) |c_ULTIMATE.start_main_~null~0#1.offset|)))) (forall ((v_ArrVal_2299 (Array Int Int))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= (select v_ArrVal_2300 |c_ULTIMATE.start_main_#t~mem6#1.offset|) (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_2300))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_2299) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (not (= (select v_ArrVal_2299 |c_ULTIMATE.start_main_#t~mem6#1.offset|) |c_ULTIMATE.start_main_~null~0#1.offset|))))) is different from false [2022-11-18 21:07:10,566 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_2299 (Array Int Int))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= |c_ULTIMATE.start_main_~null~0#1.offset| (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2299))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2300) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (not (= |c_ULTIMATE.start_main_~null~0#1.offset| (select v_ArrVal_2299 .cse2))))) (forall ((v_ArrVal_2299 (Array Int Int))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= (select v_ArrVal_2300 .cse2) (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2300))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2299) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (not (= |c_ULTIMATE.start_main_~null~0#1.offset| (select v_ArrVal_2299 .cse2))))))) is different from false [2022-11-18 21:07:10,630 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2299 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2296))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (select v_ArrVal_2299 .cse0) |c_ULTIMATE.start_main_~null~0#1.offset|)) (forall ((v_ArrVal_2300 (Array Int Int))) (= (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2295))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (select (let ((.cse1 (store .cse2 .cse3 v_ArrVal_2300))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store .cse4 .cse3 v_ArrVal_2299) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (select v_ArrVal_2300 .cse0))))))) (forall ((v_ArrVal_2299 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2296))) (or (not (= (select v_ArrVal_2299 (select (select .cse5 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) |c_ULTIMATE.start_main_~null~0#1.offset|)) (forall ((v_ArrVal_2300 (Array Int Int))) (= |c_ULTIMATE.start_main_~null~0#1.offset| (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_2295))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse6 (store .cse5 .cse8 v_ArrVal_2299))) (select (select .cse6 (select (select (store .cse7 .cse8 v_ArrVal_2300) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))))))) is different from false [2022-11-18 21:07:10,671 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_2299 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_2296))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= |c_ULTIMATE.start_main_~null~0#1.offset| (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_2295))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse0 (store .cse3 .cse2 v_ArrVal_2299))) (select (select .cse0 (select (select (store .cse1 .cse2 v_ArrVal_2300) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) (not (= |c_ULTIMATE.start_main_~null~0#1.offset| (select v_ArrVal_2299 (select (select .cse3 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))))))) (forall ((v_ArrVal_2299 (Array Int Int)) (v_ArrVal_2296 (Array Int Int)) (v_ArrVal_2295 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_2296))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (forall ((v_ArrVal_2300 (Array Int Int))) (= (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_2295))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (select (let ((.cse5 (store .cse6 .cse7 v_ArrVal_2300))) (select .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store .cse8 .cse7 v_ArrVal_2299) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (select v_ArrVal_2300 .cse9))) (not (= |c_ULTIMATE.start_main_~null~0#1.offset| (select v_ArrVal_2299 .cse9))))))))) is different from false [2022-11-18 21:07:10,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:10,716 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 141 treesize of output 125 [2022-11-18 21:07:10,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:10,727 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 103 treesize of output 72 [2022-11-18 21:07:11,570 INFO L321 Elim1Store]: treesize reduction 154, result has 69.8 percent of original size [2022-11-18 21:07:11,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 2276 treesize of output 1951 [2022-11-18 21:07:11,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:11,712 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 4884 treesize of output 4431 [2022-11-18 21:07:12,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,031 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 4030 treesize of output 3874 [2022-11-18 21:07:12,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,156 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 4030 treesize of output 3882 [2022-11-18 21:07:12,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2946 treesize of output 2682 [2022-11-18 21:07:12,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:12,734 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 3408 treesize of output 3146 [2022-11-18 21:19:04,894 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:19:04,895 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 124 treesize of output 1 [2022-11-18 21:19:05,101 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 21:19:05,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142926534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:19:05,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:19:05,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 18] total 49 [2022-11-18 21:19:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883712665] [2022-11-18 21:19:05,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:19:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 21:19:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:19:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 21:19:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1712, Unknown=5, NotChecked=440, Total=2352 [2022-11-18 21:19:05,103 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 49 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)