./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8 --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 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b --- 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-e04fb08 [2022-11-16 11:51:16,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:51:16,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:51:16,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:51:16,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:51:16,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:51:16,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:51:16,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:51:16,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:51:16,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:51:16,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:51:16,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:51:16,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:51:16,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:51:16,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:51:16,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:51:16,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:51:16,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:51:16,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:51:16,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:51:16,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:51:16,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:51:16,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:51:16,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:51:16,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:51:16,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:51:16,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:51:16,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:51:16,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:51:16,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:51:16,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:51:16,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:51:16,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:51:16,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:51:16,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:51:16,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:51:16,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:51:16,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:51:16,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:51:16,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:51:16,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:51:16,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:51:16,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:51:16,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:51:16,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:51:16,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:51:16,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:51:16,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:51:16,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:51:16,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:51:16,864 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:51:16,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:51:16,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:51:16,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:51:16,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:51:16,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:51:16,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:51:16,867 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:51:16,867 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:51:16,867 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:51:16,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:51:16,867 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:51:16,868 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:51:16,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:51:16,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:51:16,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:51:16,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:51:16,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:16,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:51:16,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:51:16,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:51:16,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:51:16,872 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b [2022-11-16 11:51:17,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:51:17,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:51:17,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:51:17,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:51:17,243 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:51:17,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2022-11-16 11:51:17,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/data/564a21cbc/0ab3b58b2ef644d5b588d167d793729e/FLAG05bb0ad8b [2022-11-16 11:51:17,957 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:51:17,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i [2022-11-16 11:51:17,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/data/564a21cbc/0ab3b58b2ef644d5b588d167d793729e/FLAG05bb0ad8b [2022-11-16 11:51:18,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/data/564a21cbc/0ab3b58b2ef644d5b588d167d793729e [2022-11-16 11:51:18,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:51:18,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:51:18,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:18,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:51:18,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:51:18,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:18,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444d9b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18, skipping insertion in model container [2022-11-16 11:51:18,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:18,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:51:18,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:51:18,750 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2022-11-16 11:51:18,767 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2022-11-16 11:51:18,770 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2022-11-16 11:51:18,772 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2022-11-16 11:51:18,776 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2022-11-16 11:51:18,780 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2022-11-16 11:51:18,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:18,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:51:18,860 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2022-11-16 11:51:18,863 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2022-11-16 11:51:18,866 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2022-11-16 11:51:18,869 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2022-11-16 11:51:18,872 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2022-11-16 11:51:18,878 WARN L229 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_e1acfbd9-649f-4944-9d07-16307c0c7e6c/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2022-11-16 11:51:18,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:18,914 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:51:18,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18 WrapperNode [2022-11-16 11:51:18,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:18,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:18,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:51:18,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:51:18,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:18,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:18,988 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2022-11-16 11:51:18,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:18,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:51:18,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:51:18,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:51:19,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:51:19,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:51:19,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:51:19,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:51:19,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (1/1) ... [2022-11-16 11:51:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:19,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:19,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:51:19,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:51:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:51:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:51:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:51:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:51:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:51:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:51:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:51:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:51:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:51:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:51:19,346 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:51:19,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:51:19,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:51:19,823 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:51:19,823 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 11:51:19,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:19 BoogieIcfgContainer [2022-11-16 11:51:19,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:51:19,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:51:19,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:51:19,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:51:19,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:51:18" (1/3) ... [2022-11-16 11:51:19,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c48862f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:19, skipping insertion in model container [2022-11-16 11:51:19,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:18" (2/3) ... [2022-11-16 11:51:19,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c48862f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:19, skipping insertion in model container [2022-11-16 11:51:19,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:19" (3/3) ... [2022-11-16 11:51:19,849 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2022-11-16 11:51:19,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:51:19,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-16 11:51:19,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:51:20,002 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;@7cd9e884, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:51:20,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-11-16 11:51:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 64 states have (on average 2.21875) internal successors, (142), 118 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:51:20,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:20,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:51:20,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:20,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-16 11:51:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:20,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802980570] [2022-11-16 11:51:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:20,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802980570] [2022-11-16 11:51:20,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802980570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:20,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:20,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:51:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537450148] [2022-11-16 11:51:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:20,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:20,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:20,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:20,429 INFO L87 Difference]: Start difference. First operand has 119 states, 64 states have (on average 2.21875) internal successors, (142), 118 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-16 11:51:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:20,655 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-11-16 11:51:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:20,658 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 [2022-11-16 11:51:20,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:20,681 INFO L225 Difference]: With dead ends: 137 [2022-11-16 11:51:20,681 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 11:51:20,684 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 [2022-11-16 11:51:20,691 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 94 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:20,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 97 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:51:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 11:51:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2022-11-16 11:51:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 63 states have (on average 1.8571428571428572) internal successors, (117), 114 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2022-11-16 11:51:20,745 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 3 [2022-11-16 11:51:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:20,746 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2022-11-16 11:51:20,746 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) [2022-11-16 11:51:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2022-11-16 11:51:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:51:20,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:20,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:51:20,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:51:20,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-16 11:51:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:20,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324468679] [2022-11-16 11:51:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:20,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:20,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324468679] [2022-11-16 11:51:20,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324468679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:20,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:20,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:51:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672394226] [2022-11-16 11:51:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:20,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:20,895 INFO L87 Difference]: Start difference. First operand 115 states and 117 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) [2022-11-16 11:51:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:21,022 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2022-11-16 11:51:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:51:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:21,024 INFO L225 Difference]: With dead ends: 141 [2022-11-16 11:51:21,024 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 11:51:21,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:21,026 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:21,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 99 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 11:51:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2022-11-16 11:51:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 63 states have (on average 1.8253968253968254) internal successors, (115), 112 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2022-11-16 11:51:21,035 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 3 [2022-11-16 11:51:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:21,035 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2022-11-16 11:51:21,035 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) [2022-11-16 11:51:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2022-11-16 11:51:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:51:21,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:21,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:51:21,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 59263631, now seen corresponding path program 1 times [2022-11-16 11:51:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883671610] [2022-11-16 11:51:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:21,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:21,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883671610] [2022-11-16 11:51:21,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883671610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:21,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:21,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629402534] [2022-11-16 11:51:21,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:21,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:21,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:21,160 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:21,365 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2022-11-16 11:51:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:51:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 11:51:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:21,367 INFO L225 Difference]: With dead ends: 119 [2022-11-16 11:51:21,367 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 11:51:21,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:21,369 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 168 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:21,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 68 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:51:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 11:51:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 102. [2022-11-16 11:51:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2022-11-16 11:51:21,376 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 8 [2022-11-16 11:51:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:21,376 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2022-11-16 11:51:21,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2022-11-16 11:51:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:51:21,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:21,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:51:21,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash 59263632, now seen corresponding path program 1 times [2022-11-16 11:51:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:21,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028943063] [2022-11-16 11:51:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:21,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028943063] [2022-11-16 11:51:21,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028943063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:21,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:21,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238427179] [2022-11-16 11:51:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:21,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:21,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:21,598 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:21,926 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2022-11-16 11:51:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 11:51:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:21,928 INFO L225 Difference]: With dead ends: 184 [2022-11-16 11:51:21,928 INFO L226 Difference]: Without dead ends: 184 [2022-11-16 11:51:21,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:21,929 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 195 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:21,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 104 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:51:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-16 11:51:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 133. [2022-11-16 11:51:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 96 states have (on average 1.5) internal successors, (144), 132 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2022-11-16 11:51:21,941 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 8 [2022-11-16 11:51:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:21,942 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2022-11-16 11:51:21,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2022-11-16 11:51:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:51:21,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:21,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:51:21,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2022-11-16 11:51:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:21,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669994719] [2022-11-16 11:51:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:22,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:22,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669994719] [2022-11-16 11:51:22,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669994719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:22,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:22,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:51:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214172999] [2022-11-16 11:51:22,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:22,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:22,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:22,154 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:22,440 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2022-11-16 11:51:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:51:22,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:51:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:22,442 INFO L225 Difference]: With dead ends: 132 [2022-11-16 11:51:22,443 INFO L226 Difference]: Without dead ends: 132 [2022-11-16 11:51:22,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:51:22,445 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 64 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:22,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 221 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:51:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-16 11:51:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-16 11:51:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 131 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2022-11-16 11:51:22,454 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 12 [2022-11-16 11:51:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:22,455 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2022-11-16 11:51:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2022-11-16 11:51:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:51:22,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:22,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:22,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:51:22,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2022-11-16 11:51:22,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:22,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697145332] [2022-11-16 11:51:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:22,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:22,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697145332] [2022-11-16 11:51:22,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697145332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:22,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:22,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:51:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68259012] [2022-11-16 11:51:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:22,714 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:23,057 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2022-11-16 11:51:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:51:23,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 11:51:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:23,059 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:51:23,059 INFO L226 Difference]: Without dead ends: 131 [2022-11-16 11:51:23,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:23,060 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:23,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 302 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:51:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-16 11:51:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2022-11-16 11:51:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-11-16 11:51:23,073 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 12 [2022-11-16 11:51:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:23,074 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-11-16 11:51:23,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-11-16 11:51:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:51:23,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:23,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:23,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:51:23,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:23,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash 763856048, now seen corresponding path program 1 times [2022-11-16 11:51:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:23,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665870016] [2022-11-16 11:51:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:23,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665870016] [2022-11-16 11:51:23,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665870016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:23,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:23,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:51:23,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204410133] [2022-11-16 11:51:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:51:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:51:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:23,273 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:23,420 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2022-11-16 11:51:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:51:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:51:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:23,422 INFO L225 Difference]: With dead ends: 115 [2022-11-16 11:51:23,422 INFO L226 Difference]: Without dead ends: 115 [2022-11-16 11:51:23,422 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 [2022-11-16 11:51:23,425 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 5 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:23,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 244 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-16 11:51:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-16 11:51:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.4534883720930232) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2022-11-16 11:51:23,452 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 13 [2022-11-16 11:51:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:23,454 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2022-11-16 11:51:23,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2022-11-16 11:51:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:51:23,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:23,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:51:23,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash 763856049, now seen corresponding path program 1 times [2022-11-16 11:51:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:23,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583150854] [2022-11-16 11:51:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:23,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:23,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583150854] [2022-11-16 11:51:23,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583150854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:23,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:23,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:51:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585285303] [2022-11-16 11:51:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:51:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:51:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:23,718 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:23,870 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2022-11-16 11:51:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:51:23,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:51:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:23,873 INFO L225 Difference]: With dead ends: 114 [2022-11-16 11:51:23,873 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 11:51:23,874 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 [2022-11-16 11:51:23,876 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 3 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:23,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 246 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 11:51:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-16 11:51:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 86 states have (on average 1.441860465116279) internal successors, (124), 113 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2022-11-16 11:51:23,895 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 13 [2022-11-16 11:51:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:23,895 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2022-11-16 11:51:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2022-11-16 11:51:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:51:23,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:23,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:23,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:51:23,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2113337263, now seen corresponding path program 1 times [2022-11-16 11:51:23,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:23,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845297906] [2022-11-16 11:51:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:24,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:24,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845297906] [2022-11-16 11:51:24,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845297906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:24,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:24,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:51:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037518376] [2022-11-16 11:51:24,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:24,051 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:24,268 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2022-11-16 11:51:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:51:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 11:51:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:24,270 INFO L225 Difference]: With dead ends: 125 [2022-11-16 11:51:24,270 INFO L226 Difference]: Without dead ends: 125 [2022-11-16 11:51:24,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:24,271 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 16 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:24,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 366 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-16 11:51:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2022-11-16 11:51:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 111 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2022-11-16 11:51:24,277 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 14 [2022-11-16 11:51:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:24,278 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2022-11-16 11:51:24,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2022-11-16 11:51:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:51:24,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:24,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:51:24,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1298827700, now seen corresponding path program 1 times [2022-11-16 11:51:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:24,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594761531] [2022-11-16 11:51:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:24,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594761531] [2022-11-16 11:51:24,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594761531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:24,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:24,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:51:24,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395946327] [2022-11-16 11:51:24,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:24,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:24,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:24,367 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-16 11:51:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:24,514 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2022-11-16 11:51:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:51:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2022-11-16 11:51:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:24,517 INFO L225 Difference]: With dead ends: 168 [2022-11-16 11:51:24,517 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 11:51:24,517 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 [2022-11-16 11:51:24,518 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 167 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 131 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 11:51:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 110. [2022-11-16 11:51:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4285714285714286) internal successors, (120), 109 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-11-16 11:51:24,524 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 16 [2022-11-16 11:51:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:24,525 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-11-16 11:51:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-16 11:51:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-11-16 11:51:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:51:24,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:24,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:24,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:51:24,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1685750883, now seen corresponding path program 1 times [2022-11-16 11:51:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:24,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375063208] [2022-11-16 11:51:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:24,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375063208] [2022-11-16 11:51:24,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375063208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:24,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:24,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:51:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225376257] [2022-11-16 11:51:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:51:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:51:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:24,634 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:24,791 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-11-16 11:51:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:51:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:51:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:24,793 INFO L225 Difference]: With dead ends: 108 [2022-11-16 11:51:24,793 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 11:51:24,794 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 [2022-11-16 11:51:24,794 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:24,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 218 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 11:51:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-16 11:51:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 107 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2022-11-16 11:51:24,798 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 21 [2022-11-16 11:51:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:24,798 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2022-11-16 11:51:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-11-16 11:51:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:51:24,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:24,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:51:24,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1685783654, now seen corresponding path program 1 times [2022-11-16 11:51:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:24,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746864802] [2022-11-16 11:51:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746864802] [2022-11-16 11:51:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746864802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:25,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:25,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 11:51:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231336541] [2022-11-16 11:51:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:51:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:51:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:51:25,807 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:26,739 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2022-11-16 11:51:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:51:26,740 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 11:51:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:26,741 INFO L225 Difference]: With dead ends: 215 [2022-11-16 11:51:26,741 INFO L226 Difference]: Without dead ends: 215 [2022-11-16 11:51:26,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:51:26,742 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 291 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:26,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 415 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:51:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-16 11:51:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 121. [2022-11-16 11:51:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-11-16 11:51:26,747 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 21 [2022-11-16 11:51:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:26,748 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-11-16 11:51:26,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-11-16 11:51:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:51:26,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:26,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:26,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:51:26,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash -843990961, now seen corresponding path program 1 times [2022-11-16 11:51:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:26,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447341268] [2022-11-16 11:51:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:27,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447341268] [2022-11-16 11:51:27,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447341268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:27,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:27,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:51:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105985016] [2022-11-16 11:51:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:51:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:51:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:51:27,137 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:27,684 INFO L93 Difference]: Finished difference Result 172 states and 177 transitions. [2022-11-16 11:51:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:51:27,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:51:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:27,685 INFO L225 Difference]: With dead ends: 172 [2022-11-16 11:51:27,685 INFO L226 Difference]: Without dead ends: 172 [2022-11-16 11:51:27,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:51:27,686 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 228 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:27,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 266 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:51:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-16 11:51:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 127. [2022-11-16 11:51:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 126 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2022-11-16 11:51:27,690 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 24 [2022-11-16 11:51:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:27,691 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2022-11-16 11:51:27,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2022-11-16 11:51:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:51:27,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:27,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:27,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:51:27,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash -843990960, now seen corresponding path program 1 times [2022-11-16 11:51:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873464084] [2022-11-16 11:51:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873464084] [2022-11-16 11:51:28,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873464084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:28,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:28,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:51:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340887552] [2022-11-16 11:51:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:28,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:51:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:51:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:51:28,138 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:28,725 INFO L93 Difference]: Finished difference Result 204 states and 208 transitions. [2022-11-16 11:51:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:51:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:51:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:28,727 INFO L225 Difference]: With dead ends: 204 [2022-11-16 11:51:28,727 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 11:51:28,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:51:28,728 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 177 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:28,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 318 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:51:28,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 11:51:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2022-11-16 11:51:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2022-11-16 11:51:28,733 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 24 [2022-11-16 11:51:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:28,733 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2022-11-16 11:51:28,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2022-11-16 11:51:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 11:51:28,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:28,735 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] [2022-11-16 11:51:28,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:51:28,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:28,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 673509455, now seen corresponding path program 1 times [2022-11-16 11:51:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:28,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839617706] [2022-11-16 11:51:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839617706] [2022-11-16 11:51:29,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839617706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:29,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:29,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:51:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909615370] [2022-11-16 11:51:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:29,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:51:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:51:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:51:29,446 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2022-11-16 11:51:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:30,241 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2022-11-16 11:51:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:51:30,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 [2022-11-16 11:51:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:30,242 INFO L225 Difference]: With dead ends: 202 [2022-11-16 11:51:30,242 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 11:51:30,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:51:30,243 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 307 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:30,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 397 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:51:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 11:51:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2022-11-16 11:51:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 127 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2022-11-16 11:51:30,247 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 26 [2022-11-16 11:51:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:30,248 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2022-11-16 11:51:30,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2022-11-16 11:51:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2022-11-16 11:51:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:51:30,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:30,249 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] [2022-11-16 11:51:30,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:51:30,249 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1451405621, now seen corresponding path program 1 times [2022-11-16 11:51:30,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:30,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535584568] [2022-11-16 11:51:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:30,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:31,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:31,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535584568] [2022-11-16 11:51:31,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535584568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:31,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730087547] [2022-11-16 11:51:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:31,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:31,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:31,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:51:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:31,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 11:51:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:31,512 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 [2022-11-16 11:51:31,528 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 [2022-11-16 11:51:31,630 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:31,631 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 [2022-11-16 11:51:31,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:31,673 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 [2022-11-16 11:51:31,686 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 [2022-11-16 11:51:31,760 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 [2022-11-16 11:51:31,796 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 [2022-11-16 11:51:31,856 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 [2022-11-16 11:51:31,886 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:31,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:51:31,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:51:31,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:51:31,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:51:32,002 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 [2022-11-16 11:51:32,083 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 [2022-11-16 11:51:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:32,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:32,153 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2022-11-16 11:51:32,167 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2022-11-16 11:51:32,200 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_471 (Array Int Int)) (v_ArrVal_473 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_471) |c_ULTIMATE.start_main_#t~malloc5#1.base| v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2022-11-16 11:51:32,486 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:51:32,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 11:51:32,697 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_6| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_51| Int) (v_ArrVal_471 (Array Int Int)) (v_ArrVal_473 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc5#1.base_6| Int)) (or (= |v_ULTIMATE.start_main_#t~malloc5#1.base_6| |c_ULTIMATE.start_main_~head~0#1.base|) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_51| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_6|) 0)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_51| v_ArrVal_464)) |v_ULTIMATE.start_main_#t~malloc3#1.base_6| v_ArrVal_471) |v_ULTIMATE.start_main_#t~malloc5#1.base_6| v_ArrVal_473) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0))) is different from false [2022-11-16 11:51:32,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:32,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:32,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-16 11:51:32,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:32,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 11:51:32,739 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 [2022-11-16 11:51:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:32,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730087547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:32,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:32,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-11-16 11:51:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764883573] [2022-11-16 11:51:32,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:51:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:51:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=489, Unknown=10, NotChecked=196, Total=812 [2022-11-16 11:51:32,783 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:34,210 INFO L93 Difference]: Finished difference Result 255 states and 265 transitions. [2022-11-16 11:51:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:51:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-16 11:51:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:34,212 INFO L225 Difference]: With dead ends: 255 [2022-11-16 11:51:34,212 INFO L226 Difference]: Without dead ends: 255 [2022-11-16 11:51:34,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=314, Invalid=1173, Unknown=11, NotChecked=308, Total=1806 [2022-11-16 11:51:34,214 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 395 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1183 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:34,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 862 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 784 Invalid, 0 Unknown, 1183 Unchecked, 0.7s Time] [2022-11-16 11:51:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-16 11:51:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 150. [2022-11-16 11:51:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 125 states have (on average 1.296) internal successors, (162), 149 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2022-11-16 11:51:34,222 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 30 [2022-11-16 11:51:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:34,223 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2022-11-16 11:51:34,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 29 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2022-11-16 11:51:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 11:51:34,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:34,227 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] [2022-11-16 11:51:34,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:51:34,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:34,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash -472325846, now seen corresponding path program 1 times [2022-11-16 11:51:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:34,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4084839] [2022-11-16 11:51:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:34,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4084839] [2022-11-16 11:51:34,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4084839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:34,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:34,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:51:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245276979] [2022-11-16 11:51:34,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:51:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:51:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:34,536 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2022-11-16 11:51:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:34,679 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2022-11-16 11:51:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:51:34,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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 [2022-11-16 11:51:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:34,681 INFO L225 Difference]: With dead ends: 148 [2022-11-16 11:51:34,681 INFO L226 Difference]: Without dead ends: 148 [2022-11-16 11:51:34,681 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 [2022-11-16 11:51:34,682 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 22 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:34,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 193 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-16 11:51:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-16 11:51:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 1.282258064516129) internal successors, (159), 147 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) [2022-11-16 11:51:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2022-11-16 11:51:34,687 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 32 [2022-11-16 11:51:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:34,689 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2022-11-16 11:51:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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) [2022-11-16 11:51:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2022-11-16 11:51:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:51:34,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:34,695 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] [2022-11-16 11:51:34,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:51:34,696 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:34,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1755815806, now seen corresponding path program 1 times [2022-11-16 11:51:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:34,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410696622] [2022-11-16 11:51:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410696622] [2022-11-16 11:51:34,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410696622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:34,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:34,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796860712] [2022-11-16 11:51:34,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:34,819 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 4 states, 3 states have (on average 11.0) 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) [2022-11-16 11:51:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:34,966 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2022-11-16 11:51:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) 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 [2022-11-16 11:51:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:34,968 INFO L225 Difference]: With dead ends: 157 [2022-11-16 11:51:34,968 INFO L226 Difference]: Without dead ends: 157 [2022-11-16 11:51:34,968 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 [2022-11-16 11:51:34,969 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 122 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:34,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:51:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-16 11:51:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2022-11-16 11:51:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 149 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) [2022-11-16 11:51:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2022-11-16 11:51:34,974 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 33 [2022-11-16 11:51:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:34,974 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2022-11-16 11:51:34,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) 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) [2022-11-16 11:51:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2022-11-16 11:51:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:51:34,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:34,977 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:34,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:51:34,977 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash 416851232, now seen corresponding path program 1 times [2022-11-16 11:51:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914353236] [2022-11-16 11:51:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:35,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914353236] [2022-11-16 11:51:35,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914353236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:35,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610839702] [2022-11-16 11:51:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:35,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:51:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:35,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 11:51:35,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:35,863 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 [2022-11-16 11:51:35,972 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:35,973 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 [2022-11-16 11:51:36,030 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 [2022-11-16 11:51:36,214 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:36,215 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 [2022-11-16 11:51:36,284 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:36,284 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 [2022-11-16 11:51:36,311 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:36,312 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 [2022-11-16 11:51:36,363 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 11:51:36,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-16 11:51:36,521 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:51:36,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2022-11-16 11:51:36,537 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 16 treesize of output 12 [2022-11-16 11:51:36,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:36,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:36,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-11-16 11:51:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:36,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:37,040 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2022-11-16 11:51:37,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 11:51:37,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:37,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-16 11:51:37,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:37,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:51:37,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:37,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 71 [2022-11-16 11:51:37,719 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 56 treesize of output 52 [2022-11-16 11:51:37,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:37,744 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 60 treesize of output 56 [2022-11-16 11:51:37,762 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:51:37,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 11:51:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:38,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610839702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:38,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:38,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 37 [2022-11-16 11:51:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404122319] [2022-11-16 11:51:38,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 11:51:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 11:51:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1263, Unknown=11, NotChecked=0, Total=1406 [2022-11-16 11:51:38,266 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:39,937 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2022-11-16 11:51:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:51:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2022-11-16 11:51:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:39,939 INFO L225 Difference]: With dead ends: 243 [2022-11-16 11:51:39,939 INFO L226 Difference]: Without dead ends: 243 [2022-11-16 11:51:39,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=377, Invalid=2474, Unknown=11, NotChecked=0, Total=2862 [2022-11-16 11:51:39,941 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 351 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:39,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1087 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1288 Invalid, 0 Unknown, 810 Unchecked, 0.9s Time] [2022-11-16 11:51:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-16 11:51:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 156. [2022-11-16 11:51:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2727272727272727) internal successors, (168), 155 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) [2022-11-16 11:51:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2022-11-16 11:51:39,946 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 33 [2022-11-16 11:51:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:39,946 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2022-11-16 11:51:39,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2022-11-16 11:51:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:51:39,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:39,949 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:39,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:51:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:40,155 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 416851233, now seen corresponding path program 1 times [2022-11-16 11:51:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:40,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441265278] [2022-11-16 11:51:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441265278] [2022-11-16 11:51:41,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441265278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:41,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638953519] [2022-11-16 11:51:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:41,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:41,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:41,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:51:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 11:51:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:41,290 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 [2022-11-16 11:51:41,403 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:51:41,405 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 [2022-11-16 11:51:41,464 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 [2022-11-16 11:51:41,478 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 [2022-11-16 11:51:41,707 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:41,709 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 [2022-11-16 11:51:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:41,731 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 [2022-11-16 11:51:41,909 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:41,909 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 [2022-11-16 11:51:41,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:41,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:51:41,967 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-16 11:51:41,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 11:51:41,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:51:42,066 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 11:51:42,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-16 11:51:42,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:51:42,326 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-16 11:51:42,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2022-11-16 11:51:42,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 11:51:42,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:42,744 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 11:51:42,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 26 [2022-11-16 11:51:42,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:42,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:51:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:42,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:43,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:43,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-11-16 11:51:44,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:44,478 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 142 treesize of output 146 [2022-11-16 11:51:44,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-11-16 11:51:45,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:45,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:51:45,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:45,897 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 138 treesize of output 137 [2022-11-16 11:51:45,907 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 122 treesize of output 118 [2022-11-16 11:51:45,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-16 11:51:46,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:51:46,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 71 [2022-11-16 11:51:46,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 11:51:46,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-16 11:51:46,228 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-16 11:51:46,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,242 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 81 treesize of output 84 [2022-11-16 11:51:46,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,257 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 77 treesize of output 65 [2022-11-16 11:51:46,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-16 11:51:46,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2022-11-16 11:51:46,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:46,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:46,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:51:46,427 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 9 treesize of output 7 [2022-11-16 11:51:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:47,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638953519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:47,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:47,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 16] total 41 [2022-11-16 11:51:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763426677] [2022-11-16 11:51:47,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:47,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 11:51:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 11:51:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1557, Unknown=16, NotChecked=0, Total=1722 [2022-11-16 11:51:47,238 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:49,597 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2022-11-16 11:51:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:51:49,598 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 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 [2022-11-16 11:51:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:49,599 INFO L225 Difference]: With dead ends: 192 [2022-11-16 11:51:49,599 INFO L226 Difference]: Without dead ends: 192 [2022-11-16 11:51:49,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=412, Invalid=3112, Unknown=16, NotChecked=0, Total=3540 [2022-11-16 11:51:49,601 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 332 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1091 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1200 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1057 Invalid, 0 Unknown, 1091 Unchecked, 0.9s Time] [2022-11-16 11:51:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-16 11:51:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 153. [2022-11-16 11:51:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 152 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) [2022-11-16 11:51:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2022-11-16 11:51:49,606 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 33 [2022-11-16 11:51:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:49,606 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2022-11-16 11:51:49,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.317073170731707) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2022-11-16 11:51:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:51:49,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:49,608 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:49,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:49,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:49,815 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1393105246, now seen corresponding path program 1 times [2022-11-16 11:51:49,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:49,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716546148] [2022-11-16 11:51:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:49,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716546148] [2022-11-16 11:51:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716546148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158946932] [2022-11-16 11:51:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:50,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:50,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:51:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 11:51:50,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:50,671 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 [2022-11-16 11:51:50,767 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:50,768 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 [2022-11-16 11:51:50,809 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 [2022-11-16 11:51:50,963 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:50,964 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 [2022-11-16 11:51:51,031 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:51,031 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 [2022-11-16 11:51:51,061 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:51:51,061 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 [2022-11-16 11:51:51,125 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 11:51:51,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-16 11:51:51,288 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 11:51:51,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2022-11-16 11:51:51,298 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 16 treesize of output 12 [2022-11-16 11:51:51,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:51,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:51,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-11-16 11:51:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:51,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:51,793 INFO L321 Elim1Store]: treesize reduction 5, result has 78.3 percent of original size [2022-11-16 11:51:51,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-16 11:51:51,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:51,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-11-16 11:51:52,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:52,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:51:52,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:52,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 71 [2022-11-16 11:51:52,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:52,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 11:51:52,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-16 11:51:52,427 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:51:52,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 11:51:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:52,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158946932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:52,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:52,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 39 [2022-11-16 11:51:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179446235] [2022-11-16 11:51:52,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 11:51:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 11:51:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1410, Unknown=12, NotChecked=0, Total=1560 [2022-11-16 11:51:52,856 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:54,916 INFO L93 Difference]: Finished difference Result 228 states and 238 transitions. [2022-11-16 11:51:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:51:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2022-11-16 11:51:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:54,918 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:51:54,918 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 11:51:54,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=436, Invalid=2974, Unknown=12, NotChecked=0, Total=3422 [2022-11-16 11:51:54,921 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 569 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 872 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:54,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1336 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1536 Invalid, 0 Unknown, 872 Unchecked, 1.2s Time] [2022-11-16 11:51:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 11:51:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 157. [2022-11-16 11:51:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 156 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2022-11-16 11:51:54,925 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 33 [2022-11-16 11:51:54,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:54,926 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2022-11-16 11:51:54,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2022-11-16 11:51:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:51:54,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:54,927 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:54,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:51:55,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:55,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:51:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1393105247, now seen corresponding path program 1 times [2022-11-16 11:51:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:55,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828851911] [2022-11-16 11:51:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:56,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828851911] [2022-11-16 11:51:56,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828851911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:56,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841360697] [2022-11-16 11:51:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:56,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:56,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:51:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:56,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 11:51:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:56,408 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 [2022-11-16 11:51:56,521 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:51:56,522 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 [2022-11-16 11:51:56,592 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 [2022-11-16 11:51:56,602 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 [2022-11-16 11:51:56,820 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:56,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-16 11:51:56,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:56,838 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 [2022-11-16 11:51:57,018 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:51:57,018 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 [2022-11-16 11:51:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:57,042 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 [2022-11-16 11:51:57,078 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:51:57,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:51:57,109 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-16 11:51:57,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 11:51:57,214 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 11:51:57,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-16 11:51:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:51:57,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:51:57,457 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-16 11:51:57,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 63 [2022-11-16 11:51:57,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 11:51:57,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:57,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:51:57,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:51:57,816 INFO L321 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2022-11-16 11:51:57,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 29 [2022-11-16 11:51:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:57,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:59,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:59,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-11-16 11:51:59,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:51:59,496 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 142 treesize of output 146 [2022-11-16 11:51:59,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-11-16 11:52:00,195 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_4 Int) (v_prenex_5 (Array Int Int)) (v_prenex_6 (Array Int Int)) (v_arrayElimCell_118 Int)) (or (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_prenex_5) v_arrayElimCell_118 v_prenex_6) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4) 1) (not (<= 0 v_prenex_4)) (not (= 0 (select |c_#valid| v_arrayElimCell_118))))) (forall ((|v_ULTIMATE.start_main_#t~malloc5#1.base_18| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_73| Int) (v_ArrVal_971 (Array Int Int)) (v_ArrVal_973 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_73| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_73|)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_971) |v_ULTIMATE.start_main_#t~malloc5#1.base_18| v_ArrVal_973) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_73|) 4)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc5#1.base_18|) 0)))) (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_arrayElimArr_11 (Array Int Int)) (v_prenex_4 Int) (v_ArrVal_972 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_11 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_arrayElimArr_11) .cse0 v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4))) (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 v_prenex_4))))))) (forall ((|ULTIMATE.start_main_~x~0#1.offset| Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_arrayElimArr_11 (Array Int Int)) (v_prenex_4 Int) (v_ArrVal_972 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_11 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select |c_#valid| .cse1) 0)) (not (<= v_prenex_4 |c_ULTIMATE.start_main_~head~0#1.offset|)) (= |c_ULTIMATE.start_main_#t~mem4#1.base| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_arrayElimArr_11) .cse1 v_ArrVal_972) |c_ULTIMATE.start_main_~head~0#1.base|) v_prenex_4)) (not (<= 0 v_prenex_4)))))))) is different from false [2022-11-16 11:52:00,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:00,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:52:00,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:00,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 71 [2022-11-16 11:52:00,717 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 56 treesize of output 52 [2022-11-16 11:52:00,731 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:00,732 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 60 treesize of output 56 [2022-11-16 11:52:01,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-16 11:52:01,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,023 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 81 treesize of output 84 [2022-11-16 11:52:01,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,039 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 77 treesize of output 65 [2022-11-16 11:52:01,047 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 50 treesize of output 46 [2022-11-16 11:52:01,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2022-11-16 11:52:01,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:01,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:52:01,202 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 9 treesize of output 7 [2022-11-16 11:52:01,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:52:01,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:01,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:01,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2022-11-16 11:52:01,292 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 9 [2022-11-16 11:52:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:02,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841360697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:02,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:02,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 45 [2022-11-16 11:52:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893682585] [2022-11-16 11:52:02,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:02,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 11:52:02,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:02,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 11:52:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1812, Unknown=13, NotChecked=86, Total=2070 [2022-11-16 11:52:02,169 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:05,543 INFO L93 Difference]: Finished difference Result 223 states and 236 transitions. [2022-11-16 11:52:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:52:05,544 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 11:52:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:05,545 INFO L225 Difference]: With dead ends: 223 [2022-11-16 11:52:05,545 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 11:52:05,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=508, Invalid=4039, Unknown=13, NotChecked=132, Total=4692 [2022-11-16 11:52:05,547 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 506 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1121 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:05,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1450 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1330 Invalid, 0 Unknown, 1121 Unchecked, 1.1s Time] [2022-11-16 11:52:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 11:52:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 156. [2022-11-16 11:52:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 135 states have (on average 1.237037037037037) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2022-11-16 11:52:05,552 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 33 [2022-11-16 11:52:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:05,552 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2022-11-16 11:52:05,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2022-11-16 11:52:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 11:52:05,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:05,553 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] [2022-11-16 11:52:05,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:05,760 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1361528144, now seen corresponding path program 1 times [2022-11-16 11:52:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:05,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723464628] [2022-11-16 11:52:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:06,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723464628] [2022-11-16 11:52:06,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723464628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:06,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:06,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:52:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432942181] [2022-11-16 11:52:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:06,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:52:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:52:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:52:06,083 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:06,585 INFO L93 Difference]: Finished difference Result 224 states and 232 transitions. [2022-11-16 11:52:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:52:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2022-11-16 11:52:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:06,586 INFO L225 Difference]: With dead ends: 224 [2022-11-16 11:52:06,586 INFO L226 Difference]: Without dead ends: 224 [2022-11-16 11:52:06,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:52:06,587 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 154 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:06,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 365 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:52:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-16 11:52:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 165. [2022-11-16 11:52:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 164 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) [2022-11-16 11:52:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2022-11-16 11:52:06,592 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 34 [2022-11-16 11:52:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:06,593 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2022-11-16 11:52:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2022-11-16 11:52:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:52:06,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:06,594 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] [2022-11-16 11:52:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:52:06,594 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash -742300245, now seen corresponding path program 1 times [2022-11-16 11:52:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:06,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006159211] [2022-11-16 11:52:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:06,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:06,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:06,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006159211] [2022-11-16 11:52:06,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006159211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:06,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:06,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:52:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87563393] [2022-11-16 11:52:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:52:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:52:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:52:06,968 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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) [2022-11-16 11:52:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:07,441 INFO L93 Difference]: Finished difference Result 223 states and 231 transitions. [2022-11-16 11:52:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:52:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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 [2022-11-16 11:52:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:07,443 INFO L225 Difference]: With dead ends: 223 [2022-11-16 11:52:07,443 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 11:52:07,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:52:07,444 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 211 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:07,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 283 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:52:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 11:52:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 166. [2022-11-16 11:52:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 165 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) [2022-11-16 11:52:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2022-11-16 11:52:07,448 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 35 [2022-11-16 11:52:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:07,449 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2022-11-16 11:52:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 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) [2022-11-16 11:52:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2022-11-16 11:52:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:52:07,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:07,450 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] [2022-11-16 11:52:07,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:52:07,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 583164820, now seen corresponding path program 1 times [2022-11-16 11:52:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:07,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829762007] [2022-11-16 11:52:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829762007] [2022-11-16 11:52:07,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829762007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:07,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163283382] [2022-11-16 11:52:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:07,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:07,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:07,711 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:07,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:52:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:07,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 11:52:07,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:08,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:08,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-16 11:52:08,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:08,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:08,291 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 28 treesize of output 19 [2022-11-16 11:52:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:08,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:08,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:08,392 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 34 treesize of output 38 [2022-11-16 11:52:08,508 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-16 11:52:08,508 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 45 treesize of output 36 [2022-11-16 11:52:08,521 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-16 11:52:08,523 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 22 treesize of output 14 [2022-11-16 11:52:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:08,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163283382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:08,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:08,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2022-11-16 11:52:08,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155445183] [2022-11-16 11:52:08,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:08,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:52:08,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:52:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:52:08,641 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:09,182 INFO L93 Difference]: Finished difference Result 220 states and 229 transitions. [2022-11-16 11:52:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:52:09,183 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-16 11:52:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:09,184 INFO L225 Difference]: With dead ends: 220 [2022-11-16 11:52:09,184 INFO L226 Difference]: Without dead ends: 220 [2022-11-16 11:52:09,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:52:09,185 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 274 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:09,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 517 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 422 Invalid, 0 Unknown, 91 Unchecked, 0.4s Time] [2022-11-16 11:52:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-16 11:52:09,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 185. [2022-11-16 11:52:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.2378048780487805) internal successors, (203), 184 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2022-11-16 11:52:09,190 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 35 [2022-11-16 11:52:09,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:09,191 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2022-11-16 11:52:09,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2022-11-16 11:52:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:52:09,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:09,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:09,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:09,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 11:52:09,398 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 583164819, now seen corresponding path program 1 times [2022-11-16 11:52:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114604945] [2022-11-16 11:52:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114604945] [2022-11-16 11:52:09,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114604945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298441279] [2022-11-16 11:52:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:09,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:09,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:09,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:09,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:52:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:10,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 11:52:10,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:10,272 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:10,273 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 [2022-11-16 11:52:10,309 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 [2022-11-16 11:52:10,403 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:52:10,404 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 [2022-11-16 11:52:10,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:10,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:10,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2022-11-16 11:52:10,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 11:52:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:10,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:11,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:11,041 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 25 treesize of output 29 [2022-11-16 11:52:11,397 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_88| Int) (v_ArrVal_1184 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_88| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_88|)) (let ((.cse0 (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1184) |c_ULTIMATE.start_main_~head~0#1.base|))) (= (select .cse0 |v_ULTIMATE.start_main_~x~0#1.offset_88|) (select .cse0 |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_88| Int) (v_ArrVal_1184 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1184) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_88|))) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_88| |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_88|)))))) is different from false [2022-11-16 11:52:11,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:11,441 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 [2022-11-16 11:52:11,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:11,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2022-11-16 11:52:11,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 11:52:11,504 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:52:11,504 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 33 treesize of output 1 [2022-11-16 11:52:11,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:11,748 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 59 treesize of output 129 [2022-11-16 11:52:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:12,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298441279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:12,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:12,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 36 [2022-11-16 11:52:12,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574865601] [2022-11-16 11:52:12,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:12,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 11:52:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 11:52:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1106, Unknown=3, NotChecked=68, Total=1332 [2022-11-16 11:52:12,029 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:12,861 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2022-11-16 11:52:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:52:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2022-11-16 11:52:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:12,862 INFO L225 Difference]: With dead ends: 217 [2022-11-16 11:52:12,862 INFO L226 Difference]: Without dead ends: 217 [2022-11-16 11:52:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=335, Invalid=1646, Unknown=3, NotChecked=86, Total=2070 [2022-11-16 11:52:12,864 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 393 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 473 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:12,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 865 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 671 Invalid, 0 Unknown, 473 Unchecked, 0.5s Time] [2022-11-16 11:52:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-16 11:52:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 191. [2022-11-16 11:52:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 170 states have (on average 1.2294117647058824) internal successors, (209), 190 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2022-11-16 11:52:12,868 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 35 [2022-11-16 11:52:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:12,869 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2022-11-16 11:52:12,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2022-11-16 11:52:12,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:52:12,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:12,870 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] [2022-11-16 11:52:12,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:13,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:52:13,076 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1162079456, now seen corresponding path program 1 times [2022-11-16 11:52:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:13,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854814602] [2022-11-16 11:52:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:13,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:13,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854814602] [2022-11-16 11:52:13,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854814602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341613185] [2022-11-16 11:52:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:13,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:13,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:13,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:52:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:13,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:52:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:13,852 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 [2022-11-16 11:52:13,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:52:13,933 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:13,934 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 [2022-11-16 11:52:13,991 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 [2022-11-16 11:52:14,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:52:14,012 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 [2022-11-16 11:52:14,080 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 [2022-11-16 11:52:14,159 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 [2022-11-16 11:52:14,210 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 [2022-11-16 11:52:14,234 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:14,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:52:14,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:52:14,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:52:14,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:52:14,375 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 [2022-11-16 11:52:14,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:14,446 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 17 treesize of output 15 [2022-11-16 11:52:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:14,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:17,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:17,806 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 79 treesize of output 97 [2022-11-16 11:52:20,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:20,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:20,737 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 27 treesize of output 33 [2022-11-16 11:52:20,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:20,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:20,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2022-11-16 11:52:20,758 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 20 treesize of output 18 [2022-11-16 11:52:20,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:20,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:20,799 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 29 treesize of output 35 [2022-11-16 11:52:20,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:20,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:20,823 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 11:52:20,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2022-11-16 11:52:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:20,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341613185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:20,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:20,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2022-11-16 11:52:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199616641] [2022-11-16 11:52:20,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 11:52:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 11:52:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1442, Unknown=15, NotChecked=0, Total=1640 [2022-11-16 11:52:20,991 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:22,707 INFO L93 Difference]: Finished difference Result 273 states and 293 transitions. [2022-11-16 11:52:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:52:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2022-11-16 11:52:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:22,709 INFO L225 Difference]: With dead ends: 273 [2022-11-16 11:52:22,709 INFO L226 Difference]: Without dead ends: 273 [2022-11-16 11:52:22,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=484, Invalid=2693, Unknown=15, NotChecked=0, Total=3192 [2022-11-16 11:52:22,711 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 559 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 968 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:22,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1376 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1134 Invalid, 0 Unknown, 968 Unchecked, 0.9s Time] [2022-11-16 11:52:22,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-16 11:52:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 185. [2022-11-16 11:52:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.2317073170731707) internal successors, (202), 184 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2022-11-16 11:52:22,716 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 35 [2022-11-16 11:52:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:22,717 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2022-11-16 11:52:22,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2022-11-16 11:52:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:52:22,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:22,718 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] [2022-11-16 11:52:22,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:22,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:52:22,925 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1536470862, now seen corresponding path program 1 times [2022-11-16 11:52:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:22,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69844573] [2022-11-16 11:52:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:23,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:23,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69844573] [2022-11-16 11:52:23,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69844573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:23,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:23,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:52:23,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419425086] [2022-11-16 11:52:23,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:23,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:52:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:23,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:52:23,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:52:23,088 INFO L87 Difference]: Start difference. First operand 185 states and 202 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:23,440 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2022-11-16 11:52:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:52:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-16 11:52:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:23,442 INFO L225 Difference]: With dead ends: 212 [2022-11-16 11:52:23,442 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 11:52:23,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:52:23,443 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:23,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 309 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:52:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 11:52:23,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2022-11-16 11:52:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 171 states have (on average 1.2339181286549707) internal successors, (211), 191 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 211 transitions. [2022-11-16 11:52:23,458 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 211 transitions. Word has length 36 [2022-11-16 11:52:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:23,459 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 211 transitions. [2022-11-16 11:52:23,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 211 transitions. [2022-11-16 11:52:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 11:52:23,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:23,460 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] [2022-11-16 11:52:23,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:52:23,460 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2075647413, now seen corresponding path program 1 times [2022-11-16 11:52:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:23,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773144972] [2022-11-16 11:52:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:23,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:23,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773144972] [2022-11-16 11:52:23,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773144972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438233262] [2022-11-16 11:52:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:23,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:23,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:23,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:23,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:52:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 11:52:24,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:24,222 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:24,223 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 [2022-11-16 11:52:24,275 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 [2022-11-16 11:52:24,285 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 [2022-11-16 11:52:24,342 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 [2022-11-16 11:52:24,376 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 [2022-11-16 11:52:24,547 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 [2022-11-16 11:52:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:24,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:24,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-16 11:52:24,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:24,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-16 11:52:24,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:24,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:52:24,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:52:25,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:25,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2022-11-16 11:52:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:25,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438233262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:25,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:25,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 32 [2022-11-16 11:52:25,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151903742] [2022-11-16 11:52:25,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:25,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 11:52:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 11:52:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:52:25,271 INFO L87 Difference]: Start difference. First operand 192 states and 211 transitions. Second operand has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:26,796 INFO L93 Difference]: Finished difference Result 234 states and 248 transitions. [2022-11-16 11:52:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:52:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-16 11:52:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:26,798 INFO L225 Difference]: With dead ends: 234 [2022-11-16 11:52:26,798 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 11:52:26,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 11:52:26,800 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 654 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:26,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 693 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 715 Invalid, 0 Unknown, 180 Unchecked, 0.6s Time] [2022-11-16 11:52:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 11:52:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2022-11-16 11:52:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.231638418079096) internal successors, (218), 197 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) [2022-11-16 11:52:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2022-11-16 11:52:26,806 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 37 [2022-11-16 11:52:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:26,807 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2022-11-16 11:52:26,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.78125) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2022-11-16 11:52:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 11:52:26,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:26,808 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:52:26,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:27,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:52:27,015 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash 203412162, now seen corresponding path program 1 times [2022-11-16 11:52:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:27,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980302978] [2022-11-16 11:52:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:28,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980302978] [2022-11-16 11:52:28,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980302978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936740009] [2022-11-16 11:52:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:28,297 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:28,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:52:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-16 11:52:28,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:28,468 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 [2022-11-16 11:52:28,522 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:52:28,523 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 [2022-11-16 11:52:28,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-16 11:52:28,601 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 [2022-11-16 11:52:28,619 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 [2022-11-16 11:52:28,856 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:52:28,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:52:28,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:52:28,885 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:52:28,885 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 40 treesize of output 36 [2022-11-16 11:52:28,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 11:52:29,063 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 [2022-11-16 11:52:29,086 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:52:29,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:52:29,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:52:29,119 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:52:29,119 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 [2022-11-16 11:52:29,233 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-16 11:52:29,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 11:52:29,317 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 [2022-11-16 11:52:29,345 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:52:29,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:52:29,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:52:29,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:29,382 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 11:52:29,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2022-11-16 11:52:29,515 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-16 11:52:29,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 65 [2022-11-16 11:52:29,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 11:52:29,531 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 26 treesize of output 28 [2022-11-16 11:52:29,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:29,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:52:29,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:29,760 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-16 11:52:29,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2022-11-16 11:52:29,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 11:52:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:29,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:30,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:30,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2022-11-16 11:52:30,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:30,443 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 51 treesize of output 57 [2022-11-16 11:52:30,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:30,460 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 100 treesize of output 99 [2022-11-16 11:52:30,469 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 37 treesize of output 21 [2022-11-16 11:52:30,512 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 24 treesize of output 20 [2022-11-16 11:52:44,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:44,889 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 25 treesize of output 26 [2022-11-16 11:52:44,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:44,903 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 154 treesize of output 153 [2022-11-16 11:52:44,914 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 138 treesize of output 130 [2022-11-16 11:52:44,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 126 [2022-11-16 11:52:45,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-16 11:52:45,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:45,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:52:45,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2022-11-16 11:52:45,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2022-11-16 11:52:45,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:45,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:52:45,228 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 9 treesize of output 7 [2022-11-16 11:52:45,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,297 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 26 treesize of output 27 [2022-11-16 11:52:45,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:45,316 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 40 [2022-11-16 11:52:45,332 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:45,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-16 11:52:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:46,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936740009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:46,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:46,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 45 [2022-11-16 11:52:46,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617904083] [2022-11-16 11:52:46,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 11:52:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 11:52:46,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1778, Unknown=5, NotChecked=0, Total=1980 [2022-11-16 11:52:46,154 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:48,845 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2022-11-16 11:52:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:52:48,846 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-11-16 11:52:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:48,848 INFO L225 Difference]: With dead ends: 264 [2022-11-16 11:52:48,848 INFO L226 Difference]: Without dead ends: 264 [2022-11-16 11:52:48,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=526, Invalid=3501, Unknown=5, NotChecked=0, Total=4032 [2022-11-16 11:52:48,849 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 772 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:48,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1309 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1382 Invalid, 0 Unknown, 1127 Unchecked, 1.2s Time] [2022-11-16 11:52:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-16 11:52:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 198. [2022-11-16 11:52:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 197 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 217 transitions. [2022-11-16 11:52:48,855 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 217 transitions. Word has length 37 [2022-11-16 11:52:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:48,855 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 217 transitions. [2022-11-16 11:52:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 217 transitions. [2022-11-16 11:52:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:52:48,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:48,856 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] [2022-11-16 11:52:48,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:49,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:49,062 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1536723089, now seen corresponding path program 1 times [2022-11-16 11:52:49,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:49,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792315009] [2022-11-16 11:52:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:49,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792315009] [2022-11-16 11:52:49,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792315009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:49,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:52:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286890981] [2022-11-16 11:52:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:49,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:52:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:52:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:52:49,471 INFO L87 Difference]: Start difference. First operand 198 states and 217 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:49,949 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2022-11-16 11:52:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:52:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-11-16 11:52:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:49,950 INFO L225 Difference]: With dead ends: 212 [2022-11-16 11:52:49,950 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 11:52:49,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:52:49,951 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 190 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:49,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 237 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:52:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 11:52:49,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2022-11-16 11:52:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 181 states have (on average 1.2209944751381216) internal successors, (221), 201 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 221 transitions. [2022-11-16 11:52:49,955 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 221 transitions. Word has length 39 [2022-11-16 11:52:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:49,956 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 221 transitions. [2022-11-16 11:52:49,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 221 transitions. [2022-11-16 11:52:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:52:49,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:49,956 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:52:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 11:52:49,957 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1832342548, now seen corresponding path program 1 times [2022-11-16 11:52:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:49,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436237132] [2022-11-16 11:52:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436237132] [2022-11-16 11:52:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436237132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856378877] [2022-11-16 11:52:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:50,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:50,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:52:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:50,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 11:52:50,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:50,607 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:50,607 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 [2022-11-16 11:52:50,642 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 [2022-11-16 11:52:50,649 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 [2022-11-16 11:52:50,708 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 [2022-11-16 11:52:50,735 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 [2022-11-16 11:52:50,878 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 [2022-11-16 11:52:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:50,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:51,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:51,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-16 11:52:51,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:51,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2022-11-16 11:52:51,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:52:51,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:51,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2022-11-16 11:52:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:51,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856378877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:51,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:51,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 27 [2022-11-16 11:52:51,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667691589] [2022-11-16 11:52:51,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:51,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:52:51,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:52:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=623, Unknown=4, NotChecked=0, Total=756 [2022-11-16 11:52:51,332 INFO L87 Difference]: Start difference. First operand 202 states and 221 transitions. Second operand has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:52,074 INFO L93 Difference]: Finished difference Result 229 states and 241 transitions. [2022-11-16 11:52:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:52:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2022-11-16 11:52:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:52,077 INFO L225 Difference]: With dead ends: 229 [2022-11-16 11:52:52,077 INFO L226 Difference]: Without dead ends: 229 [2022-11-16 11:52:52,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=319, Invalid=1009, Unknown=4, NotChecked=0, Total=1332 [2022-11-16 11:52:52,078 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 409 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:52,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 684 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 571 Invalid, 0 Unknown, 234 Unchecked, 0.4s Time] [2022-11-16 11:52:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-16 11:52:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 208. [2022-11-16 11:52:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 207 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 230 transitions. [2022-11-16 11:52:52,089 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 230 transitions. Word has length 39 [2022-11-16 11:52:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:52,090 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 230 transitions. [2022-11-16 11:52:52,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.185185185185185) internal successors, (86), 28 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:52,090 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 230 transitions. [2022-11-16 11:52:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:52:52,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:52,091 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:52,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:52,302 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:52:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1681982138, now seen corresponding path program 2 times [2022-11-16 11:52:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063898876] [2022-11-16 11:52:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:52,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:52:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063898876] [2022-11-16 11:52:53,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063898876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:53,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145815090] [2022-11-16 11:52:53,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:52:53,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:53,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:53,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:53,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:52:53,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:52:53,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:52:53,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 11:52:53,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:53,395 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 [2022-11-16 11:52:53,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:52:53,498 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:52:53,498 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 [2022-11-16 11:52:53,540 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 [2022-11-16 11:52:53,556 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 [2022-11-16 11:52:53,638 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 [2022-11-16 11:52:53,660 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 [2022-11-16 11:52:53,737 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:52:53,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:52:53,761 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 [2022-11-16 11:52:53,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:52:53,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 11:52:53,881 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 [2022-11-16 11:52:53,948 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 [2022-11-16 11:52:54,011 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 11:52:54,012 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 [2022-11-16 11:52:54,064 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 [2022-11-16 11:52:54,071 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 [2022-11-16 11:52:54,139 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 [2022-11-16 11:52:54,154 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 [2022-11-16 11:52:54,182 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 [2022-11-16 11:52:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:52:54,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:59,135 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-16 11:52:59,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 22 [2022-11-16 11:52:59,567 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1761 Int) (v_ArrVal_1772 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc3#1.base_31| Int) (v_ArrVal_1770 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc5#1.base_37| Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_29| Int)) (or (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_#t~malloc5#1.base_37|) (= |v_ULTIMATE.start_main_#t~malloc3#1.base_29| |v_ULTIMATE.start_main_#t~malloc5#1.base_37|) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_31|) 0)) (= (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_1761)) |v_ULTIMATE.start_main_#t~malloc3#1.base_31| v_ArrVal_1764) |v_ULTIMATE.start_main_#t~malloc3#1.base_29| v_ArrVal_1770) |v_ULTIMATE.start_main_#t~malloc5#1.base_37| v_ArrVal_1772) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_#t~malloc3#1.base_29|))) is different from false [2022-11-16 11:52:59,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:52:59,588 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 31 treesize of output 37 [2022-11-16 11:52:59,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:59,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:59,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 11:52:59,602 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 [2022-11-16 11:52:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:59,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145815090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:59,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:59,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 20] total 42 [2022-11-16 11:52:59,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785726988] [2022-11-16 11:52:59,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:59,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 11:52:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 11:52:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1379, Unknown=27, NotChecked=78, Total=1722 [2022-11-16 11:52:59,669 INFO L87 Difference]: Start difference. First operand 208 states and 230 transitions. Second operand has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:00,954 INFO L93 Difference]: Finished difference Result 240 states and 257 transitions. [2022-11-16 11:53:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:53:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2022-11-16 11:53:00,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:00,957 INFO L225 Difference]: With dead ends: 240 [2022-11-16 11:53:00,958 INFO L226 Difference]: Without dead ends: 240 [2022-11-16 11:53:00,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=515, Invalid=2432, Unknown=27, NotChecked=106, Total=3080 [2022-11-16 11:53:00,959 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 441 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1135 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:00,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1154 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 919 Invalid, 0 Unknown, 1135 Unchecked, 0.7s Time] [2022-11-16 11:53:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-16 11:53:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 208. [2022-11-16 11:53:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 187 states have (on average 1.2245989304812834) internal successors, (229), 207 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 229 transitions. [2022-11-16 11:53:00,965 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 229 transitions. Word has length 39 [2022-11-16 11:53:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:00,965 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 229 transitions. [2022-11-16 11:53:00,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 42 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 229 transitions. [2022-11-16 11:53:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:53:00,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:00,966 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] [2022-11-16 11:53:00,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:01,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:01,174 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:53:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -393775241, now seen corresponding path program 1 times [2022-11-16 11:53:01,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:01,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552479897] [2022-11-16 11:53:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:01,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:01,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552479897] [2022-11-16 11:53:01,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552479897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:01,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:01,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:53:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762675705] [2022-11-16 11:53:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:53:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:53:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:53:01,840 INFO L87 Difference]: Start difference. First operand 208 states and 229 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:02,485 INFO L93 Difference]: Finished difference Result 212 states and 229 transitions. [2022-11-16 11:53:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:53:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-16 11:53:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:02,487 INFO L225 Difference]: With dead ends: 212 [2022-11-16 11:53:02,487 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 11:53:02,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:53:02,488 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 59 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 346 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:53:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 11:53:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2022-11-16 11:53:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 177 states have (on average 1.231638418079096) internal successors, (218), 197 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) [2022-11-16 11:53:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2022-11-16 11:53:02,493 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 40 [2022-11-16 11:53:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:02,493 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2022-11-16 11:53:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2022-11-16 11:53:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:53:02,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:02,494 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:53:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 11:53:02,494 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:53:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 968044359, now seen corresponding path program 1 times [2022-11-16 11:53:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166941096] [2022-11-16 11:53:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166941096] [2022-11-16 11:53:02,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166941096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:02,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547600397] [2022-11-16 11:53:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:02,870 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:02,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:53:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:03,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 11:53:03,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:03,203 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:53:03,203 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 [2022-11-16 11:53:03,258 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 [2022-11-16 11:53:03,376 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:53:03,376 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 26 treesize of output 27 [2022-11-16 11:53:03,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 11:53:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:03,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:04,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:04,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-16 11:53:04,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:04,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2022-11-16 11:53:04,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 11:53:04,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:04,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2022-11-16 11:53:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:04,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547600397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:04,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:53:04,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 29 [2022-11-16 11:53:04,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722671423] [2022-11-16 11:53:04,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:04,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 11:53:04,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:04,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 11:53:04,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=732, Unknown=4, NotChecked=0, Total=870 [2022-11-16 11:53:04,380 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:05,663 INFO L93 Difference]: Finished difference Result 215 states and 227 transitions. [2022-11-16 11:53:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:53:05,663 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-16 11:53:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:05,664 INFO L225 Difference]: With dead ends: 215 [2022-11-16 11:53:05,664 INFO L226 Difference]: Without dead ends: 215 [2022-11-16 11:53:05,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=403, Invalid=1573, Unknown=4, NotChecked=0, Total=1980 [2022-11-16 11:53:05,666 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 480 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:05,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 617 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 796 Invalid, 0 Unknown, 249 Unchecked, 0.7s Time] [2022-11-16 11:53:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-16 11:53:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2022-11-16 11:53:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 164 states have (on average 1.225609756097561) internal successors, (201), 184 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 201 transitions. [2022-11-16 11:53:05,671 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 201 transitions. Word has length 40 [2022-11-16 11:53:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:05,672 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 201 transitions. [2022-11-16 11:53:05,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 201 transitions. [2022-11-16 11:53:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:53:05,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:05,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:05,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 11:53:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-16 11:53:05,880 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-16 11:53:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1319371661, now seen corresponding path program 1 times [2022-11-16 11:53:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:05,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047717427] [2022-11-16 11:53:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047717427] [2022-11-16 11:53:06,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047717427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078505908] [2022-11-16 11:53:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:06,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:06,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:06,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:06,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1acfbd9-649f-4944-9d07-16307c0c7e6c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:53:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:07,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:53:07,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:07,051 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 [2022-11-16 11:53:07,160 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:53:07,160 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 [2022-11-16 11:53:07,215 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 [2022-11-16 11:53:07,219 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 [2022-11-16 11:53:07,411 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:53:07,411 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 [2022-11-16 11:53:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:07,424 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 14 treesize of output 16 [2022-11-16 11:53:07,545 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:53:07,546 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 [2022-11-16 11:53:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:07,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 11:53:07,624 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-16 11:53:07,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-11-16 11:53:07,715 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:53:07,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 11:53:07,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 11:53:07,752 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 11:53:07,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2022-11-16 11:53:07,960 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-16 11:53:07,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 88 [2022-11-16 11:53:07,976 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 11:53:07,977 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 72 treesize of output 71 [2022-11-16 11:53:08,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:53:08,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2022-11-16 11:53:08,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:53:08,624 INFO L321 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-11-16 11:53:08,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 35 [2022-11-16 11:53:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:08,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:09,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:09,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-16 11:53:10,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:10,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 71 [2022-11-16 11:53:10,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:10,019 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 78 treesize of output 71 [2022-11-16 11:53:10,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:10,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 199 [2022-11-16 11:53:11,224 INFO L321 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2022-11-16 11:53:11,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4970 treesize of output 4939 [2022-11-16 11:53:11,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:11,477 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 4642 treesize of output 3748 [2022-11-16 11:53:11,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:53:11,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3664 treesize of output 3420 [2022-11-16 11:53:11,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 181 [2022-11-16 11:53:11,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 171