./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:41:55,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:41:55,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:41:55,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:41:55,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:41:55,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:41:55,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:41:55,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:41:55,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:41:55,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:41:55,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:41:55,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:41:55,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:41:55,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:41:55,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:41:55,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:41:55,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:41:55,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:41:55,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:41:55,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:41:55,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:41:55,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:41:55,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:41:55,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:41:55,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:41:55,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:41:55,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:41:55,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:41:55,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:41:55,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:41:55,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:41:55,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:41:55,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:41:55,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:41:55,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:41:55,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:41:55,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:41:55,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:41:55,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:41:55,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:41:55,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:41:55,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:41:55,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:41:55,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:41:55,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:41:55,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:41:55,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:41:55,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:41:55,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:41:55,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:41:55,613 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:41:55,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:41:55,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:41:55,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:41:55,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:41:55,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:41:55,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:41:55,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:41:55,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:41:55,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:41:55,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:41:55,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:41:55,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:41:55,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:41:55,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:41:55,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:41:55,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:41:55,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:41:55,617 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_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-11-20 05:41:55,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:41:56,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:41:56,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:41:56,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:41:56,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:41:56,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-11-20 05:41:56,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/bc540cb5f/d7f0b32e04854049b22281251f851cb6/FLAG8bf2d91bb [2021-11-20 05:41:56,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:41:56,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-11-20 05:41:56,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/bc540cb5f/d7f0b32e04854049b22281251f851cb6/FLAG8bf2d91bb [2021-11-20 05:41:57,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/bc540cb5f/d7f0b32e04854049b22281251f851cb6 [2021-11-20 05:41:57,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:41:57,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:41:57,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:41:57,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:41:57,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:41:57,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2def0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57, skipping insertion in model container [2021-11-20 05:41:57,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:41:57,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:41:57,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-11-20 05:41:57,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-11-20 05:41:57,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-11-20 05:41:57,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-11-20 05:41:57,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-11-20 05:41:57,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-11-20 05:41:57,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-11-20 05:41:57,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:41:57,598 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:41:57,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-11-20 05:41:57,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-11-20 05:41:57,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-11-20 05:41:57,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-11-20 05:41:57,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-11-20 05:41:57,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-11-20 05:41:57,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-11-20 05:41:57,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:41:57,712 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:41:57,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57 WrapperNode [2021-11-20 05:41:57,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:41:57,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:41:57,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:41:57,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:41:57,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,836 INFO L137 Inliner]: procedures = 119, calls = 43, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 165 [2021-11-20 05:41:57,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:41:57,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:41:57,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:41:57,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:41:57,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:41:57,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:41:57,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:41:57,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:41:57,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (1/1) ... [2021-11-20 05:41:57,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:41:57,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:41:57,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:41:57,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:41:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:41:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:41:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:41:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:41:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:41:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:41:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:41:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:41:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:41:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:41:58,211 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:41:58,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:41:58,894 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:41:58,905 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:41:58,906 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-20 05:41:58,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:58 BoogieIcfgContainer [2021-11-20 05:41:58,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:41:58,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:41:58,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:41:58,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:41:58,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:41:57" (1/3) ... [2021-11-20 05:41:58,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5affa01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:58, skipping insertion in model container [2021-11-20 05:41:58,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:57" (2/3) ... [2021-11-20 05:41:58,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5affa01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:58, skipping insertion in model container [2021-11-20 05:41:58,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:58" (3/3) ... [2021-11-20 05:41:58,923 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-11-20 05:41:58,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:41:58,935 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-11-20 05:41:59,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:41:59,023 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:41:59,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-11-20 05:41:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 88 states have (on average 2.215909090909091) internal successors, (195), 165 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:41:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:41:59,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:41:59,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:41:59,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:41:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:41:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 05:41:59,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:41:59,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465564331] [2021-11-20 05:41:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:41:59,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:41:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:41:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:41:59,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:41:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465564331] [2021-11-20 05:41:59,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465564331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:41:59,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:41:59,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:41:59,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686451574] [2021-11-20 05:41:59,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:41:59,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:41:59,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:41:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:41:59,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:41:59,422 INFO L87 Difference]: Start difference. First operand has 166 states, 88 states have (on average 2.215909090909091) internal successors, (195), 165 states have internal predecessors, (195), 0 states have call successors, (0), 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) [2021-11-20 05:41:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:41:59,642 INFO L93 Difference]: Finished difference Result 193 states and 199 transitions. [2021-11-20 05:41:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:41:59,645 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 [2021-11-20 05:41:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:41:59,659 INFO L225 Difference]: With dead ends: 193 [2021-11-20 05:41:59,659 INFO L226 Difference]: Without dead ends: 189 [2021-11-20 05:41:59,661 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:41:59,667 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:41:59,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 112 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:41:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-20 05:41:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 161. [2021-11-20 05:41:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 87 states have (on average 1.9080459770114941) internal successors, (166), 160 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:41:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 166 transitions. [2021-11-20 05:41:59,727 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 166 transitions. Word has length 3 [2021-11-20 05:41:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:41:59,727 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 166 transitions. [2021-11-20 05:41:59,727 INFO L471 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) [2021-11-20 05:41:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 166 transitions. [2021-11-20 05:41:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:41:59,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:41:59,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:41:59,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:41:59,729 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:41:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:41:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 05:41:59,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:41:59,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263193822] [2021-11-20 05:41:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:41:59,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:41:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:41:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:41:59,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:41:59,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263193822] [2021-11-20 05:41:59,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263193822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:41:59,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:41:59,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:41:59,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095637339] [2021-11-20 05:41:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:41:59,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:41:59,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:41:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:41:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:41:59,795 INFO L87 Difference]: Start difference. First operand 161 states and 166 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) [2021-11-20 05:41:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:41:59,939 INFO L93 Difference]: Finished difference Result 158 states and 163 transitions. [2021-11-20 05:41:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:41:59,939 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 [2021-11-20 05:41:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:41:59,942 INFO L225 Difference]: With dead ends: 158 [2021-11-20 05:41:59,942 INFO L226 Difference]: Without dead ends: 158 [2021-11-20 05:41:59,942 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:41:59,944 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:41:59,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 91 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:41:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-20 05:41:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-20 05:41:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 87 states have (on average 1.8735632183908046) internal successors, (163), 157 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:41:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2021-11-20 05:41:59,960 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 3 [2021-11-20 05:41:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:41:59,960 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2021-11-20 05:41:59,960 INFO L471 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) [2021-11-20 05:41:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2021-11-20 05:41:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:41:59,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:41:59,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:41:59,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:41:59,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:41:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:41:59,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026981, now seen corresponding path program 1 times [2021-11-20 05:41:59,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:41:59,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673939429] [2021-11-20 05:41:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:41:59,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:00,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:00,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673939429] [2021-11-20 05:42:00,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673939429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:00,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:00,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:42:00,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302587503] [2021-11-20 05:42:00,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:00,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:42:00,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:42:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:00,082 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:00,232 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2021-11-20 05:42:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:00,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:42:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:00,235 INFO L225 Difference]: With dead ends: 157 [2021-11-20 05:42:00,235 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 05:42:00,236 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:00,238 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:00,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 97 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:42:00,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 05:42:00,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2021-11-20 05:42:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 89 states have (on average 1.797752808988764) internal successors, (160), 152 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 160 transitions. [2021-11-20 05:42:00,252 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 160 transitions. Word has length 7 [2021-11-20 05:42:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 160 transitions. [2021-11-20 05:42:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 160 transitions. [2021-11-20 05:42:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:42:00,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:00,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:00,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:42:00,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026982, now seen corresponding path program 1 times [2021-11-20 05:42:00,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:00,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613907005] [2021-11-20 05:42:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:00,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:00,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:00,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613907005] [2021-11-20 05:42:00,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613907005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:00,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:00,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:42:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484167916] [2021-11-20 05:42:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:00,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:42:00,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:42:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:00,376 INFO L87 Difference]: Start difference. First operand 153 states and 160 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:00,552 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2021-11-20 05:42:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:00,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:42:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:00,556 INFO L225 Difference]: With dead ends: 170 [2021-11-20 05:42:00,556 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 05:42:00,557 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:00,567 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:00,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 104 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 05:42:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-11-20 05:42:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 156 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) [2021-11-20 05:42:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 164 transitions. [2021-11-20 05:42:00,585 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 164 transitions. Word has length 7 [2021-11-20 05:42:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:00,586 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 164 transitions. [2021-11-20 05:42:00,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 164 transitions. [2021-11-20 05:42:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:42:00,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:00,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:00,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:42:00,609 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1253214510, now seen corresponding path program 1 times [2021-11-20 05:42:00,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228166974] [2021-11-20 05:42:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:00,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:00,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:00,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228166974] [2021-11-20 05:42:00,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228166974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:00,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:42:00,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602523585] [2021-11-20 05:42:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:00,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:00,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:00,784 INFO L87 Difference]: Start difference. First operand 157 states and 164 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:01,033 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2021-11-20 05:42:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:42:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:42:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:01,039 INFO L225 Difference]: With dead ends: 158 [2021-11-20 05:42:01,039 INFO L226 Difference]: Without dead ends: 158 [2021-11-20 05:42:01,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:01,044 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 214 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:01,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 81 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-20 05:42:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 144. [2021-11-20 05:42:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 143 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2021-11-20 05:42:01,065 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 13 [2021-11-20 05:42:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:01,065 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2021-11-20 05:42:01,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2021-11-20 05:42:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:42:01,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:01,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:01,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:42:01,067 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:01,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1253214511, now seen corresponding path program 1 times [2021-11-20 05:42:01,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:01,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970853016] [2021-11-20 05:42:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:01,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:01,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:01,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970853016] [2021-11-20 05:42:01,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970853016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:01,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:01,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:42:01,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228736524] [2021-11-20 05:42:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:01,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:01,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:01,201 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:01,478 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2021-11-20 05:42:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:42:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:42:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:01,480 INFO L225 Difference]: With dead ends: 183 [2021-11-20 05:42:01,480 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 05:42:01,481 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:01,482 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 178 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:01,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 121 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:42:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 05:42:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 154. [2021-11-20 05:42:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 153 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2021-11-20 05:42:01,496 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 13 [2021-11-20 05:42:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:01,496 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2021-11-20 05:42:01,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2021-11-20 05:42:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:42:01,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:01,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:01,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:42:01,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1748354145, now seen corresponding path program 1 times [2021-11-20 05:42:01,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:01,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010054504] [2021-11-20 05:42:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:01,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:01,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:01,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010054504] [2021-11-20 05:42:01,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010054504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:01,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:01,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:42:01,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165015582] [2021-11-20 05:42:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:01,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:01,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:01,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:01,616 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:01,869 INFO L93 Difference]: Finished difference Result 197 states and 206 transitions. [2021-11-20 05:42:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:42:01,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:42:01,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:01,873 INFO L225 Difference]: With dead ends: 197 [2021-11-20 05:42:01,873 INFO L226 Difference]: Without dead ends: 197 [2021-11-20 05:42:01,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:42:01,874 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 301 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:01,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 153 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-20 05:42:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 152. [2021-11-20 05:42:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 108 states have (on average 1.5) internal successors, (162), 151 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) [2021-11-20 05:42:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-11-20 05:42:01,881 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 15 [2021-11-20 05:42:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:01,882 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-11-20 05:42:01,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-11-20 05:42:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:42:01,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:01,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:01,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:42:01,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1637230725, now seen corresponding path program 1 times [2021-11-20 05:42:01,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:01,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555621659] [2021-11-20 05:42:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:01,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:01,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555621659] [2021-11-20 05:42:01,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555621659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:01,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:01,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:01,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174437406] [2021-11-20 05:42:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:01,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:01,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:01,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:01,970 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:02,174 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2021-11-20 05:42:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:42:02,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 05:42:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:02,177 INFO L225 Difference]: With dead ends: 151 [2021-11-20 05:42:02,177 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 05:42:02,177 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:02,178 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 9 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:02,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 342 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 05:42:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-20 05:42:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 108 states have (on average 1.4814814814814814) internal successors, (160), 150 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2021-11-20 05:42:02,185 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 16 [2021-11-20 05:42:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:02,185 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2021-11-20 05:42:02,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2021-11-20 05:42:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:42:02,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:02,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:02,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:42:02,187 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:02,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1637230724, now seen corresponding path program 1 times [2021-11-20 05:42:02,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:02,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880125831] [2021-11-20 05:42:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:02,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:02,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880125831] [2021-11-20 05:42:02,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880125831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:02,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:02,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:02,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119022683] [2021-11-20 05:42:02,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:02,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:02,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:02,284 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:02,544 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2021-11-20 05:42:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:42:02,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 05:42:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:02,546 INFO L225 Difference]: With dead ends: 150 [2021-11-20 05:42:02,547 INFO L226 Difference]: Without dead ends: 150 [2021-11-20 05:42:02,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:42:02,548 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 4 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:02,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 327 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-20 05:42:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-20 05:42:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 108 states have (on average 1.462962962962963) internal successors, (158), 149 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2021-11-20 05:42:02,556 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 16 [2021-11-20 05:42:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:02,557 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2021-11-20 05:42:02,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2021-11-20 05:42:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:42:02,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:02,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:02,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:42:02,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 154003716, now seen corresponding path program 1 times [2021-11-20 05:42:02,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:02,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524546888] [2021-11-20 05:42:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:02,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:02,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524546888] [2021-11-20 05:42:02,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524546888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:02,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:42:02,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568273119] [2021-11-20 05:42:02,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:42:02,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:02,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:42:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:42:02,794 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:03,202 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2021-11-20 05:42:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:42:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 05:42:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:03,204 INFO L225 Difference]: With dead ends: 204 [2021-11-20 05:42:03,204 INFO L226 Difference]: Without dead ends: 204 [2021-11-20 05:42:03,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:42:03,205 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 369 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:03,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 338 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:42:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-20 05:42:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 155. [2021-11-20 05:42:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 113 states have (on average 1.4424778761061947) internal successors, (163), 154 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:03,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2021-11-20 05:42:03,214 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 18 [2021-11-20 05:42:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:03,215 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2021-11-20 05:42:03,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2021-11-20 05:42:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:42:03,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:03,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:03,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:42:03,217 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash 510771581, now seen corresponding path program 1 times [2021-11-20 05:42:03,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:03,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708943995] [2021-11-20 05:42:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:03,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:03,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:03,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708943995] [2021-11-20 05:42:03,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708943995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:03,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:03,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:42:03,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338568080] [2021-11-20 05:42:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:03,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:42:03,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:03,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:42:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:03,389 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:03,863 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-11-20 05:42:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:42:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:42:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:03,865 INFO L225 Difference]: With dead ends: 154 [2021-11-20 05:42:03,865 INFO L226 Difference]: Without dead ends: 154 [2021-11-20 05:42:03,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:42:03,867 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 183 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:03,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 266 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:42:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-20 05:42:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-20 05:42:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 153 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) [2021-11-20 05:42:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-11-20 05:42:03,872 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 20 [2021-11-20 05:42:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:03,872 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-11-20 05:42:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-11-20 05:42:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:42:03,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:03,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:03,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:42:03,874 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash 510771582, now seen corresponding path program 1 times [2021-11-20 05:42:03,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:03,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928951996] [2021-11-20 05:42:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:03,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:04,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:04,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928951996] [2021-11-20 05:42:04,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928951996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:04,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:04,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:42:04,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835483181] [2021-11-20 05:42:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:04,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:42:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:42:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:42:04,081 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:04,953 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2021-11-20 05:42:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:42:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:42:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:04,955 INFO L225 Difference]: With dead ends: 172 [2021-11-20 05:42:04,955 INFO L226 Difference]: Without dead ends: 172 [2021-11-20 05:42:04,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:42:04,956 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 233 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:04,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 359 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-20 05:42:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2021-11-20 05:42:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 157 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2021-11-20 05:42:04,961 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 20 [2021-11-20 05:42:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:04,961 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2021-11-20 05:42:04,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2021-11-20 05:42:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:42:04,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:04,963 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:04,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:42:04,963 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2006006511, now seen corresponding path program 1 times [2021-11-20 05:42:04,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:04,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430275638] [2021-11-20 05:42:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:04,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:05,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430275638] [2021-11-20 05:42:05,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430275638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:42:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963396749] [2021-11-20 05:42:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:05,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:05,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:05,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:42:05,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:42:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:05,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:42:05,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:05,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:05,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:05,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:42:05,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:42:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,537 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:42:05,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:42:05,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:05,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:42:05,980 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:42:05,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 31 [2021-11-20 05:42:05,989 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:42:05,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 13 [2021-11-20 05:42:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:06,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:06,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-20 05:42:06,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-20 05:42:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963396749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:42:06,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:42:06,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 10 [2021-11-20 05:42:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242927707] [2021-11-20 05:42:06,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:42:06,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:42:06,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:42:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:42:06,248 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:06,780 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2021-11-20 05:42:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:42:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 05:42:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:06,782 INFO L225 Difference]: With dead ends: 209 [2021-11-20 05:42:06,783 INFO L226 Difference]: Without dead ends: 209 [2021-11-20 05:42:06,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:42:06,784 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 264 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:06,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 396 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:42:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-20 05:42:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 165. [2021-11-20 05:42:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 164 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) [2021-11-20 05:42:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-11-20 05:42:06,803 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 25 [2021-11-20 05:42:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:06,803 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-11-20 05:42:06,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-11-20 05:42:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:42:06,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:06,805 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:06,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 05:42:07,023 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1963988258, now seen corresponding path program 1 times [2021-11-20 05:42:07,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:07,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477002173] [2021-11-20 05:42:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:07,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:07,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:07,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477002173] [2021-11-20 05:42:07,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477002173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:07,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:07,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:42:07,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100273881] [2021-11-20 05:42:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:07,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:07,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:07,136 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:07,306 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-11-20 05:42:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:42:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 05:42:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:07,309 INFO L225 Difference]: With dead ends: 169 [2021-11-20 05:42:07,309 INFO L226 Difference]: Without dead ends: 169 [2021-11-20 05:42:07,309 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:07,310 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 25 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:07,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 338 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:07,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-20 05:42:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-11-20 05:42:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 163 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-11-20 05:42:07,317 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 25 [2021-11-20 05:42:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:07,317 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-11-20 05:42:07,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-11-20 05:42:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:42:07,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:07,319 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:07,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:42:07,319 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1375479745, now seen corresponding path program 1 times [2021-11-20 05:42:07,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12142310] [2021-11-20 05:42:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:07,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12142310] [2021-11-20 05:42:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12142310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:07,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977246261] [2021-11-20 05:42:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:07,365 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:07,484 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2021-11-20 05:42:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:42:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 05:42:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:07,486 INFO L225 Difference]: With dead ends: 166 [2021-11-20 05:42:07,486 INFO L226 Difference]: Without dead ends: 166 [2021-11-20 05:42:07,488 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:07,490 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 20 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:07,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 288 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:42:07,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-20 05:42:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-11-20 05:42:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.34375) internal successors, (172), 161 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2021-11-20 05:42:07,498 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 26 [2021-11-20 05:42:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:07,498 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2021-11-20 05:42:07,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2021-11-20 05:42:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:42:07,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:07,503 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:42:07,504 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -752171090, now seen corresponding path program 1 times [2021-11-20 05:42:07,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063823853] [2021-11-20 05:42:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:07,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:07,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:07,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063823853] [2021-11-20 05:42:07,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063823853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:07,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:07,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680413202] [2021-11-20 05:42:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:07,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:07,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:07,584 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:07,758 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-11-20 05:42:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:42:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-20 05:42:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:07,764 INFO L225 Difference]: With dead ends: 161 [2021-11-20 05:42:07,764 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:42:07,765 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:07,765 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 6 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:07,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 317 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:42:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-20 05:42:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.3359375) internal successors, (171), 160 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2021-11-20 05:42:07,771 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 28 [2021-11-20 05:42:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:07,771 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2021-11-20 05:42:07,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2021-11-20 05:42:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:42:07,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:07,772 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:07,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:42:07,773 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -752171089, now seen corresponding path program 1 times [2021-11-20 05:42:07,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:07,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659285628] [2021-11-20 05:42:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:07,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:07,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:07,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659285628] [2021-11-20 05:42:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659285628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:07,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:07,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:07,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265898467] [2021-11-20 05:42:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:07,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:07,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:07,843 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:08,042 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2021-11-20 05:42:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:42:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-20 05:42:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:08,044 INFO L225 Difference]: With dead ends: 160 [2021-11-20 05:42:08,044 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 05:42:08,044 INFO L932 BasicCegarLoop]: 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 [2021-11-20 05:42:08,045 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 2 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:08,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 307 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:08,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 05:42:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-20 05:42:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 128 states have (on average 1.328125) internal successors, (170), 159 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2021-11-20 05:42:08,051 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 28 [2021-11-20 05:42:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:08,051 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2021-11-20 05:42:08,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2021-11-20 05:42:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:42:08,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:08,053 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:08,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 05:42:08,054 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:08,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1361877815, now seen corresponding path program 1 times [2021-11-20 05:42:08,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:08,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400352559] [2021-11-20 05:42:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:08,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:08,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:08,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400352559] [2021-11-20 05:42:08,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400352559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:08,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:08,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:42:08,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316489793] [2021-11-20 05:42:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:08,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:08,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:08,123 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:08,257 INFO L93 Difference]: Finished difference Result 159 states and 168 transitions. [2021-11-20 05:42:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:42:08,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-20 05:42:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:08,259 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:42:08,259 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 05:42:08,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:08,260 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 15 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:08,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 248 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:42:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 05:42:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-11-20 05:42:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.31496062992126) internal successors, (167), 157 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) [2021-11-20 05:42:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 167 transitions. [2021-11-20 05:42:08,266 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 167 transitions. Word has length 29 [2021-11-20 05:42:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:08,266 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 167 transitions. [2021-11-20 05:42:08,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 167 transitions. [2021-11-20 05:42:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:42:08,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:08,268 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:08,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 05:42:08,268 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1200575117, now seen corresponding path program 1 times [2021-11-20 05:42:08,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:08,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040435275] [2021-11-20 05:42:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:08,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:08,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:08,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040435275] [2021-11-20 05:42:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040435275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:08,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:42:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450017043] [2021-11-20 05:42:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:08,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:42:08,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:42:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:42:08,480 INFO L87 Difference]: Start difference. First operand 158 states and 167 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:09,260 INFO L93 Difference]: Finished difference Result 200 states and 209 transitions. [2021-11-20 05:42:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:42:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 05:42:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:09,262 INFO L225 Difference]: With dead ends: 200 [2021-11-20 05:42:09,263 INFO L226 Difference]: Without dead ends: 200 [2021-11-20 05:42:09,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-11-20 05:42:09,264 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 380 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:09,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 266 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-20 05:42:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 158. [2021-11-20 05:42:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 157 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2021-11-20 05:42:09,271 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 31 [2021-11-20 05:42:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:09,271 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2021-11-20 05:42:09,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2021-11-20 05:42:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:42:09,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:09,274 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:09,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 05:42:09,274 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2047381958, now seen corresponding path program 1 times [2021-11-20 05:42:09,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:09,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048290812] [2021-11-20 05:42:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:09,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:09,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:09,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048290812] [2021-11-20 05:42:09,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048290812] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:42:09,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320228419] [2021-11-20 05:42:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:09,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:09,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:42:09,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:42:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:09,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:42:09,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:42:09,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:42:09,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320228419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:09,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:42:09,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2021-11-20 05:42:09,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303883372] [2021-11-20 05:42:09,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:09,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:42:09,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:42:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:09,599 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:09,648 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-20 05:42:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:09,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 05:42:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:09,651 INFO L225 Difference]: With dead ends: 160 [2021-11-20 05:42:09,651 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 05:42:09,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:09,653 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 72 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:09,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 121 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:42:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 05:42:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-20 05:42:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 129 states have (on average 1.302325581395349) internal successors, (168), 159 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2021-11-20 05:42:09,664 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 31 [2021-11-20 05:42:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:09,665 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2021-11-20 05:42:09,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2021-11-20 05:42:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:42:09,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:09,666 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:09,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:09,880 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 739766256, now seen corresponding path program 1 times [2021-11-20 05:42:09,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:09,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643851805] [2021-11-20 05:42:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:09,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:10,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:10,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643851805] [2021-11-20 05:42:10,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643851805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:10,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:10,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:42:10,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385136075] [2021-11-20 05:42:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:10,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:42:10,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:42:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:42:10,006 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:10,322 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-20 05:42:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:42:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 05:42:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:10,323 INFO L225 Difference]: With dead ends: 160 [2021-11-20 05:42:10,324 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 05:42:10,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:42:10,325 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 61 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:10,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 268 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:42:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 05:42:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-11-20 05:42:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 129 states have (on average 1.2945736434108528) internal successors, (167), 158 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) [2021-11-20 05:42:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2021-11-20 05:42:10,332 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 32 [2021-11-20 05:42:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2021-11-20 05:42:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2021-11-20 05:42:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:42:10,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:10,334 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:10,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 05:42:10,334 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 739766257, now seen corresponding path program 1 times [2021-11-20 05:42:10,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:10,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933548788] [2021-11-20 05:42:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:10,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:10,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933548788] [2021-11-20 05:42:10,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933548788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:10,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:10,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:42:10,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452495844] [2021-11-20 05:42:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:10,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:42:10,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:42:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:10,501 INFO L87 Difference]: Start difference. First operand 159 states and 167 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:11,079 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2021-11-20 05:42:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:42:11,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 05:42:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:11,083 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:42:11,084 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:42:11,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:42:11,085 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 71 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:11,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 463 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:42:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:42:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 143. [2021-11-20 05:42:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 120 states have (on average 1.25) internal successors, (150), 142 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2021-11-20 05:42:11,091 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 32 [2021-11-20 05:42:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:11,091 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2021-11-20 05:42:11,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2021-11-20 05:42:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:42:11,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:11,093 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:11,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 05:42:11,093 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash -439030339, now seen corresponding path program 1 times [2021-11-20 05:42:11,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:11,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395996039] [2021-11-20 05:42:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:11,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:11,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:11,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395996039] [2021-11-20 05:42:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395996039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:42:11,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124700191] [2021-11-20 05:42:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:11,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:11,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:42:11,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:42:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:11,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:42:11,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:11,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:42:11,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 05:42:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:42:11,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:42:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124700191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:11,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:42:11,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-11-20 05:42:11,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913603020] [2021-11-20 05:42:11,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:11,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:11,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:11,388 INFO L87 Difference]: Start difference. First operand 143 states and 150 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:11,490 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2021-11-20 05:42:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:42:11,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 05:42:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:11,494 INFO L225 Difference]: With dead ends: 152 [2021-11-20 05:42:11,494 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 05:42:11,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:42:11,496 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 6 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:11,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 266 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:42:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 05:42:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-11-20 05:42:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 123 states have (on average 1.2439024390243902) internal successors, (153), 145 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2021-11-20 05:42:11,502 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 33 [2021-11-20 05:42:11,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:11,502 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2021-11-20 05:42:11,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2021-11-20 05:42:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:42:11,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:11,504 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:11,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:11,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:11,719 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1958129913, now seen corresponding path program 1 times [2021-11-20 05:42:11,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:11,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913727363] [2021-11-20 05:42:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:11,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:11,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:42:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913727363] [2021-11-20 05:42:11,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913727363] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:42:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471897992] [2021-11-20 05:42:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:11,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:11,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:11,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:42:11,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:42:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:11,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:42:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:12,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:12,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:12,044 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 05:42:12,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:42:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:12,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:42:12,126 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-20 05:42:12,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:42:12,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:12,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:12,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:42:12,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:42:12,450 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 05:42:12,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-20 05:42:12,458 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 05:42:12,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-20 05:42:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:42:12,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:42:12,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471897992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:42:12,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:42:12,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 10 [2021-11-20 05:42:12,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689105121] [2021-11-20 05:42:12,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:42:12,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:42:12,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:42:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:42:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:42:12,727 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:13,480 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2021-11-20 05:42:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:42:13,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-11-20 05:42:13,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:13,485 INFO L225 Difference]: With dead ends: 199 [2021-11-20 05:42:13,485 INFO L226 Difference]: Without dead ends: 199 [2021-11-20 05:42:13,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:42:13,487 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:13,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 497 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-20 05:42:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2021-11-20 05:42:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 156 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2021-11-20 05:42:13,502 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 34 [2021-11-20 05:42:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:13,502 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2021-11-20 05:42:13,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2021-11-20 05:42:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 05:42:13,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:13,515 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:42:13,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:42:13,731 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 572484811, now seen corresponding path program 1 times [2021-11-20 05:42:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:42:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806523883] [2021-11-20 05:42:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:42:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:13,754 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:42:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:42:13,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:42:13,819 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:42:13,820 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK (76 of 77 remaining) [2021-11-20 05:42:13,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (75 of 77 remaining) [2021-11-20 05:42:13,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (74 of 77 remaining) [2021-11-20 05:42:13,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (73 of 77 remaining) [2021-11-20 05:42:13,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (72 of 77 remaining) [2021-11-20 05:42:13,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (71 of 77 remaining) [2021-11-20 05:42:13,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (70 of 77 remaining) [2021-11-20 05:42:13,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (69 of 77 remaining) [2021-11-20 05:42:13,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (68 of 77 remaining) [2021-11-20 05:42:13,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (67 of 77 remaining) [2021-11-20 05:42:13,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (66 of 77 remaining) [2021-11-20 05:42:13,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (65 of 77 remaining) [2021-11-20 05:42:13,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (64 of 77 remaining) [2021-11-20 05:42:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (63 of 77 remaining) [2021-11-20 05:42:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (62 of 77 remaining) [2021-11-20 05:42:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (61 of 77 remaining) [2021-11-20 05:42:13,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (60 of 77 remaining) [2021-11-20 05:42:13,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (59 of 77 remaining) [2021-11-20 05:42:13,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (58 of 77 remaining) [2021-11-20 05:42:13,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (57 of 77 remaining) [2021-11-20 05:42:13,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (56 of 77 remaining) [2021-11-20 05:42:13,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (55 of 77 remaining) [2021-11-20 05:42:13,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (54 of 77 remaining) [2021-11-20 05:42:13,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (53 of 77 remaining) [2021-11-20 05:42:13,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (52 of 77 remaining) [2021-11-20 05:42:13,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (51 of 77 remaining) [2021-11-20 05:42:13,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (50 of 77 remaining) [2021-11-20 05:42:13,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (49 of 77 remaining) [2021-11-20 05:42:13,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (48 of 77 remaining) [2021-11-20 05:42:13,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (47 of 77 remaining) [2021-11-20 05:42:13,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (46 of 77 remaining) [2021-11-20 05:42:13,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (45 of 77 remaining) [2021-11-20 05:42:13,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (44 of 77 remaining) [2021-11-20 05:42:13,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (43 of 77 remaining) [2021-11-20 05:42:13,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (42 of 77 remaining) [2021-11-20 05:42:13,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (41 of 77 remaining) [2021-11-20 05:42:13,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (40 of 77 remaining) [2021-11-20 05:42:13,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (39 of 77 remaining) [2021-11-20 05:42:13,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (38 of 77 remaining) [2021-11-20 05:42:13,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (37 of 77 remaining) [2021-11-20 05:42:13,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (36 of 77 remaining) [2021-11-20 05:42:13,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (35 of 77 remaining) [2021-11-20 05:42:13,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (34 of 77 remaining) [2021-11-20 05:42:13,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (33 of 77 remaining) [2021-11-20 05:42:13,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK (32 of 77 remaining) [2021-11-20 05:42:13,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (31 of 77 remaining) [2021-11-20 05:42:13,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK (30 of 77 remaining) [2021-11-20 05:42:13,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (29 of 77 remaining) [2021-11-20 05:42:13,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (28 of 77 remaining) [2021-11-20 05:42:13,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK (27 of 77 remaining) [2021-11-20 05:42:13,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (26 of 77 remaining) [2021-11-20 05:42:13,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (25 of 77 remaining) [2021-11-20 05:42:13,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (24 of 77 remaining) [2021-11-20 05:42:13,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (23 of 77 remaining) [2021-11-20 05:42:13,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK (22 of 77 remaining) [2021-11-20 05:42:13,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION (21 of 77 remaining) [2021-11-20 05:42:13,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (20 of 77 remaining) [2021-11-20 05:42:13,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK (19 of 77 remaining) [2021-11-20 05:42:13,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION (18 of 77 remaining) [2021-11-20 05:42:13,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (17 of 77 remaining) [2021-11-20 05:42:13,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (16 of 77 remaining) [2021-11-20 05:42:13,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (15 of 77 remaining) [2021-11-20 05:42:13,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (14 of 77 remaining) [2021-11-20 05:42:13,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (13 of 77 remaining) [2021-11-20 05:42:13,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE (12 of 77 remaining) [2021-11-20 05:42:13,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE (11 of 77 remaining) [2021-11-20 05:42:13,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE (10 of 77 remaining) [2021-11-20 05:42:13,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION (9 of 77 remaining) [2021-11-20 05:42:13,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION (8 of 77 remaining) [2021-11-20 05:42:13,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (7 of 77 remaining) [2021-11-20 05:42:13,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_FREE (6 of 77 remaining) [2021-11-20 05:42:13,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_FREE (5 of 77 remaining) [2021-11-20 05:42:13,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION (4 of 77 remaining) [2021-11-20 05:42:13,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION (3 of 77 remaining) [2021-11-20 05:42:13,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE (2 of 77 remaining) [2021-11-20 05:42:13,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE (1 of 77 remaining) [2021-11-20 05:42:13,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE (0 of 77 remaining) [2021-11-20 05:42:13,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 05:42:13,849 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:13,855 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:42:13,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:42:13 BoogieIcfgContainer [2021-11-20 05:42:13,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:42:13,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:42:13,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:42:13,934 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:42:13,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:58" (3/4) ... [2021-11-20 05:42:13,938 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:42:13,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:42:13,944 INFO L158 Benchmark]: Toolchain (without parser) took 16926.61ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 50.7MB in the beginning and 92.3MB in the end (delta: -41.5MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,945 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:42:13,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 694.51ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.5MB in the beginning and 96.3MB in the end (delta: -45.8MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.31ms. Allocated memory is still 125.8MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,946 INFO L158 Benchmark]: Boogie Preprocessor took 72.92ms. Allocated memory is still 125.8MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,946 INFO L158 Benchmark]: RCFGBuilder took 997.92ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 69.6MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,947 INFO L158 Benchmark]: TraceAbstraction took 15019.83ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 69.6MB in the beginning and 93.3MB in the end (delta: -23.7MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-11-20 05:42:13,947 INFO L158 Benchmark]: Witness Printer took 12.55ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 92.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:42:13,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 694.51ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.5MB in the beginning and 96.3MB in the end (delta: -45.8MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.31ms. Allocated memory is still 125.8MB. Free memory was 95.6MB in the beginning and 93.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.92ms. Allocated memory is still 125.8MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 997.92ms. Allocated memory is still 125.8MB. Free memory was 91.4MB in the beginning and 69.6MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 15019.83ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 69.6MB in the beginning and 93.3MB in the end (delta: -23.7MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Witness Printer took 12.55ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 92.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={-1:0}] [L1000] null->prev = ((void*)0) VAL [null={-1:0}] [L1001] null->colour = BLACK VAL [null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={-2:0}, null={-1:0}] [L1005] list->prev = null VAL [list={-2:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={-2:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={-2:0}, end->next={-1:0}, list={-2:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list={-2:0}, list->colour=1, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list={-2:0}, list->next={-1:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, null={-1:0}] - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 166 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3082 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3082 mSDsluCounter, 6166 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3917 mSDsCounter, 315 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5588 IncrementalHoareTripleChecker+Invalid, 5903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 315 mSolverCounterUnsat, 2249 mSDtfsCounter, 5588 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=0, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 353 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 657 ConstructedInterpolants, 0 QuantifiedInterpolants, 5015 SizeOfPredicates, 20 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 30 InterpolantComputations, 22 PerfectInterpolantSequences, 10/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:42:14,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:42:16,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:42:16,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:42:17,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:42:17,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:42:17,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:42:17,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:42:17,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:42:17,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:42:17,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:42:17,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:42:17,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:42:17,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:42:17,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:42:17,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:42:17,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:42:17,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:42:17,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:42:17,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:42:17,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:42:17,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:42:17,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:42:17,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:42:17,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:42:17,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:42:17,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:42:17,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:42:17,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:42:17,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:42:17,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:42:17,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:42:17,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:42:17,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:42:17,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:42:17,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:42:17,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:42:17,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:42:17,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:42:17,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:42:17,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:42:17,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:42:17,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:42:17,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:42:17,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:42:17,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:42:17,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:42:17,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:42:17,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:42:17,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:42:17,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:42:17,183 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:42:17,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:42:17,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:42:17,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:42:17,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:42:17,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:42:17,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:42:17,186 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:42:17,186 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:42:17,186 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:42:17,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:42:17,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:42:17,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:42:17,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:42:17,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:42:17,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:42:17,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:42:17,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:42:17,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:42:17,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:42:17,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:42:17,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:42:17,190 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:42:17,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:42:17,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:42:17,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:42:17,191 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-11-20 05:42:17,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:42:17,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:42:17,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:42:17,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:42:17,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:42:17,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-11-20 05:42:17,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/b6b1b16fb/6b5d43eea57d49d3a5e6ada58d7c80e8/FLAGd9cf0542e [2021-11-20 05:42:18,514 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:42:18,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-11-20 05:42:18,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/b6b1b16fb/6b5d43eea57d49d3a5e6ada58d7c80e8/FLAGd9cf0542e [2021-11-20 05:42:18,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/data/b6b1b16fb/6b5d43eea57d49d3a5e6ada58d7c80e8 [2021-11-20 05:42:18,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:42:18,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:42:18,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:42:18,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:42:18,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:42:18,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:18" (1/1) ... [2021-11-20 05:42:18,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e1fdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:18, skipping insertion in model container [2021-11-20 05:42:18,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:18" (1/1) ... [2021-11-20 05:42:18,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:42:18,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:42:19,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-11-20 05:42:19,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-11-20 05:42:19,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-11-20 05:42:19,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-11-20 05:42:19,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-11-20 05:42:19,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-11-20 05:42:19,265 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-11-20 05:42:19,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:42:19,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:42:19,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-11-20 05:42:19,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-11-20 05:42:19,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-11-20 05:42:19,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-11-20 05:42:19,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-11-20 05:42:19,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-11-20 05:42:19,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-11-20 05:42:19,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:42:19,389 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:42:19,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19 WrapperNode [2021-11-20 05:42:19,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:42:19,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:42:19,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:42:19,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:42:19,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,485 INFO L137 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 164 [2021-11-20 05:42:19,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:42:19,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:42:19,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:42:19,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:42:19,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:42:19,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:42:19,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:42:19,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:42:19,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (1/1) ... [2021-11-20 05:42:19,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:42:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:42:19,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:42:19,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:42:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:42:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:42:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:42:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:42:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:42:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:42:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:42:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:42:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:42:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:42:19,767 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:42:19,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:42:20,742 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:42:20,752 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:42:20,752 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-20 05:42:20,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:20 BoogieIcfgContainer [2021-11-20 05:42:20,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:42:20,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:42:20,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:42:20,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:42:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:42:18" (1/3) ... [2021-11-20 05:42:20,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41101e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:42:20, skipping insertion in model container [2021-11-20 05:42:20,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:19" (2/3) ... [2021-11-20 05:42:20,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41101e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:42:20, skipping insertion in model container [2021-11-20 05:42:20,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:20" (3/3) ... [2021-11-20 05:42:20,766 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-11-20 05:42:20,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:42:20,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-11-20 05:42:20,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:42:20,847 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:42:20,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-11-20 05:42:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 86 states have (on average 2.244186046511628) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:42:20,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:20,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:42:20,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 05:42:20,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:20,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853907765] [2021-11-20 05:42:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:20,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:20,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:20,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:20,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:42:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:21,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:42:21,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:21,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:21,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:21,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:21,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853907765] [2021-11-20 05:42:21,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853907765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:21,120 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:21,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:42:21,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135685971] [2021-11-20 05:42:21,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:21,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:42:21,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:42:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:21,172 INFO L87 Difference]: Start difference. First operand has 164 states, 86 states have (on average 2.244186046511628) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 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) [2021-11-20 05:42:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:21,618 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2021-11-20 05:42:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:21,622 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 [2021-11-20 05:42:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:21,636 INFO L225 Difference]: With dead ends: 191 [2021-11-20 05:42:21,636 INFO L226 Difference]: Without dead ends: 187 [2021-11-20 05:42:21,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:21,643 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 149 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:21,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 110 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:42:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-20 05:42:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 159. [2021-11-20 05:42:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 85 states have (on average 1.9294117647058824) internal successors, (164), 158 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) [2021-11-20 05:42:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 164 transitions. [2021-11-20 05:42:21,699 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 164 transitions. Word has length 3 [2021-11-20 05:42:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:21,700 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 164 transitions. [2021-11-20 05:42:21,700 INFO L471 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) [2021-11-20 05:42:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 164 transitions. [2021-11-20 05:42:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 05:42:21,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:21,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 05:42:21,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:21,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:21,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 05:42:21,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:21,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612784387] [2021-11-20 05:42:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:21,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:21,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:21,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:42:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:22,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:42:22,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:22,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:22,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:22,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612784387] [2021-11-20 05:42:22,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612784387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:22,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:22,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:42:22,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948435462] [2021-11-20 05:42:22,159 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:22,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:22,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:22,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:22,162 INFO L87 Difference]: Start difference. First operand 159 states and 164 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:22,641 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2021-11-20 05:42:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 [2021-11-20 05:42:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:22,647 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:42:22,647 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:42:22,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:22,649 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:22,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 89 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:42:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-20 05:42:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 85 states have (on average 1.8941176470588235) internal successors, (161), 155 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) [2021-11-20 05:42:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2021-11-20 05:42:22,685 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 3 [2021-11-20 05:42:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:22,685 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 161 transitions. [2021-11-20 05:42:22,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 161 transitions. [2021-11-20 05:42:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:42:22,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:22,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:22,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:22,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:22,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026981, now seen corresponding path program 1 times [2021-11-20 05:42:22,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:22,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045169743] [2021-11-20 05:42:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:22,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:22,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:22,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:22,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:42:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:42:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:23,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:23,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:23,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:23,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045169743] [2021-11-20 05:42:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045169743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:23,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:23,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:42:23,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181741894] [2021-11-20 05:42:23,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:23,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:42:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:42:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:23,050 INFO L87 Difference]: Start difference. First operand 156 states and 161 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:23,426 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2021-11-20 05:42:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:42:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:42:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:23,429 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:42:23,429 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:42:23,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:42:23,432 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 133 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:23,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 95 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:42:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:42:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-11-20 05:42:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 87 states have (on average 1.8160919540229885) internal successors, (158), 150 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2021-11-20 05:42:23,447 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 7 [2021-11-20 05:42:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:23,448 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2021-11-20 05:42:23,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2021-11-20 05:42:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 05:42:23,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:23,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:23,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:23,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:23,663 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1803026982, now seen corresponding path program 1 times [2021-11-20 05:42:23,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:23,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488402187] [2021-11-20 05:42:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:23,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:23,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:23,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:42:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:23,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:42:23,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:23,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:23,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:23,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:23,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488402187] [2021-11-20 05:42:23,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488402187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:23,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:23,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:42:23,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740891823] [2021-11-20 05:42:23,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:23,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:23,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:23,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:23,875 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:24,386 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2021-11-20 05:42:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:42:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 05:42:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:24,389 INFO L225 Difference]: With dead ends: 168 [2021-11-20 05:42:24,389 INFO L226 Difference]: Without dead ends: 168 [2021-11-20 05:42:24,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:24,391 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 272 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:24,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 100 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-20 05:42:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2021-11-20 05:42:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.7234042553191489) internal successors, (162), 154 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) [2021-11-20 05:42:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2021-11-20 05:42:24,415 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 7 [2021-11-20 05:42:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:24,416 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2021-11-20 05:42:24,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:24,417 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2021-11-20 05:42:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:42:24,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:24,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:24,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:24,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:24,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:24,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1483594255, now seen corresponding path program 1 times [2021-11-20 05:42:24,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:24,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877300180] [2021-11-20 05:42:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:24,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:24,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:24,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:24,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:42:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:24,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:42:24,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:24,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:24,906 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:42:24,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 25 [2021-11-20 05:42:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:24,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:25,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877300180] [2021-11-20 05:42:25,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877300180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:25,072 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:25,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:42:25,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697704487] [2021-11-20 05:42:25,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:25,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:42:25,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:42:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:42:25,074 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-20 05:42:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:25,633 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2021-11-20 05:42:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:42:25,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 [2021-11-20 05:42:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:25,635 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:42:25,636 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:42:25,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 10 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:25,637 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 211 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:25,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 79 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:42:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:42:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-11-20 05:42:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 96 states have (on average 1.5729166666666667) internal successors, (151), 141 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2021-11-20 05:42:25,649 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 12 [2021-11-20 05:42:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:25,650 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2021-11-20 05:42:25,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-20 05:42:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2021-11-20 05:42:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:42:25,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:25,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:25,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:25,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:25,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1483594254, now seen corresponding path program 1 times [2021-11-20 05:42:25,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843066753] [2021-11-20 05:42:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:25,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:25,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:25,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:42:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:26,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:42:26,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:26,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:26,173 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:42:26,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 05:42:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:26,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:26,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843066753] [2021-11-20 05:42:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843066753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:26,573 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:26,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-20 05:42:26,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262236566] [2021-11-20 05:42:26,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:26,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:42:26,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:42:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:42:26,577 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:27,482 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2021-11-20 05:42:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:42:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 05:42:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:27,485 INFO L225 Difference]: With dead ends: 189 [2021-11-20 05:42:27,485 INFO L226 Difference]: Without dead ends: 189 [2021-11-20 05:42:27,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:42:27,487 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 247 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:27,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 138 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 84 Unchecked, 0.8s Time] [2021-11-20 05:42:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-20 05:42:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 142. [2021-11-20 05:42:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 141 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2021-11-20 05:42:27,498 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 12 [2021-11-20 05:42:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:27,499 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2021-11-20 05:42:27,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:27,499 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2021-11-20 05:42:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 05:42:27,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:27,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:27,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:27,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:27,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash 195115107, now seen corresponding path program 1 times [2021-11-20 05:42:27,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024785846] [2021-11-20 05:42:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:27,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:27,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:27,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:42:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:27,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:42:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:27,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:27,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:42:27,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2021-11-20 05:42:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:27,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:27,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:27,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024785846] [2021-11-20 05:42:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024785846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:27,995 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:27,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:42:27,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230231482] [2021-11-20 05:42:27,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:27,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:27,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:27,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:27,998 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-20 05:42:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:28,591 INFO L93 Difference]: Finished difference Result 191 states and 200 transitions. [2021-11-20 05:42:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:42:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-11-20 05:42:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:28,596 INFO L225 Difference]: With dead ends: 191 [2021-11-20 05:42:28,596 INFO L226 Difference]: Without dead ends: 191 [2021-11-20 05:42:28,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:42:28,598 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 292 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:28,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 143 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:42:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-20 05:42:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 140. [2021-11-20 05:42:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 100 states have (on average 1.49) internal successors, (149), 139 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2021-11-20 05:42:28,607 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 14 [2021-11-20 05:42:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:28,608 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2021-11-20 05:42:28,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-20 05:42:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2021-11-20 05:42:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:42:28,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:28,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:28,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:28,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:28,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1753605249, now seen corresponding path program 1 times [2021-11-20 05:42:28,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193885010] [2021-11-20 05:42:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:28,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:28,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:28,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:42:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:28,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:42:28,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:28,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:29,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:29,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:29,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193885010] [2021-11-20 05:42:29,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193885010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:29,330 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:29,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:42:29,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74744132] [2021-11-20 05:42:29,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:29,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:42:29,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:42:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:42:29,333 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:30,286 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2021-11-20 05:42:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:42:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:42:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:30,290 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:42:30,290 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 05:42:30,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:42:30,291 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 313 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:30,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 111 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:42:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 05:42:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 138. [2021-11-20 05:42:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 100 states have (on average 1.46) internal successors, (146), 137 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2021-11-20 05:42:30,299 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 15 [2021-11-20 05:42:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:30,300 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2021-11-20 05:42:30,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:30,300 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2021-11-20 05:42:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:42:30,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:30,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:30,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:30,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:30,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1751997431, now seen corresponding path program 1 times [2021-11-20 05:42:30,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:30,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186740184] [2021-11-20 05:42:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:30,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:30,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:30,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:30,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:42:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:42:30,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:30,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:30,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-20 05:42:30,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-20 05:42:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:30,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:30,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186740184] [2021-11-20 05:42:30,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186740184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:30,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:30,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:42:30,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684076365] [2021-11-20 05:42:30,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:30,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:42:30,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:42:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:42:30,769 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:31,438 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2021-11-20 05:42:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:42:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:42:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:31,440 INFO L225 Difference]: With dead ends: 137 [2021-11-20 05:42:31,441 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 05:42:31,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:42:31,442 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 7 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:31,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 322 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:42:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 05:42:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-20 05:42:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 100 states have (on average 1.45) internal successors, (145), 136 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2021-11-20 05:42:31,448 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 15 [2021-11-20 05:42:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:31,448 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2021-11-20 05:42:31,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2021-11-20 05:42:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:42:31,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:31,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:31,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:31,664 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1751997432, now seen corresponding path program 1 times [2021-11-20 05:42:31,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:31,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122994574] [2021-11-20 05:42:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:31,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:31,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:31,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:31,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:42:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:31,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:42:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:31,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:31,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:31,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 05:42:31,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 05:42:31,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 05:42:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:31,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:32,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:32,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122994574] [2021-11-20 05:42:32,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122994574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:32,258 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:32,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 05:42:32,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462255447] [2021-11-20 05:42:32,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:32,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:42:32,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:42:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:42:32,260 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:33,384 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-11-20 05:42:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:42:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 05:42:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:33,387 INFO L225 Difference]: With dead ends: 136 [2021-11-20 05:42:33,387 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 05:42:33,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:42:33,388 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 8 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:33,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 313 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:42:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 05:42:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-20 05:42:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.44) internal successors, (144), 135 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) [2021-11-20 05:42:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2021-11-20 05:42:33,395 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 15 [2021-11-20 05:42:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:33,395 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2021-11-20 05:42:33,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2021-11-20 05:42:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:42:33,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:33,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:33,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-20 05:42:33,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:33,607 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1587467776, now seen corresponding path program 1 times [2021-11-20 05:42:33,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345636238] [2021-11-20 05:42:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:33,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:33,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:33,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:42:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:33,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:42:33,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:33,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:42:33,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 05:42:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:33,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:33,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345636238] [2021-11-20 05:42:33,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345636238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:33,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:33,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-11-20 05:42:33,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647656200] [2021-11-20 05:42:33,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:42:33,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:42:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:42:33,955 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:34,754 INFO L93 Difference]: Finished difference Result 193 states and 205 transitions. [2021-11-20 05:42:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:42:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 05:42:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:34,757 INFO L225 Difference]: With dead ends: 193 [2021-11-20 05:42:34,757 INFO L226 Difference]: Without dead ends: 193 [2021-11-20 05:42:34,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:42:34,758 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 311 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:34,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 325 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:42:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-20 05:42:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 141. [2021-11-20 05:42:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 105 states have (on average 1.4190476190476191) internal successors, (149), 140 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-11-20 05:42:34,764 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 17 [2021-11-20 05:42:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:34,765 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-11-20 05:42:34,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-11-20 05:42:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:42:34,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:34,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:34,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:34,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:34,981 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2045128633, now seen corresponding path program 1 times [2021-11-20 05:42:34,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:34,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319296789] [2021-11-20 05:42:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:34,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:34,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:34,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:42:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:35,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:42:35,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:35,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:35,228 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:42:35,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 33 [2021-11-20 05:42:35,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-20 05:42:35,548 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 05:42:35,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 36 [2021-11-20 05:42:35,699 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:42:35,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2021-11-20 05:42:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:35,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:42:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:43,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:42:43,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319296789] [2021-11-20 05:42:43,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319296789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:42:43,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:42:43,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-11-20 05:42:43,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491413331] [2021-11-20 05:42:43,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:42:43,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:42:43,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:42:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:42:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:42:43,141 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 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) [2021-11-20 05:42:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:42:43,963 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-11-20 05:42:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:42:43,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 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 19 [2021-11-20 05:42:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:42:43,966 INFO L225 Difference]: With dead ends: 177 [2021-11-20 05:42:43,966 INFO L226 Difference]: Without dead ends: 177 [2021-11-20 05:42:43,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:42:43,967 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 55 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:42:43,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 532 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 311 Unchecked, 0.7s Time] [2021-11-20 05:42:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-20 05:42:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 140. [2021-11-20 05:42:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 139 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:42:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-11-20 05:42:43,973 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 19 [2021-11-20 05:42:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:42:43,974 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-11-20 05:42:43,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 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) [2021-11-20 05:42:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-11-20 05:42:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:42:43,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:42:43,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:42:43,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:42:44,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:42:44,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:42:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:42:44,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2045128634, now seen corresponding path program 1 times [2021-11-20 05:42:44,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:42:44,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495788870] [2021-11-20 05:42:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:42:44,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:42:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:42:44,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:42:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:42:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:42:44,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:42:44,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:42:44,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:42:44,468 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:42:44,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2021-11-20 05:42:44,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 05:42:44,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:42:44,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:42:44,680 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 05:42:44,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-20 05:42:44,705 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 05:42:44,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-20 05:42:44,847 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:42:44,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-20 05:42:44,857 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:42:44,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-11-20 05:42:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:42:44,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:06,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:43:06,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:43:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:07,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:07,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495788870] [2021-11-20 05:43:07,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495788870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:07,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:07,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-20 05:43:07,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33927299] [2021-11-20 05:43:07,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:07,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:43:07,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:43:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=193, Unknown=4, NotChecked=0, Total=240 [2021-11-20 05:43:07,137 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:19,262 WARN L227 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 69 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:43:27,599 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (not (= |c_ULTIMATE.start_main_~end~0#1.base| .cse0)) (= (select |c_#length| .cse0) (_ bv12 32)) (forall ((|ULTIMATE.start_main_#t~mem5#1.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem5#1.offset|) |c_ULTIMATE.start_main_~end~0#1.offset|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) (_ bv0 32)) (= (select |c_#length| |c_ULTIMATE.start_main_~end~0#1.base|) (_ bv12 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|))))))) (_ bv1 1))) (= |c_ULTIMATE.start_main_~end~0#1.offset| (_ bv0 32)) (exists ((|ULTIMATE.start_main_#t~mem5#1.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (.cse3 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem5#1.offset|))) (and (= |c_ULTIMATE.start_main_~end~0#1.offset| (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3)) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select |c_#memory_$Pointer$.base| .cse2) .cse3))))) (forall ((|ULTIMATE.start_main_#t~mem5#1.offset| (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem5#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base|) .cse4 |c_ULTIMATE.start_main_~end~0#1.offset|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base|) .cse4 |c_ULTIMATE.start_main_~end~0#1.base|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))))))) is different from false [2021-11-20 05:43:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:39,798 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2021-11-20 05:43:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 05:43:39,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 05:43:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:39,800 INFO L225 Difference]: With dead ends: 206 [2021-11-20 05:43:39,800 INFO L226 Difference]: Without dead ends: 206 [2021-11-20 05:43:39,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=302, Invalid=1100, Unknown=8, NotChecked=72, Total=1482 [2021-11-20 05:43:39,802 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 277 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:39,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 604 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 584 Invalid, 0 Unknown, 331 Unchecked, 2.6s Time] [2021-11-20 05:43:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-20 05:43:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 134. [2021-11-20 05:43:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 133 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) [2021-11-20 05:43:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2021-11-20 05:43:39,809 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 19 [2021-11-20 05:43:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:39,810 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2021-11-20 05:43:39,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2021-11-20 05:43:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 05:43:39,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:39,812 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:39,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:40,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:40,027 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1915505871, now seen corresponding path program 1 times [2021-11-20 05:43:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64149459] [2021-11-20 05:43:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:40,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:40,030 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:40,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:43:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:40,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:43:40,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:40,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:43:40,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:43:40,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:43:40,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 05:43:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:43:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:43:40,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:40,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-20 05:43:40,951 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:43:40,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 31 [2021-11-20 05:43:40,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:43:40,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 13 [2021-11-20 05:43:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:41,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:41,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64149459] [2021-11-20 05:43:41,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64149459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:43:41,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:43:41,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2021-11-20 05:43:41,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422664619] [2021-11-20 05:43:41,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:43:41,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:43:41,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:43:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:43:41,469 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:43,576 INFO L93 Difference]: Finished difference Result 185 states and 197 transitions. [2021-11-20 05:43:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:43:43,577 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2021-11-20 05:43:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:43,578 INFO L225 Difference]: With dead ends: 185 [2021-11-20 05:43:43,578 INFO L226 Difference]: Without dead ends: 185 [2021-11-20 05:43:43,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:43:43,580 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 293 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:43,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 560 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 05:43:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-20 05:43:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 141. [2021-11-20 05:43:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 111 states have (on average 1.3513513513513513) internal successors, (150), 140 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 150 transitions. [2021-11-20 05:43:43,587 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 150 transitions. Word has length 24 [2021-11-20 05:43:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:43,587 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 150 transitions. [2021-11-20 05:43:43,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 150 transitions. [2021-11-20 05:43:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 05:43:43,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:43,597 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:43,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:43,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:43,798 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1957524124, now seen corresponding path program 1 times [2021-11-20 05:43:43,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:43,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948822845] [2021-11-20 05:43:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:43,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:43,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:43,800 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:43:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:43,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:43:43,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:43,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:43:44,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 05:43:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:44,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:44,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:44,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948822845] [2021-11-20 05:43:44,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948822845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:44,269 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:44,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-11-20 05:43:44,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651085937] [2021-11-20 05:43:44,270 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:44,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:43:44,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:43:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:43:44,272 INFO L87 Difference]: Start difference. First operand 141 states and 150 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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) [2021-11-20 05:43:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:45,159 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2021-11-20 05:43:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:43:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 24 [2021-11-20 05:43:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:45,161 INFO L225 Difference]: With dead ends: 164 [2021-11-20 05:43:45,161 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 05:43:45,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:43:45,163 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 183 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:45,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 465 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:43:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 05:43:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 141. [2021-11-20 05:43:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 111 states have (on average 1.3423423423423424) internal successors, (149), 140 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-11-20 05:43:45,170 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 24 [2021-11-20 05:43:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:45,170 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-11-20 05:43:45,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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) [2021-11-20 05:43:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-11-20 05:43:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 05:43:45,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:45,172 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:45,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-20 05:43:45,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:45,387 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 915476318, now seen corresponding path program 1 times [2021-11-20 05:43:45,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:45,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658322073] [2021-11-20 05:43:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:45,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:45,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:45,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:43:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:43:45,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:45,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:43:45,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 05:43:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:45,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:45,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:45,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658322073] [2021-11-20 05:43:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658322073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:45,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:43:45,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752965288] [2021-11-20 05:43:45,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:45,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:43:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:43:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:43:45,681 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-11-20 05:43:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:46,014 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2021-11-20 05:43:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:43:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 [2021-11-20 05:43:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:46,016 INFO L225 Difference]: With dead ends: 143 [2021-11-20 05:43:46,016 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 05:43:46,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:43:46,018 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 15 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:46,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 278 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:43:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 05:43:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2021-11-20 05:43:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 138 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2021-11-20 05:43:46,024 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 24 [2021-11-20 05:43:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:46,025 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2021-11-20 05:43:46,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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) [2021-11-20 05:43:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2021-11-20 05:43:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:43:46,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:46,026 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:46,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:46,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:46,231 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash -433833013, now seen corresponding path program 1 times [2021-11-20 05:43:46,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:46,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875453599] [2021-11-20 05:43:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:46,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:46,234 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:46,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:43:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:46,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:43:46,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:46,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:43:46,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:43:46,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-20 05:43:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:46,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:46,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875453599] [2021-11-20 05:43:46,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875453599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:46,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:46,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:43:46,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113912960] [2021-11-20 05:43:46,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:46,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:43:46,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:43:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:43:46,562 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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) [2021-11-20 05:43:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:47,148 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2021-11-20 05:43:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:43:47,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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 [2021-11-20 05:43:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:47,151 INFO L225 Difference]: With dead ends: 138 [2021-11-20 05:43:47,151 INFO L226 Difference]: Without dead ends: 138 [2021-11-20 05:43:47,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:43:47,152 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 6 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:47,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 294 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:43:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-20 05:43:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-20 05:43:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 110 states have (on average 1.3272727272727274) internal successors, (146), 137 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2021-11-20 05:43:47,159 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 26 [2021-11-20 05:43:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:47,159 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2021-11-20 05:43:47,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 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) [2021-11-20 05:43:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2021-11-20 05:43:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:43:47,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:47,161 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:47,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:47,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:47,376 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash -433833012, now seen corresponding path program 1 times [2021-11-20 05:43:47,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:47,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516081425] [2021-11-20 05:43:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:47,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:47,378 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:47,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:43:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:47,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:43:47,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:47,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:43:47,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 05:43:47,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:43:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 05:43:47,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 05:43:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:47,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:47,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:47,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516081425] [2021-11-20 05:43:47,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516081425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:47,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 05:43:47,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882048864] [2021-11-20 05:43:47,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:47,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:43:47,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:43:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:43:47,874 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:49,203 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2021-11-20 05:43:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:43:49,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 05:43:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:49,205 INFO L225 Difference]: With dead ends: 137 [2021-11-20 05:43:49,205 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 05:43:49,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:43:49,206 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 5 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:49,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 431 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 05:43:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 05:43:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-20 05:43:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 136 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2021-11-20 05:43:49,213 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 26 [2021-11-20 05:43:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:49,213 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2021-11-20 05:43:49,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2021-11-20 05:43:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:43:49,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:49,215 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:49,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:49,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:49,429 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash -83332022, now seen corresponding path program 1 times [2021-11-20 05:43:49,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:49,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179323106] [2021-11-20 05:43:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:49,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:49,433 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:49,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:43:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:49,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:43:49,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:49,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:43:49,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:43:49,834 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-20 05:43:49,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 05:43:49,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:43:49,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 05:43:49,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 05:43:49,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 05:43:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:49,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:50,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:43:50,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179323106] [2021-11-20 05:43:50,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179323106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:43:50,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:43:50,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-20 05:43:50,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462627133] [2021-11-20 05:43:50,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:43:50,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:43:50,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:43:50,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:43:50,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:43:50,184 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:43:50,737 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-11-20 05:43:50,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:43:50,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 27 [2021-11-20 05:43:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:43:50,739 INFO L225 Difference]: With dead ends: 136 [2021-11-20 05:43:50,739 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 05:43:50,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:43:50,740 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 112 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:43:50,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 224 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:43:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 05:43:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2021-11-20 05:43:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 109 states have (on average 1.311926605504587) internal successors, (143), 134 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) [2021-11-20 05:43:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2021-11-20 05:43:50,746 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 27 [2021-11-20 05:43:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:43:50,746 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2021-11-20 05:43:50,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:43:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2021-11-20 05:43:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:43:50,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:43:50,748 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:43:50,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:43:50,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:43:50,963 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:43:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:43:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1522435470, now seen corresponding path program 1 times [2021-11-20 05:43:50,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:43:50,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198707542] [2021-11-20 05:43:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:43:50,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:43:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:43:50,965 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:43:50,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:43:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:43:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:43:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:43:51,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:43:51,198 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:43:51,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 21 [2021-11-20 05:43:51,393 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 05:43:51,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 40 [2021-11-20 05:43:51,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-20 05:43:51,538 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 05:43:51,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-11-20 05:43:51,628 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:43:51,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-11-20 05:43:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:43:51,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:43:59,916 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem5#1.offset| (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem5#1.offset|) |c_ULTIMATE.start_main_~end~0#1.base|))) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) |c_ULTIMATE.start_main_~null~0#1.base|))) is different from false [2021-11-20 05:44:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:00,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198707542] [2021-11-20 05:44:00,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198707542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:00,055 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:00,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 15 [2021-11-20 05:44:00,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500533863] [2021-11-20 05:44:00,055 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:00,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:44:00,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:44:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=4, NotChecked=24, Total=210 [2021-11-20 05:44:00,057 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:05,201 INFO L93 Difference]: Finished difference Result 186 states and 197 transitions. [2021-11-20 05:44:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:44:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-20 05:44:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:05,204 INFO L225 Difference]: With dead ends: 186 [2021-11-20 05:44:05,204 INFO L226 Difference]: Without dead ends: 186 [2021-11-20 05:44:05,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=4, NotChecked=26, Total=240 [2021-11-20 05:44:05,205 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 53 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:05,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 486 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 228 Unchecked, 1.0s Time] [2021-11-20 05:44:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-20 05:44:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 152. [2021-11-20 05:44:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 151 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2021-11-20 05:44:05,212 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 29 [2021-11-20 05:44:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:05,213 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2021-11-20 05:44:05,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2021-11-20 05:44:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:44:05,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:05,215 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:05,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:05,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:05,431 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -296461252, now seen corresponding path program 1 times [2021-11-20 05:44:05,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979682074] [2021-11-20 05:44:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:05,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:05,435 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:05,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:44:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:05,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:44:05,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:44:05,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:44:05,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-20 05:44:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:44:05,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:44:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:44:05,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:05,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979682074] [2021-11-20 05:44:05,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979682074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:05,821 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:05,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:44:05,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237212125] [2021-11-20 05:44:05,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:05,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:44:05,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:44:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:44:05,823 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:06,179 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-20 05:44:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:44:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-20 05:44:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:06,183 INFO L225 Difference]: With dead ends: 161 [2021-11-20 05:44:06,183 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:44:06,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:44:06,184 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 14 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:06,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 365 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:44:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:44:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2021-11-20 05:44:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.2713178294573644) internal successors, (164), 154 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2021-11-20 05:44:06,191 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 30 [2021-11-20 05:44:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:06,191 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2021-11-20 05:44:06,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2021-11-20 05:44:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:44:06,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:06,193 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:06,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:06,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:06,408 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash -275466542, now seen corresponding path program 1 times [2021-11-20 05:44:06,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:06,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964119142] [2021-11-20 05:44:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:06,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:06,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:06,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:06,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:44:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:06,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:44:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:44:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:44:06,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:44:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:44:06,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964119142] [2021-11-20 05:44:06,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964119142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:06,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:06,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:44:06,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636338607] [2021-11-20 05:44:06,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:06,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:44:06,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:44:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:44:06,724 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:06,865 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2021-11-20 05:44:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:44:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2021-11-20 05:44:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:06,868 INFO L225 Difference]: With dead ends: 157 [2021-11-20 05:44:06,868 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 05:44:06,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:44:06,869 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 65 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:06,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 119 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:44:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 05:44:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-20 05:44:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 131 states have (on average 1.2671755725190839) internal successors, (166), 156 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2021-11-20 05:44:06,875 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 30 [2021-11-20 05:44:06,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:06,876 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2021-11-20 05:44:06,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2021-11-20 05:44:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:44:06,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:06,877 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:06,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:07,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:07,078 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2127502605, now seen corresponding path program 1 times [2021-11-20 05:44:07,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:07,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398942362] [2021-11-20 05:44:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:07,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:07,080 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:07,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:44:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:07,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:44:07,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:44:07,348 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:44:07,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 27 [2021-11-20 05:44:07,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 05:44:07,566 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 05:44:07,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2021-11-20 05:44:07,684 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:44:07,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 38 [2021-11-20 05:44:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:07,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:44:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:14,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398942362] [2021-11-20 05:44:14,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398942362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:14,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:14,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-11-20 05:44:14,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061158435] [2021-11-20 05:44:14,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:14,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:44:14,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:44:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-11-20 05:44:14,044 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 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) [2021-11-20 05:44:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:14,737 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-11-20 05:44:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:44:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 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 30 [2021-11-20 05:44:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:14,739 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:44:14,739 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:44:14,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-11-20 05:44:14,740 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 45 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:14,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 406 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 202 Unchecked, 0.7s Time] [2021-11-20 05:44:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:44:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-20 05:44:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 155 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2021-11-20 05:44:14,747 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 30 [2021-11-20 05:44:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2021-11-20 05:44:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 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) [2021-11-20 05:44:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2021-11-20 05:44:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:44:14,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:14,749 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:14,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:14,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:14,984 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2127502606, now seen corresponding path program 1 times [2021-11-20 05:44:14,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:14,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810198125] [2021-11-20 05:44:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:14,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:14,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:14,987 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:14,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 05:44:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:15,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:44:15,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:44:15,243 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:44:15,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2021-11-20 05:44:15,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 05:44:15,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:44:15,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:44:15,433 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 05:44:15,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-20 05:44:15,455 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 05:44:15,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-20 05:44:15,571 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:44:15,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-20 05:44:15,584 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 05:44:15,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-11-20 05:44:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:15,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:44:33,363 WARN L227 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:44:33,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:44:33,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:44:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:33,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:33,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810198125] [2021-11-20 05:44:33,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810198125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:33,599 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:33,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-20 05:44:33,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746443165] [2021-11-20 05:44:33,600 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:33,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:44:33,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:44:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-11-20 05:44:33,602 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 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) [2021-11-20 05:44:39,689 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (not (= |c_ULTIMATE.start_main_~end~0#1.base| .cse0)) (= (select |c_#length| .cse0) (_ bv12 32)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) (_ bv0 32)) (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_main_~end~0#1.base|)) (bvule |c_ULTIMATE.start_main_~end~0#1.offset| .cse1) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|)) (_ bv1 1))) (forall ((|ULTIMATE.start_main_#t~mem9#1.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem9#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem9#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem9#1.offset|) |c_ULTIMATE.start_main_~end~0#1.offset|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (forall ((|ULTIMATE.start_main_#t~mem9#1.offset| (_ BitVec 32))) (let ((.cse3 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem9#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem9#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem9#1.base|) .cse3 |c_ULTIMATE.start_main_~end~0#1.offset|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem9#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem9#1.base|) .cse3 |c_ULTIMATE.start_main_~end~0#1.base|)) |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))))) (exists ((|ULTIMATE.start_main_#t~mem9#1.offset| (_ BitVec 32))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem9#1.offset|))) (and (= |c_ULTIMATE.start_main_~end~0#1.offset| (select (select |c_#memory_$Pointer$.offset| .cse4) .cse5)) (= (select (select |c_#memory_$Pointer$.base| .cse4) .cse5) |c_ULTIMATE.start_main_~end~0#1.base|)))))) is different from false [2021-11-20 05:44:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:40,883 INFO L93 Difference]: Finished difference Result 187 states and 198 transitions. [2021-11-20 05:44:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:44:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 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 30 [2021-11-20 05:44:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:40,886 INFO L225 Difference]: With dead ends: 187 [2021-11-20 05:44:40,886 INFO L226 Difference]: Without dead ends: 187 [2021-11-20 05:44:40,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=4, NotChecked=40, Total=506 [2021-11-20 05:44:40,887 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 114 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:40,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 599 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 520 Invalid, 0 Unknown, 88 Unchecked, 2.2s Time] [2021-11-20 05:44:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-20 05:44:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 154. [2021-11-20 05:44:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 131 states have (on average 1.2442748091603053) internal successors, (163), 153 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2021-11-20 05:44:40,894 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 30 [2021-11-20 05:44:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:40,894 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2021-11-20 05:44:40,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 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) [2021-11-20 05:44:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2021-11-20 05:44:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:44:40,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:40,896 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:40,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:41,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:41,111 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1259070453, now seen corresponding path program 1 times [2021-11-20 05:44:41,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872437600] [2021-11-20 05:44:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:41,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:41,113 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:41,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 05:44:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:41,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:44:41,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:44:41,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 05:44:41,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 05:44:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:41,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:44:42,161 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-20 05:44:42,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-20 05:44:42,173 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-20 05:44:42,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 05:44:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:42,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:44:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872437600] [2021-11-20 05:44:42,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872437600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:44:42,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:44:42,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-11-20 05:44:42,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529397423] [2021-11-20 05:44:42,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:44:42,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 05:44:42,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:44:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 05:44:42,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:44:42,340 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:44:45,021 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2021-11-20 05:44:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:44:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2021-11-20 05:44:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:44:45,024 INFO L225 Difference]: With dead ends: 199 [2021-11-20 05:44:45,024 INFO L226 Difference]: Without dead ends: 199 [2021-11-20 05:44:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:44:45,025 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 264 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:44:45,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 565 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 05:44:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-20 05:44:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2021-11-20 05:44:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 164 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2021-11-20 05:44:45,048 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 33 [2021-11-20 05:44:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:44:45,049 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2021-11-20 05:44:45,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2021-11-20 05:44:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:44:45,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:44:45,050 INFO L514 BasicCegarLoop]: 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] [2021-11-20 05:44:45,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:45,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:45,268 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 73 more)] === [2021-11-20 05:44:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash 376478029, now seen corresponding path program 1 times [2021-11-20 05:44:45,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:44:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012371947] [2021-11-20 05:44:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:45,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:44:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:44:45,271 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:44:45,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 05:44:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:44:45,448 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:44:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:44:45,639 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 05:44:45,639 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:44:45,640 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK (76 of 77 remaining) [2021-11-20 05:44:45,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (75 of 77 remaining) [2021-11-20 05:44:45,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (74 of 77 remaining) [2021-11-20 05:44:45,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (73 of 77 remaining) [2021-11-20 05:44:45,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (72 of 77 remaining) [2021-11-20 05:44:45,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (71 of 77 remaining) [2021-11-20 05:44:45,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (70 of 77 remaining) [2021-11-20 05:44:45,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (69 of 77 remaining) [2021-11-20 05:44:45,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (68 of 77 remaining) [2021-11-20 05:44:45,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (67 of 77 remaining) [2021-11-20 05:44:45,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (66 of 77 remaining) [2021-11-20 05:44:45,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (65 of 77 remaining) [2021-11-20 05:44:45,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (64 of 77 remaining) [2021-11-20 05:44:45,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (63 of 77 remaining) [2021-11-20 05:44:45,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (62 of 77 remaining) [2021-11-20 05:44:45,646 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (61 of 77 remaining) [2021-11-20 05:44:45,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (60 of 77 remaining) [2021-11-20 05:44:45,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (59 of 77 remaining) [2021-11-20 05:44:45,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (58 of 77 remaining) [2021-11-20 05:44:45,647 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (57 of 77 remaining) [2021-11-20 05:44:45,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (56 of 77 remaining) [2021-11-20 05:44:45,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (55 of 77 remaining) [2021-11-20 05:44:45,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (54 of 77 remaining) [2021-11-20 05:44:45,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (53 of 77 remaining) [2021-11-20 05:44:45,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (52 of 77 remaining) [2021-11-20 05:44:45,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (51 of 77 remaining) [2021-11-20 05:44:45,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (50 of 77 remaining) [2021-11-20 05:44:45,649 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (49 of 77 remaining) [2021-11-20 05:44:45,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (48 of 77 remaining) [2021-11-20 05:44:45,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (47 of 77 remaining) [2021-11-20 05:44:45,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (46 of 77 remaining) [2021-11-20 05:44:45,650 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (45 of 77 remaining) [2021-11-20 05:44:45,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (44 of 77 remaining) [2021-11-20 05:44:45,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (43 of 77 remaining) [2021-11-20 05:44:45,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (42 of 77 remaining) [2021-11-20 05:44:45,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (41 of 77 remaining) [2021-11-20 05:44:45,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (40 of 77 remaining) [2021-11-20 05:44:45,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (39 of 77 remaining) [2021-11-20 05:44:45,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (38 of 77 remaining) [2021-11-20 05:44:45,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (37 of 77 remaining) [2021-11-20 05:44:45,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (36 of 77 remaining) [2021-11-20 05:44:45,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK (35 of 77 remaining) [2021-11-20 05:44:45,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (34 of 77 remaining) [2021-11-20 05:44:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (33 of 77 remaining) [2021-11-20 05:44:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK (32 of 77 remaining) [2021-11-20 05:44:45,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (31 of 77 remaining) [2021-11-20 05:44:45,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK (30 of 77 remaining) [2021-11-20 05:44:45,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (29 of 77 remaining) [2021-11-20 05:44:45,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (28 of 77 remaining) [2021-11-20 05:44:45,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK (27 of 77 remaining) [2021-11-20 05:44:45,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (26 of 77 remaining) [2021-11-20 05:44:45,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (25 of 77 remaining) [2021-11-20 05:44:45,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (24 of 77 remaining) [2021-11-20 05:44:45,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (23 of 77 remaining) [2021-11-20 05:44:45,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK (22 of 77 remaining) [2021-11-20 05:44:45,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION (21 of 77 remaining) [2021-11-20 05:44:45,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (20 of 77 remaining) [2021-11-20 05:44:45,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK (19 of 77 remaining) [2021-11-20 05:44:45,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION (18 of 77 remaining) [2021-11-20 05:44:45,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (17 of 77 remaining) [2021-11-20 05:44:45,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (16 of 77 remaining) [2021-11-20 05:44:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (15 of 77 remaining) [2021-11-20 05:44:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (14 of 77 remaining) [2021-11-20 05:44:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (13 of 77 remaining) [2021-11-20 05:44:45,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_FREE (12 of 77 remaining) [2021-11-20 05:44:45,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE (11 of 77 remaining) [2021-11-20 05:44:45,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE (10 of 77 remaining) [2021-11-20 05:44:45,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION (9 of 77 remaining) [2021-11-20 05:44:45,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION (8 of 77 remaining) [2021-11-20 05:44:45,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_FREE (7 of 77 remaining) [2021-11-20 05:44:45,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_FREE (6 of 77 remaining) [2021-11-20 05:44:45,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_FREE (5 of 77 remaining) [2021-11-20 05:44:45,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION (4 of 77 remaining) [2021-11-20 05:44:45,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION (3 of 77 remaining) [2021-11-20 05:44:45,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE (2 of 77 remaining) [2021-11-20 05:44:45,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE (1 of 77 remaining) [2021-11-20 05:44:45,676 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_FREE (0 of 77 remaining) [2021-11-20 05:44:45,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 05:44:45,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:44:45,895 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:45,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:44:45,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:44:45 BoogieIcfgContainer [2021-11-20 05:44:45,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:44:45,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:44:45,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:44:45,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:44:45,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:20" (3/4) ... [2021-11-20 05:44:45,981 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:44:45,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:44:45,982 INFO L158 Benchmark]: Toolchain (without parser) took 147298.29ms. Allocated memory was 75.5MB in the beginning and 130.0MB in the end (delta: 54.5MB). Free memory was 57.8MB in the beginning and 103.6MB in the end (delta: -45.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,983 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:44:45,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.81ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 38.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.27ms. Allocated memory is still 75.5MB. Free memory was 38.2MB in the beginning and 57.1MB in the end (delta: -19.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,987 INFO L158 Benchmark]: Boogie Preprocessor took 47.23ms. Allocated memory is still 75.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,988 INFO L158 Benchmark]: RCFGBuilder took 1221.17ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 55.0MB in the beginning and 84.6MB in the end (delta: -29.6MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,993 INFO L158 Benchmark]: TraceAbstraction took 145216.75ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 84.2MB in the beginning and 103.6MB in the end (delta: -19.5MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2021-11-20 05:44:45,995 INFO L158 Benchmark]: Witness Printer took 5.95ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:44:45,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.81ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 38.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.27ms. Allocated memory is still 75.5MB. Free memory was 38.2MB in the beginning and 57.1MB in the end (delta: -19.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.23ms. Allocated memory is still 75.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1221.17ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 55.0MB in the beginning and 84.6MB in the end (delta: -29.6MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * TraceAbstraction took 145216.75ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 84.2MB in the beginning and 103.6MB in the end (delta: -19.5MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. * Witness Printer took 5.95ms. Allocated memory is still 130.0MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={-2147483647:0}] [L1000] null->prev = ((void*)0) VAL [null={-2147483647:0}] [L1001] null->colour = BLACK VAL [null={-2147483647:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={3:0}, null={-2147483647:0}] [L1005] list->prev = null VAL [list={3:0}, null={-2147483647:0}] [L1006] list->colour = BLACK VAL [list={3:0}, null={-2147483647:0}] [L1008] struct TSLL* end = list; VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1042] EXPR end->colour VAL [end={3:0}, end->colour=1, list={3:0}, null={-2147483647:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={3:0}, list={3:0}, null={-2147483647:0}] [L1045] EXPR end->colour VAL [end={3:0}, end->colour=1, list={3:0}, null={-2147483647:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={3:0}, end->next={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1056] COND TRUE null != list VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1058] EXPR list->colour VAL [end={-2147483647:0}, list={3:0}, list->colour=1, null={-2147483647:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-2147483647:0}, list={3:0}, list->next={-2147483647:0}, null={-2147483647:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1068] free(list) VAL [end={-2147483647:0}, list={3:0}, null={-2147483647:0}] [L1068] free(list) [L1069] list = end VAL [end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] [L1056] COND FALSE !(null != list) VAL [end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] [L1073] return 0; VAL [\result=0, end={-2147483647:0}, list={-2147483647:0}, null={-2147483647:0}] - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 164 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 145.1s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 63.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3600 SdHoareTripleChecker+Valid, 22.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3600 mSDsluCounter, 7753 SdHoareTripleChecker+Invalid, 19.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1244 IncrementalHoareTripleChecker+Unchecked, 5498 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5704 IncrementalHoareTripleChecker+Invalid, 7295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 2255 mSDtfsCounter, 5704 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1011 GetRequests, 745 SyntacticMatches, 41 SemanticMatches, 225 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 104.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=25, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 518 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 72.5s InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 932 ConstructedInterpolants, 43 QuantifiedInterpolants, 6958 SizeOfPredicates, 121 NumberOfNonLiveVariables, 2492 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 50 InterpolantComputations, 46 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:44:46,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ded1007-3bcb-4902-a0d9-d4a7efd9ef6d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample