./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg --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 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg --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 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:52:12,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:12,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:12,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:12,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:12,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:12,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:12,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:12,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:12,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:12,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:12,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:12,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:12,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:12,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:12,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:12,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:12,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:12,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:12,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:12,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:12,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:12,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:12,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:12,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:12,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:12,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:12,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:12,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:12,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:12,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:12,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:12,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:12,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:12,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:12,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:12,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:12,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:12,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:12,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:12,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:12,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:52:12,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:12,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:12,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:12,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:12,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:12,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:12,646 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:12,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:12,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:12,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:12,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:12,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:12,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:12,648 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:52:12,648 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:52:12,648 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:52:12,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:52:12,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:52:12,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:12,649 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:12,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:12,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:12,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:52:12,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:12,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:12,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:52:12,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:52:12,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:52:12,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:12,651 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 09:52:12,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:12,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:12,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:12,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:12,951 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:12,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:52:13,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/e4a214070/b6f982fc2bc1414abf2cd78c7f08a9e7/FLAG93821fdb9 [2021-10-28 09:52:13,571 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:13,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:52:13,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/e4a214070/b6f982fc2bc1414abf2cd78c7f08a9e7/FLAG93821fdb9 [2021-10-28 09:52:13,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/e4a214070/b6f982fc2bc1414abf2cd78c7f08a9e7 [2021-10-28 09:52:13,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:13,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:52:13,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:13,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:13,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:13,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:13" (1/1) ... [2021-10-28 09:52:13,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198cf19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:13, skipping insertion in model container [2021-10-28 09:52:13,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:13" (1/1) ... [2021-10-28 09:52:13,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:13,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:14,304 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:52:14,309 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:52:14,311 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:52:14,314 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:52:14,317 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:52:14,318 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:52:14,320 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:52:14,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:14,335 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:14,369 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:52:14,370 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:52:14,371 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:52:14,372 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:52:14,373 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:52:14,374 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:52:14,375 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:52:14,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:14,409 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:14,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14 WrapperNode [2021-10-28 09:52:14,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:14,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:14,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:14,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:14,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:14,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:14,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:14,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:14,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (1/1) ... [2021-10-28 09:52:14,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:14,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:14,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:14,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:52:14,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:14,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:52:14,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:52:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:52:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:52:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:52:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:52:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:52:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:52:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:52:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:52:14,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:52:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:52:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:52:14,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:52:14,570 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:52:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:52:14,571 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:52:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:52:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:52:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:52:14,572 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:52:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:52:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:52:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:52:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:52:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:52:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:52:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:52:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:52:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:52:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:52:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:52:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:52:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:52:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:52:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:52:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:52:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:52:14,579 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:52:14,580 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:52:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:52:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:52:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:52:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:52:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:52:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:52:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:52:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:52:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:52:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:52:14,586 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:52:14,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:52:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:52:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:52:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:52:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:52:14,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:52:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:52:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:52:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:52:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:52:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:52:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:52:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:52:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:15,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:15,365 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:52:15,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:15 BoogieIcfgContainer [2021-10-28 09:52:15,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:15,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:52:15,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:52:15,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:52:15,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:52:13" (1/3) ... [2021-10-28 09:52:15,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1053c0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:15, skipping insertion in model container [2021-10-28 09:52:15,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:14" (2/3) ... [2021-10-28 09:52:15,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1053c0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:15, skipping insertion in model container [2021-10-28 09:52:15,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:15" (3/3) ... [2021-10-28 09:52:15,387 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 09:52:15,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:52:15,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-10-28 09:52:15,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:52:15,467 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 [2021-10-28 09:52:15,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-10-28 09:52:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 89 states have (on average 2.202247191011236) internal successors, (196), 166 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:52:15,495 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:15,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:15,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:15,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:15,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1463572285, now seen corresponding path program 1 times [2021-10-28 09:52:15,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:15,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143624259] [2021-10-28 09:52:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:15,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:15,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:15,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143624259] [2021-10-28 09:52:15,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143624259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:15,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:15,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:15,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817481602] [2021-10-28 09:52:15,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:15,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:15,771 INFO L87 Difference]: Start difference. First operand has 171 states, 89 states have (on average 2.202247191011236) internal successors, (196), 166 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:16,217 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2021-10-28 09:52:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:52:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:16,235 INFO L225 Difference]: With dead ends: 197 [2021-10-28 09:52:16,235 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 09:52:16,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 09:52:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 165. [2021-10-28 09:52:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 88 states have (on average 1.8977272727272727) internal successors, (167), 161 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2021-10-28 09:52:16,309 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 7 [2021-10-28 09:52:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:16,310 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2021-10-28 09:52:16,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2021-10-28 09:52:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:52:16,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:16,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:16,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:52:16,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1463572286, now seen corresponding path program 1 times [2021-10-28 09:52:16,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:16,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330814055] [2021-10-28 09:52:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:16,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:16,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:16,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330814055] [2021-10-28 09:52:16,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330814055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:16,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:16,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:16,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54291566] [2021-10-28 09:52:16,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:16,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,475 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:16,763 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2021-10-28 09:52:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:52:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:16,768 INFO L225 Difference]: With dead ends: 162 [2021-10-28 09:52:16,768 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 09:52:16,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 09:52:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-28 09:52:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 88 states have (on average 1.8636363636363635) internal successors, (164), 158 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 167 transitions. [2021-10-28 09:52:16,797 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 167 transitions. Word has length 7 [2021-10-28 09:52:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:16,814 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 167 transitions. [2021-10-28 09:52:16,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 167 transitions. [2021-10-28 09:52:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:52:16,816 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:16,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:16,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:52:16,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:16,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash 646742145, now seen corresponding path program 1 times [2021-10-28 09:52:16,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:16,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610464194] [2021-10-28 09:52:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:16,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:16,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:16,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610464194] [2021-10-28 09:52:16,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610464194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:16,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:16,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:16,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440546132] [2021-10-28 09:52:16,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:16,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,964 INFO L87 Difference]: Start difference. First operand 162 states and 167 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:17,231 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2021-10-28 09:52:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:52:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:17,234 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:52:17,234 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 09:52:17,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 09:52:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-10-28 09:52:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 90 states have (on average 1.788888888888889) internal successors, (161), 153 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 164 transitions. [2021-10-28 09:52:17,255 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 164 transitions. Word has length 11 [2021-10-28 09:52:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:17,256 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 164 transitions. [2021-10-28 09:52:17,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 164 transitions. [2021-10-28 09:52:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:52:17,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:17,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:17,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:52:17,262 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 646742146, now seen corresponding path program 1 times [2021-10-28 09:52:17,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:17,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854628383] [2021-10-28 09:52:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:17,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:17,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:17,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854628383] [2021-10-28 09:52:17,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854628383] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:17,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:17,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:17,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376795489] [2021-10-28 09:52:17,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:17,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:17,345 INFO L87 Difference]: Start difference. First operand 157 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:17,590 INFO L93 Difference]: Finished difference Result 174 states and 180 transitions. [2021-10-28 09:52:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:52:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:17,592 INFO L225 Difference]: With dead ends: 174 [2021-10-28 09:52:17,592 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 09:52:17,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:17,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 09:52:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2021-10-28 09:52:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 97 states have (on average 1.7010309278350515) internal successors, (165), 157 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 168 transitions. [2021-10-28 09:52:17,598 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 168 transitions. Word has length 11 [2021-10-28 09:52:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:17,598 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 168 transitions. [2021-10-28 09:52:17,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 168 transitions. [2021-10-28 09:52:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:17,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:17,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:17,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:52:17,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -955929302, now seen corresponding path program 1 times [2021-10-28 09:52:17,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:17,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555948930] [2021-10-28 09:52:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:17,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:17,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:17,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555948930] [2021-10-28 09:52:17,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555948930] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:17,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:52:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407382070] [2021-10-28 09:52:17,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:17,692 INFO L87 Difference]: Start difference. First operand 161 states and 168 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:17,964 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-10-28 09:52:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:52:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:17,966 INFO L225 Difference]: With dead ends: 162 [2021-10-28 09:52:17,966 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 09:52:17,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 09:52:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 148. [2021-10-28 09:52:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.5555555555555556) internal successors, (154), 144 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2021-10-28 09:52:17,972 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 17 [2021-10-28 09:52:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:17,972 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2021-10-28 09:52:17,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2021-10-28 09:52:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:17,973 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:17,973 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:17,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:52:17,974 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -955929301, now seen corresponding path program 1 times [2021-10-28 09:52:17,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:17,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900243184] [2021-10-28 09:52:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:17,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:18,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:18,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900243184] [2021-10-28 09:52:18,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900243184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:18,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:18,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:52:18,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437857107] [2021-10-28 09:52:18,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:18,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:18,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:18,081 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:18,381 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2021-10-28 09:52:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 09:52:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:18,383 INFO L225 Difference]: With dead ends: 187 [2021-10-28 09:52:18,383 INFO L226 Difference]: Without dead ends: 187 [2021-10-28 09:52:18,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-28 09:52:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 158. [2021-10-28 09:52:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 110 states have (on average 1.518181818181818) internal successors, (167), 154 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2021-10-28 09:52:18,388 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 17 [2021-10-28 09:52:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:18,389 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2021-10-28 09:52:18,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2021-10-28 09:52:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:52:18,390 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:18,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:18,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:52:18,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 474995261, now seen corresponding path program 1 times [2021-10-28 09:52:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:18,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470367978] [2021-10-28 09:52:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:18,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:18,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:18,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470367978] [2021-10-28 09:52:18,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470367978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:18,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:18,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:52:18,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86458715] [2021-10-28 09:52:18,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:18,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:18,495 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:18,810 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2021-10-28 09:52:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 09:52:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:18,813 INFO L225 Difference]: With dead ends: 201 [2021-10-28 09:52:18,813 INFO L226 Difference]: Without dead ends: 201 [2021-10-28 09:52:18,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-28 09:52:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 156. [2021-10-28 09:52:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 152 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-10-28 09:52:18,819 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 19 [2021-10-28 09:52:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-10-28 09:52:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-10-28 09:52:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:52:18,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:18,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:18,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:52:18,821 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1838316838, now seen corresponding path program 1 times [2021-10-28 09:52:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:18,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701484827] [2021-10-28 09:52:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:18,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:18,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:18,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701484827] [2021-10-28 09:52:18,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701484827] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:18,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:18,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:18,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457661396] [2021-10-28 09:52:18,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:18,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:18,898 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:19,143 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2021-10-28 09:52:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:52:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 09:52:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:19,145 INFO L225 Difference]: With dead ends: 155 [2021-10-28 09:52:19,145 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:52:19,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:52:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-28 09:52:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 151 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2021-10-28 09:52:19,149 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 20 [2021-10-28 09:52:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2021-10-28 09:52:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2021-10-28 09:52:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:52:19,150 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:19,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:19,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:52:19,151 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1838316839, now seen corresponding path program 1 times [2021-10-28 09:52:19,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:19,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277689950] [2021-10-28 09:52:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:19,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:19,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:19,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277689950] [2021-10-28 09:52:19,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277689950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:19,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:19,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:19,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166427458] [2021-10-28 09:52:19,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:19,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:19,236 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:19,508 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-10-28 09:52:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:52:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 09:52:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:19,509 INFO L225 Difference]: With dead ends: 154 [2021-10-28 09:52:19,509 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 09:52:19,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 09:52:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-28 09:52:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-10-28 09:52:19,514 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 20 [2021-10-28 09:52:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:19,514 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-10-28 09:52:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-10-28 09:52:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:52:19,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:19,515 INFO L513 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] [2021-10-28 09:52:19,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:52:19,516 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1329344305, now seen corresponding path program 1 times [2021-10-28 09:52:19,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:19,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138141569] [2021-10-28 09:52:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:19,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:19,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:19,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138141569] [2021-10-28 09:52:19,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138141569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:19,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:19,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:52:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525385417] [2021-10-28 09:52:19,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:52:19,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:52:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:52:19,688 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:20,130 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2021-10-28 09:52:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:52:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 09:52:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:20,132 INFO L225 Difference]: With dead ends: 208 [2021-10-28 09:52:20,132 INFO L226 Difference]: Without dead ends: 208 [2021-10-28 09:52:20,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:52:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-28 09:52:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 159. [2021-10-28 09:52:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 114 states have (on average 1.4385964912280702) internal successors, (164), 155 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2021-10-28 09:52:20,137 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 22 [2021-10-28 09:52:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:20,137 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2021-10-28 09:52:20,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2021-10-28 09:52:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:52:20,138 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:20,138 INFO L513 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] [2021-10-28 09:52:20,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:52:20,139 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 942465896, now seen corresponding path program 1 times [2021-10-28 09:52:20,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:20,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689191781] [2021-10-28 09:52:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:20,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:20,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:20,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689191781] [2021-10-28 09:52:20,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689191781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:20,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:20,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:52:20,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538895653] [2021-10-28 09:52:20,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:52:20,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:52:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:52:20,268 INFO L87 Difference]: Start difference. First operand 159 states and 167 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:20,689 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2021-10-28 09:52:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:52:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 09:52:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:20,691 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:52:20,691 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 09:52:20,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:52:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 09:52:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-28 09:52:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 154 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2021-10-28 09:52:20,696 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 24 [2021-10-28 09:52:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:20,697 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2021-10-28 09:52:20,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2021-10-28 09:52:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:52:20,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:20,698 INFO L513 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] [2021-10-28 09:52:20,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:52:20,698 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 942465897, now seen corresponding path program 1 times [2021-10-28 09:52:20,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:20,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848341070] [2021-10-28 09:52:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:20,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:20,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:20,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848341070] [2021-10-28 09:52:20,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848341070] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:20,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:20,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:52:20,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384048172] [2021-10-28 09:52:20,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:52:20,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:52:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:52:20,862 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:21,594 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2021-10-28 09:52:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:52:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 09:52:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:21,596 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:52:21,596 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 09:52:21,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:52:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 09:52:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2021-10-28 09:52:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.3790322580645162) internal successors, (171), 158 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 174 transitions. [2021-10-28 09:52:21,601 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 174 transitions. Word has length 24 [2021-10-28 09:52:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:21,602 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 174 transitions. [2021-10-28 09:52:21,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 174 transitions. [2021-10-28 09:52:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:52:21,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:21,603 INFO L513 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] [2021-10-28 09:52:21,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:52:21,604 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 470516267, now seen corresponding path program 1 times [2021-10-28 09:52:21,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:21,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899440692] [2021-10-28 09:52:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:21,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:21,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:21,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899440692] [2021-10-28 09:52:21,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899440692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:21,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766018247] [2021-10-28 09:52:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:21,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:21,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:21,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:52:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:52:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:21,921 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 [2021-10-28 09:52:22,014 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:52:22,014 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 [2021-10-28 09:52:22,072 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 [2021-10-28 09:52:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:22,141 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 [2021-10-28 09:52:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:22,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:22,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:22,201 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 [2021-10-28 09:52:22,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:52:22,552 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 41 treesize of output 21 [2021-10-28 09:52:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:22,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766018247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:22,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:52:22,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-28 09:52:22,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653655811] [2021-10-28 09:52:22,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:52:22,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:52:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:52:22,688 INFO L87 Difference]: Start difference. First operand 162 states and 174 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:24,037 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2021-10-28 09:52:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:52:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 09:52:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:24,040 INFO L225 Difference]: With dead ends: 226 [2021-10-28 09:52:24,040 INFO L226 Difference]: Without dead ends: 226 [2021-10-28 09:52:24,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:52:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-28 09:52:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 169. [2021-10-28 09:52:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 131 states have (on average 1.366412213740458) internal successors, (179), 165 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-28 09:52:24,046 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 182 transitions. Word has length 29 [2021-10-28 09:52:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:24,046 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-28 09:52:24,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2021-10-28 09:52:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:52:24,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:24,048 INFO L513 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] [2021-10-28 09:52:24,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:24,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:24,275 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr53ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:24,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash 428498014, now seen corresponding path program 1 times [2021-10-28 09:52:24,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:24,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482519405] [2021-10-28 09:52:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:24,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:24,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:24,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482519405] [2021-10-28 09:52:24,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482519405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:24,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:24,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:52:24,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824311523] [2021-10-28 09:52:24,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:24,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:24,402 INFO L87 Difference]: Start difference. First operand 169 states and 182 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:24,679 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-10-28 09:52:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:24,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 09:52:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:24,681 INFO L225 Difference]: With dead ends: 173 [2021-10-28 09:52:24,681 INFO L226 Difference]: Without dead ends: 173 [2021-10-28 09:52:24,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:52:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-28 09:52:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2021-10-28 09:52:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 130 states have (on average 1.353846153846154) internal successors, (176), 164 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2021-10-28 09:52:24,686 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 29 [2021-10-28 09:52:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:24,686 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2021-10-28 09:52:24,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2021-10-28 09:52:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:52:24,690 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:24,690 INFO L513 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] [2021-10-28 09:52:24,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:52:24,692 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr40ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1019922444, now seen corresponding path program 1 times [2021-10-28 09:52:24,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:24,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053254283] [2021-10-28 09:52:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:24,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:24,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:24,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053254283] [2021-10-28 09:52:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053254283] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:24,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:24,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471303596] [2021-10-28 09:52:24,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:24,757 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:24,968 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2021-10-28 09:52:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:24,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 09:52:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:24,970 INFO L225 Difference]: With dead ends: 170 [2021-10-28 09:52:24,970 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 09:52:24,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 09:52:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2021-10-28 09:52:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 162 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-10-28 09:52:24,975 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 30 [2021-10-28 09:52:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:24,975 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-10-28 09:52:24,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-10-28 09:52:24,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:52:24,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:24,976 INFO L513 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] [2021-10-28 09:52:24,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:52:24,976 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1154646554, now seen corresponding path program 1 times [2021-10-28 09:52:24,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:24,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706730006] [2021-10-28 09:52:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:24,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:25,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:25,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706730006] [2021-10-28 09:52:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706730006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:25,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:25,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:25,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080567173] [2021-10-28 09:52:25,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:25,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:25,103 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:25,386 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2021-10-28 09:52:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:52:25,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 09:52:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:25,388 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:52:25,388 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:52:25,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:52:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-10-28 09:52:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.3333333333333333) internal successors, (172), 161 states have internal predecessors, (172), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-10-28 09:52:25,393 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 32 [2021-10-28 09:52:25,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:25,394 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-10-28 09:52:25,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-10-28 09:52:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:52:25,395 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:25,395 INFO L513 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] [2021-10-28 09:52:25,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:52:25,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1154646553, now seen corresponding path program 1 times [2021-10-28 09:52:25,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:25,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45016919] [2021-10-28 09:52:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:25,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:25,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:25,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45016919] [2021-10-28 09:52:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45016919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:25,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:25,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:25,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434610851] [2021-10-28 09:52:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:25,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:25,483 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:25,728 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-10-28 09:52:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:52:25,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 09:52:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:25,730 INFO L225 Difference]: With dead ends: 164 [2021-10-28 09:52:25,730 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 09:52:25,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 09:52:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-28 09:52:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 160 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2021-10-28 09:52:25,736 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 32 [2021-10-28 09:52:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:25,736 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2021-10-28 09:52:25,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2021-10-28 09:52:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:52:25,737 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:25,737 INFO L513 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] [2021-10-28 09:52:25,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:52:25,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:25,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1914894277, now seen corresponding path program 1 times [2021-10-28 09:52:25,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:25,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189062591] [2021-10-28 09:52:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:25,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:25,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:25,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189062591] [2021-10-28 09:52:25,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189062591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:25,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:25,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:52:25,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430964595] [2021-10-28 09:52:25,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:25,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:25,817 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:26,035 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-10-28 09:52:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 09:52:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:26,037 INFO L225 Difference]: With dead ends: 163 [2021-10-28 09:52:26,037 INFO L226 Difference]: Without dead ends: 163 [2021-10-28 09:52:26,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-28 09:52:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-10-28 09:52:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.3125) internal successors, (168), 158 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2021-10-28 09:52:26,042 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2021-10-28 09:52:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:26,042 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2021-10-28 09:52:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2021-10-28 09:52:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:52:26,043 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:26,043 INFO L513 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] [2021-10-28 09:52:26,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:52:26,044 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr74ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1259434580, now seen corresponding path program 1 times [2021-10-28 09:52:26,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:26,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731999702] [2021-10-28 09:52:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:26,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:52:26,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:26,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731999702] [2021-10-28 09:52:26,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731999702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:26,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:26,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:26,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861611421] [2021-10-28 09:52:26,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:26,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:26,114 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:26,312 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2021-10-28 09:52:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 09:52:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:26,314 INFO L225 Difference]: With dead ends: 164 [2021-10-28 09:52:26,315 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 09:52:26,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 09:52:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-28 09:52:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.3076923076923077) internal successors, (170), 160 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2021-10-28 09:52:26,320 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 35 [2021-10-28 09:52:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2021-10-28 09:52:26,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2021-10-28 09:52:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:52:26,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:26,322 INFO L513 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] [2021-10-28 09:52:26,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:52:26,323 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:26,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1967527785, now seen corresponding path program 1 times [2021-10-28 09:52:26,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:26,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020002447] [2021-10-28 09:52:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:26,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:26,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:26,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020002447] [2021-10-28 09:52:26,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020002447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:26,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:26,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:52:26,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265993234] [2021-10-28 09:52:26,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:52:26,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:52:26,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:52:26,535 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:27,171 INFO L93 Difference]: Finished difference Result 202 states and 211 transitions. [2021-10-28 09:52:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:52:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 09:52:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:27,178 INFO L225 Difference]: With dead ends: 202 [2021-10-28 09:52:27,178 INFO L226 Difference]: Without dead ends: 202 [2021-10-28 09:52:27,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:52:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-28 09:52:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2021-10-28 09:52:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.3) internal successors, (169), 160 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2021-10-28 09:52:27,188 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 35 [2021-10-28 09:52:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:27,189 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2021-10-28 09:52:27,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2021-10-28 09:52:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:52:27,190 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:27,190 INFO L513 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, 1] [2021-10-28 09:52:27,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:52:27,190 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:27,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1254504805, now seen corresponding path program 1 times [2021-10-28 09:52:27,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:27,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113721351] [2021-10-28 09:52:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:27,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:27,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:27,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113721351] [2021-10-28 09:52:27,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113721351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:27,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:27,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:52:27,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460228253] [2021-10-28 09:52:27,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:52:27,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:52:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:52:27,348 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:27,718 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2021-10-28 09:52:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:52:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-10-28 09:52:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:27,720 INFO L225 Difference]: With dead ends: 164 [2021-10-28 09:52:27,720 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 09:52:27,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:52:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 09:52:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2021-10-28 09:52:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 159 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-10-28 09:52:27,726 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 36 [2021-10-28 09:52:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:27,726 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-10-28 09:52:27,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-10-28 09:52:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:52:27,727 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:27,727 INFO L513 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, 1] [2021-10-28 09:52:27,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:52:27,728 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1254504804, now seen corresponding path program 1 times [2021-10-28 09:52:27,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:27,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401909120] [2021-10-28 09:52:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:27,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:27,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:27,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401909120] [2021-10-28 09:52:27,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401909120] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:27,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:27,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:52:27,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772452114] [2021-10-28 09:52:27,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:52:27,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:52:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:52:27,884 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:28,384 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2021-10-28 09:52:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:52:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-10-28 09:52:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:28,388 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:52:28,388 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 09:52:28,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:52:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 09:52:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2021-10-28 09:52:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 143 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2021-10-28 09:52:28,394 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 36 [2021-10-28 09:52:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:28,394 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2021-10-28 09:52:28,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2021-10-28 09:52:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:52:28,395 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:28,395 INFO L513 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, 1, 1] [2021-10-28 09:52:28,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:52:28,396 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr66REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2131891079, now seen corresponding path program 1 times [2021-10-28 09:52:28,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:28,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384228757] [2021-10-28 09:52:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:28,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:28,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:28,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384228757] [2021-10-28 09:52:28,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384228757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:28,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209305670] [2021-10-28 09:52:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:28,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:28,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:28,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:28,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:52:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:28,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:52:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:28,723 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 [2021-10-28 09:52:28,785 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 [2021-10-28 09:52:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:52:28,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209305670] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:28,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:52:28,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2021-10-28 09:52:28,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264650249] [2021-10-28 09:52:28,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:28,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:52:28,812 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:28,880 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2021-10-28 09:52:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-10-28 09:52:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:28,882 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:52:28,882 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:52:28,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:52:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:52:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2021-10-28 09:52:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 146 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2021-10-28 09:52:28,888 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 37 [2021-10-28 09:52:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:28,888 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2021-10-28 09:52:28,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2021-10-28 09:52:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:52:28,889 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:28,889 INFO L513 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, 1, 1, 1, 1] [2021-10-28 09:52:28,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:52:29,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:29,103 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1019054532, now seen corresponding path program 1 times [2021-10-28 09:52:29,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:29,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275564437] [2021-10-28 09:52:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:29,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:52:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:29,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:29,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275564437] [2021-10-28 09:52:29,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275564437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:29,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817794779] [2021-10-28 09:52:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:29,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:29,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:29,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:52:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:29,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:52:29,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:29,489 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 [2021-10-28 09:52:29,494 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 [2021-10-28 09:52:29,514 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-10-28 09:52:29,524 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 09:52:29,524 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 29 treesize of output 33 [2021-10-28 09:52:29,534 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-10-28 09:52:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:29,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 09:52:29,601 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 09:52:29,601 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 [2021-10-28 09:52:29,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:29,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:29,614 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 [2021-10-28 09:52:29,900 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:52:29,901 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 [2021-10-28 09:52:29,909 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:52:29,910 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 [2021-10-28 09:52:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:52:29,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817794779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:29,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:52:29,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-28 09:52:29,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821778200] [2021-10-28 09:52:29,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:52:29,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:52:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:52:29,949 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:30,368 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-10-28 09:52:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:52:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-10-28 09:52:30,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:30,370 INFO L225 Difference]: With dead ends: 160 [2021-10-28 09:52:30,370 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 09:52:30,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:52:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 09:52:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-10-28 09:52:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 152 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 163 transitions. [2021-10-28 09:52:30,375 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 163 transitions. Word has length 38 [2021-10-28 09:52:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:30,375 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 163 transitions. [2021-10-28 09:52:30,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 163 transitions. [2021-10-28 09:52:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 09:52:30,376 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:30,377 INFO L513 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, 1, 1, 1, 1] [2021-10-28 09:52:30,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 09:52:30,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 09:52:30,591 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr76ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1525919079, now seen corresponding path program 1 times [2021-10-28 09:52:30,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:30,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705569459] [2021-10-28 09:52:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:30,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:30,608 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:30,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:30,657 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:52:30,658 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr76ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:52:30,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:52:30,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:52:30,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:52:30,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:52:30,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:52:30,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:52:30,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:52:30,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:52:30,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:52:30,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:52:30,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:52:30,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 09:52:30,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 09:52:30,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 09:52:30,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 09:52:30,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 09:52:30,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:52:30,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-10-28 09:52:30,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-10-28 09:52:30,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION [2021-10-28 09:52:30,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67REQUIRES_VIOLATION [2021-10-28 09:52:30,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71REQUIRES_VIOLATION [2021-10-28 09:52:30,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72REQUIRES_VIOLATION [2021-10-28 09:52:30,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:52:30,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 09:52:30,677 INFO L731 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] [2021-10-28 09:52:30,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:52:30,696 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:52:30,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:52:30 BoogieIcfgContainer [2021-10-28 09:52:30,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:52:30,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:52:30,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:52:30,715 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:52:30,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:15" (3/4) ... [2021-10-28 09:52:30,719 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:52:30,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:52:30,722 INFO L168 Benchmark]: Toolchain (without parser) took 16837.36 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 83.5 MB in the beginning and 41.6 MB in the end (delta: 42.0 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:30,723 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 88.1 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:30,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.01 ms. Allocated memory is still 119.5 MB. Free memory was 83.5 MB in the beginning and 87.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:30,724 INFO L168 Benchmark]: Boogie Preprocessor took 75.32 ms. Allocated memory is still 119.5 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:30,724 INFO L168 Benchmark]: RCFGBuilder took 887.38 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 55.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:30,725 INFO L168 Benchmark]: TraceAbstraction took 15336.74 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 41.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:30,725 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 146.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:30,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 88.1 MB. Free memory was 58.6 MB in the beginning and 58.6 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.01 ms. Allocated memory is still 119.5 MB. Free memory was 83.5 MB in the beginning and 87.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.32 ms. Allocated memory is still 119.5 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 887.38 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 55.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15336.74 ms. Allocated memory was 119.5 MB in the beginning and 146.8 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 41.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 146.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 4 procedures, 174 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2292 SDtfs, 3018 SDslu, 4261 SDs, 0 SdLazy, 8684 SolverSat, 347 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 365 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=0, InterpolantAutomatonStates: 198, 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, 324 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 678 ConstructedInterpolants, 3 QuantifiedInterpolants, 5275 SizeOfPredicates, 16 NumberOfNonLiveVariables, 572 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 6/13 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 [2021-10-28 09:52:30,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:52:33,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:33,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:33,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:33,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:33,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:33,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:33,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:33,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:33,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:33,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:33,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:33,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:33,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:33,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:33,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:33,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:33,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:33,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:33,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:33,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:33,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:33,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:33,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:33,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:33,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:33,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:33,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:33,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:33,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:33,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:33,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:33,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:33,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:33,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:33,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:33,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:33,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:33,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:33,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:33,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:33,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:52:33,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:33,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:33,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:33,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:33,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:33,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:33,627 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:33,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:33,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:33,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:33,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:33,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:33,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:33,629 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:52:33,630 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:52:33,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:52:33,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:52:33,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:52:33,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:52:33,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:52:33,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:33,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:33,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:33,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:33,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:52:33,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:33,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:33,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:52:33,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:52:33,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:52:33,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:33,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:52:33,634 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 09:52:34,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:34,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:34,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:34,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:34,065 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:34,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:52:34,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/14e49659e/57657f8875494b558050918ac50edb43/FLAG505f4b3d2 [2021-10-28 09:52:34,762 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:34,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 09:52:34,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/14e49659e/57657f8875494b558050918ac50edb43/FLAG505f4b3d2 [2021-10-28 09:52:35,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/data/14e49659e/57657f8875494b558050918ac50edb43 [2021-10-28 09:52:35,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:35,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:52:35,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:35,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:35,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:35,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c9a7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35, skipping insertion in model container [2021-10-28 09:52:35,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:35,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:35,573 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:52:35,582 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:52:35,583 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:52:35,585 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:52:35,586 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:52:35,592 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:52:35,594 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:52:35,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:35,628 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:35,675 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 09:52:35,676 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 09:52:35,677 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 09:52:35,678 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 09:52:35,679 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 09:52:35,680 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 09:52:35,681 WARN L228 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_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 09:52:35,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:35,718 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:35,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35 WrapperNode [2021-10-28 09:52:35,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:35,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:35,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:35,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:35,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:35,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:35,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:35,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:35,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (1/1) ... [2021-10-28 09:52:35,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:35,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:35,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:52:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:52:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:52:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:52:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:52:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:52:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:52:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:52:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:52:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:52:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:52:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:52:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:52:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:52:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:52:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:52:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:52:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:52:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:52:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:52:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:52:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:52:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:52:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:52:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:52:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:52:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:52:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:52:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:52:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:52:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:52:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:52:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:52:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:52:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:52:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:52:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:52:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:52:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:52:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:52:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:52:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:52:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:52:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:52:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:52:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:52:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:52:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:52:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:52:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:52:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:52:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:52:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:52:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:52:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:52:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:52:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:52:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:52:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:52:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:52:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:52:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:52:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:52:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:52:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:52:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:52:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:52:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:52:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:52:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:52:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:52:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:52:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:52:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:52:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:52:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:52:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:52:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:52:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:52:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:52:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:52:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:52:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:52:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:52:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:52:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:52:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:52:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:52:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:52:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:52:37,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:37,159 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:52:37,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:37 BoogieIcfgContainer [2021-10-28 09:52:37,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:37,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:52:37,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:52:37,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:52:37,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:52:35" (1/3) ... [2021-10-28 09:52:37,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965fda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:37, skipping insertion in model container [2021-10-28 09:52:37,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:35" (2/3) ... [2021-10-28 09:52:37,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965fda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:37, skipping insertion in model container [2021-10-28 09:52:37,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:37" (3/3) ... [2021-10-28 09:52:37,169 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 09:52:37,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:52:37,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-10-28 09:52:37,236 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:52:37,244 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 [2021-10-28 09:52:37,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-10-28 09:52:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 87 states have (on average 2.2298850574712645) internal successors, (194), 164 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:52:37,285 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:37,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:37,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1610416047, now seen corresponding path program 1 times [2021-10-28 09:52:37,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:37,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744681867] [2021-10-28 09:52:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:37,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:37,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:37,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:52:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:37,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:37,621 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 [2021-10-28 09:52:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:37,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:37,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:37,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744681867] [2021-10-28 09:52:37,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744681867] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:37,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:37,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:52:37,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822786689] [2021-10-28 09:52:37,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:37,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:37,749 INFO L87 Difference]: Start difference. First operand has 169 states, 87 states have (on average 2.2298850574712645) internal successors, (194), 164 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:38,170 INFO L93 Difference]: Finished difference Result 195 states and 202 transitions. [2021-10-28 09:52:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:38,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:52:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:38,181 INFO L225 Difference]: With dead ends: 195 [2021-10-28 09:52:38,181 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:52:38,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:52:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 163. [2021-10-28 09:52:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 86 states have (on average 1.9186046511627908) internal successors, (165), 159 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2021-10-28 09:52:38,227 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 7 [2021-10-28 09:52:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:38,228 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2021-10-28 09:52:38,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2021-10-28 09:52:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:52:38,229 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:38,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:38,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:38,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:38,441 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1610416046, now seen corresponding path program 1 times [2021-10-28 09:52:38,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:38,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581880970] [2021-10-28 09:52:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:38,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:38,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:38,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:52:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:38,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:52:38,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:38,664 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 [2021-10-28 09:52:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:38,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:38,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:38,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581880970] [2021-10-28 09:52:38,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581880970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:38,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:38,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:52:38,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125473606] [2021-10-28 09:52:38,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:38,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:38,794 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:39,164 INFO L93 Difference]: Finished difference Result 160 states and 165 transitions. [2021-10-28 09:52:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:39,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:52:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:39,167 INFO L225 Difference]: With dead ends: 160 [2021-10-28 09:52:39,167 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 09:52:39,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 09:52:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-28 09:52:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 86 states have (on average 1.8837209302325582) internal successors, (162), 156 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 165 transitions. [2021-10-28 09:52:39,186 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 165 transitions. Word has length 7 [2021-10-28 09:52:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:39,186 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 165 transitions. [2021-10-28 09:52:39,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 165 transitions. [2021-10-28 09:52:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:52:39,192 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:39,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:39,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:39,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:39,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash -352660203, now seen corresponding path program 1 times [2021-10-28 09:52:39,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:39,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298361501] [2021-10-28 09:52:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:39,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:39,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:52:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:39,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:39,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:39,585 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 [2021-10-28 09:52:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:39,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:39,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:39,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298361501] [2021-10-28 09:52:39,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298361501] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:39,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:39,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:52:39,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191363471] [2021-10-28 09:52:39,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:39,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:39,634 INFO L87 Difference]: Start difference. First operand 160 states and 165 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:39,929 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2021-10-28 09:52:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:39,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:52:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:39,931 INFO L225 Difference]: With dead ends: 159 [2021-10-28 09:52:39,931 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 09:52:39,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 09:52:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-10-28 09:52:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.8068181818181819) internal successors, (159), 151 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2021-10-28 09:52:39,943 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 11 [2021-10-28 09:52:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:39,944 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2021-10-28 09:52:39,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2021-10-28 09:52:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:52:39,945 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:39,945 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:39,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:40,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:40,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash -352660202, now seen corresponding path program 1 times [2021-10-28 09:52:40,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:40,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402321840] [2021-10-28 09:52:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:40,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:40,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:40,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:40,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:52:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:40,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:52:40,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:40,333 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 [2021-10-28 09:52:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:40,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:40,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:40,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402321840] [2021-10-28 09:52:40,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402321840] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:40,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:40,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:52:40,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902958537] [2021-10-28 09:52:40,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:40,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:40,418 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:40,920 INFO L93 Difference]: Finished difference Result 172 states and 178 transitions. [2021-10-28 09:52:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:40,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 09:52:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:40,922 INFO L225 Difference]: With dead ends: 172 [2021-10-28 09:52:40,922 INFO L226 Difference]: Without dead ends: 172 [2021-10-28 09:52:40,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-28 09:52:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 159. [2021-10-28 09:52:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 155 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2021-10-28 09:52:40,932 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 11 [2021-10-28 09:52:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:40,933 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2021-10-28 09:52:40,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2021-10-28 09:52:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:52:40,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:40,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:40,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:41,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:41,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2117333470, now seen corresponding path program 1 times [2021-10-28 09:52:41,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:41,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112572011] [2021-10-28 09:52:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:41,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:41,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:41,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:52:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:41,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:52:41,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:41,358 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 [2021-10-28 09:52:41,426 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:52:41,426 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 19 treesize of output 24 [2021-10-28 09:52:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:41,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:41,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:41,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112572011] [2021-10-28 09:52:41,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112572011] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:41,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:52:41,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680857905] [2021-10-28 09:52:41,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:41,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:41,545 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:41,992 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-10-28 09:52:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:41,993 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:52:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:41,994 INFO L225 Difference]: With dead ends: 160 [2021-10-28 09:52:41,994 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 09:52:41,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 09:52:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2021-10-28 09:52:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 142 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2021-10-28 09:52:42,002 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 16 [2021-10-28 09:52:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:42,002 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2021-10-28 09:52:42,003 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2021-10-28 09:52:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:52:42,003 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:42,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:42,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:42,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:42,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2117333471, now seen corresponding path program 1 times [2021-10-28 09:52:42,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:42,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738369823] [2021-10-28 09:52:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:42,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:42,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:42,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:52:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:42,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:52:42,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:42,474 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 [2021-10-28 09:52:42,577 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:52:42,578 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 [2021-10-28 09:52:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:42,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:42,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:42,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738369823] [2021-10-28 09:52:42,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738369823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:42,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:42,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-10-28 09:52:42,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133492722] [2021-10-28 09:52:42,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:52:42,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:52:42,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:52:42,980 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:44,395 INFO L93 Difference]: Finished difference Result 193 states and 204 transitions. [2021-10-28 09:52:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:52:44,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 09:52:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:44,398 INFO L225 Difference]: With dead ends: 193 [2021-10-28 09:52:44,398 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 09:52:44,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:52:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 09:52:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 145. [2021-10-28 09:52:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 141 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-10-28 09:52:44,405 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 16 [2021-10-28 09:52:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:44,406 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-10-28 09:52:44,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-10-28 09:52:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:52:44,407 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:44,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:44,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:44,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:44,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1056980816, now seen corresponding path program 1 times [2021-10-28 09:52:44,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:44,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522195392] [2021-10-28 09:52:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:44,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:44,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:44,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:44,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:52:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:44,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:52:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:44,815 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 [2021-10-28 09:52:44,848 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:52:44,851 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 17 treesize of output 17 [2021-10-28 09:52:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:44,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:44,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:44,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522195392] [2021-10-28 09:52:44,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522195392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:44,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:44,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:52:44,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111115820] [2021-10-28 09:52:44,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:44,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:44,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:44,965 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:45,352 INFO L93 Difference]: Finished difference Result 193 states and 202 transitions. [2021-10-28 09:52:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:45,353 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 09:52:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:45,355 INFO L225 Difference]: With dead ends: 193 [2021-10-28 09:52:45,355 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 09:52:45,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:52:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 09:52:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 143. [2021-10-28 09:52:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 139 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2021-10-28 09:52:45,362 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 18 [2021-10-28 09:52:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:45,363 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2021-10-28 09:52:45,363 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2021-10-28 09:52:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:52:45,364 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:45,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:45,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:45,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:45,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1591729511, now seen corresponding path program 1 times [2021-10-28 09:52:45,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:45,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698625264] [2021-10-28 09:52:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:45,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:45,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:45,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:45,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:52:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:45,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:52:45,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:45,817 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 [2021-10-28 09:52:45,832 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 [2021-10-28 09:52:45,855 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 [2021-10-28 09:52:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:45,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:45,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:45,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698625264] [2021-10-28 09:52:45,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698625264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:45,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:45,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:52:45,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537499116] [2021-10-28 09:52:45,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:45,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:45,931 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:46,409 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 09:52:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:46,410 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 09:52:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:46,411 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:52:46,411 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 09:52:46,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:52:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 09:52:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-10-28 09:52:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 138 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2021-10-28 09:52:46,416 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 19 [2021-10-28 09:52:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:46,416 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2021-10-28 09:52:46,417 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2021-10-28 09:52:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:52:46,417 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:46,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:46,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 09:52:46,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:46,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:46,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1591729512, now seen corresponding path program 1 times [2021-10-28 09:52:46,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:46,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031897950] [2021-10-28 09:52:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:46,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:46,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:46,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:46,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:52:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:52:46,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:46,867 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 [2021-10-28 09:52:46,899 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 [2021-10-28 09:52:46,916 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 [2021-10-28 09:52:46,969 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 [2021-10-28 09:52:46,973 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 [2021-10-28 09:52:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:46,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:47,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:47,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031897950] [2021-10-28 09:52:47,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031897950] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:47,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:47,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:52:47,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311015843] [2021-10-28 09:52:47,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:52:47,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:47,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:52:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:47,234 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:48,521 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2021-10-28 09:52:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:52:48,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 09:52:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:48,528 INFO L225 Difference]: With dead ends: 141 [2021-10-28 09:52:48,529 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 09:52:48,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:52:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 09:52:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-28 09:52:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 137 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-10-28 09:52:48,534 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 19 [2021-10-28 09:52:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:48,534 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-10-28 09:52:48,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-10-28 09:52:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:52:48,536 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:48,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:48,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:48,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:48,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2106147056, now seen corresponding path program 1 times [2021-10-28 09:52:48,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:48,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955798952] [2021-10-28 09:52:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:48,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:48,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:48,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:52:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:48,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:52:48,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:49,033 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 [2021-10-28 09:52:49,124 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 [2021-10-28 09:52:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:49,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:49,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:49,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955798952] [2021-10-28 09:52:49,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955798952] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:49,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:49,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-10-28 09:52:49,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661674931] [2021-10-28 09:52:49,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:52:49,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:52:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:52:49,236 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:49,806 INFO L93 Difference]: Finished difference Result 198 states and 210 transitions. [2021-10-28 09:52:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:52:49,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 09:52:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:49,808 INFO L225 Difference]: With dead ends: 198 [2021-10-28 09:52:49,808 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 09:52:49,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:52:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 09:52:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 146. [2021-10-28 09:52:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 142 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2021-10-28 09:52:49,814 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 21 [2021-10-28 09:52:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:49,815 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2021-10-28 09:52:49,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2021-10-28 09:52:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:52:49,816 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:49,816 INFO L513 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] [2021-10-28 09:52:49,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:50,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:50,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash 124262505, now seen corresponding path program 1 times [2021-10-28 09:52:50,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:50,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201570816] [2021-10-28 09:52:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:50,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:50,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:50,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:50,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:52:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:52:50,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:50,352 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 [2021-10-28 09:52:50,411 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 09:52:50,411 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 27 treesize of output 34 [2021-10-28 09:52:50,474 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 [2021-10-28 09:52:50,678 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:52:50,679 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 43 treesize of output 33 [2021-10-28 09:52:50,812 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:52:50,812 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 62 treesize of output 43 [2021-10-28 09:52:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:50,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:52,389 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))))))) (_ bv1 1)))) is different from false [2021-10-28 09:52:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:55,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:55,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201570816] [2021-10-28 09:52:55,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201570816] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:55,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:55,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 09:52:55,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127013787] [2021-10-28 09:52:55,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:52:55,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:52:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=118, Unknown=1, NotChecked=22, Total=182 [2021-10-28 09:52:55,263 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:56,984 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-10-28 09:52:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:52:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:52:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:56,986 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:52:56,986 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 09:52:56,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=132, Invalid=333, Unknown=1, NotChecked=40, Total=506 [2021-10-28 09:52:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 09:52:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2021-10-28 09:52:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.4150943396226414) internal successors, (150), 141 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2021-10-28 09:52:56,992 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 23 [2021-10-28 09:52:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:56,992 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2021-10-28 09:52:56,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2021-10-28 09:52:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:52:56,994 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:56,994 INFO L513 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] [2021-10-28 09:52:57,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:57,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,199 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:52:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash 124262506, now seen corresponding path program 1 times [2021-10-28 09:52:57,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:57,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383645548] [2021-10-28 09:52:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:57,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:57,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:52:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:52:57,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:57,513 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 [2021-10-28 09:52:57,561 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:52:57,562 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 18 treesize of output 18 [2021-10-28 09:52:57,570 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 [2021-10-28 09:52:57,600 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 [2021-10-28 09:52:57,607 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 [2021-10-28 09:52:57,730 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:52:57,730 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 [2021-10-28 09:52:57,750 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 09:52:57,750 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 [2021-10-28 09:52:57,883 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:52:57,883 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 [2021-10-28 09:52:57,890 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:52:57,891 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 [2021-10-28 09:52:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:57,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:11,429 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-28 09:53:13,458 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse1 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse2 (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.offset))) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-10-28 09:53:13,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:53:13,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:53:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:13,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:13,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383645548] [2021-10-28 09:53:13,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383645548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:13,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:13,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 09:53:13,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058588097] [2021-10-28 09:53:13,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:53:13,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:53:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=172, Unknown=3, NotChecked=26, Total=240 [2021-10-28 09:53:13,700 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:53:37,568 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2021-10-28 09:53:40,039 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (exists ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2)) (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_main_~end~0.offset)))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 09:53:48,931 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-10-28 09:53:59,226 WARN L207 SmtUtils]: Spent 8.14 s on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2021-10-28 09:54:14,002 WARN L207 SmtUtils]: Spent 8.46 s on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2021-10-28 09:54:16,017 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= |c_main_#t~mem8.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (exists ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2)) (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_main_~end~0.offset)))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (_ bv12 32) (select |c_#length| |c_main_#t~mem8.base|)) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 09:54:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:23,762 INFO L93 Difference]: Finished difference Result 279 states and 295 transitions. [2021-10-28 09:54:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-28 09:54:23,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 09:54:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:23,765 INFO L225 Difference]: With dead ends: 279 [2021-10-28 09:54:23,766 INFO L226 Difference]: Without dead ends: 279 [2021-10-28 09:54:23,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 81.0s TimeCoverageRelationStatistics Valid=495, Invalid=1758, Unknown=15, NotChecked=282, Total=2550 [2021-10-28 09:54:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-10-28 09:54:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 140. [2021-10-28 09:54:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 136 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-10-28 09:54:23,774 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 23 [2021-10-28 09:54:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:23,774 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-10-28 09:54:23,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:23,775 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-10-28 09:54:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:54:23,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:23,776 INFO L513 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] [2021-10-28 09:54:23,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:23,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:23,990 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr53ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1488771985, now seen corresponding path program 1 times [2021-10-28 09:54:23,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:23,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368245979] [2021-10-28 09:54:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:23,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:23,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:23,995 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:23,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:54:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:24,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:54:24,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:24,272 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 [2021-10-28 09:54:24,414 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 [2021-10-28 09:54:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:24,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:24,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:24,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368245979] [2021-10-28 09:54:24,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368245979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:24,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:24,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-10-28 09:54:24,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788117639] [2021-10-28 09:54:24,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:54:24,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:54:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:54:24,601 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:25,594 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2021-10-28 09:54:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:54:25,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 09:54:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:25,596 INFO L225 Difference]: With dead ends: 191 [2021-10-28 09:54:25,596 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:54:25,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:54:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:54:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 144. [2021-10-28 09:54:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 140 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-28 09:54:25,602 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 28 [2021-10-28 09:54:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:25,603 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-28 09:54:25,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-28 09:54:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:54:25,604 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:25,604 INFO L513 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] [2021-10-28 09:54:25,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:25,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:25,817 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1530790238, now seen corresponding path program 1 times [2021-10-28 09:54:25,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:25,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552110545] [2021-10-28 09:54:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:25,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:25,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:25,820 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:25,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:54:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:26,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:54:26,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:26,196 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 [2021-10-28 09:54:26,214 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 [2021-10-28 09:54:26,289 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 09:54:26,290 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 [2021-10-28 09:54:26,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:54:26,316 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 [2021-10-28 09:54:26,423 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 09:54:26,424 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 [2021-10-28 09:54:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:54:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:54:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:54:26,447 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 [2021-10-28 09:54:26,962 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:54:26,962 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 [2021-10-28 09:54:26,970 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 09:54:26,970 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 [2021-10-28 09:54:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:27,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:27,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:27,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552110545] [2021-10-28 09:54:27,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552110545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:54:27,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:54:27,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-10-28 09:54:27,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602405721] [2021-10-28 09:54:27,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:54:27,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:54:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:54:27,501 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:29,089 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2021-10-28 09:54:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:54:29,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 09:54:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:29,091 INFO L225 Difference]: With dead ends: 167 [2021-10-28 09:54:29,091 INFO L226 Difference]: Without dead ends: 167 [2021-10-28 09:54:29,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:54:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-28 09:54:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 147. [2021-10-28 09:54:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 113 states have (on average 1.345132743362832) internal successors, (152), 143 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2021-10-28 09:54:29,097 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 28 [2021-10-28 09:54:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:29,098 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2021-10-28 09:54:29,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2021-10-28 09:54:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:54:29,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:29,099 INFO L513 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] [2021-10-28 09:54:29,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:29,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:29,311 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr40ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash 66805131, now seen corresponding path program 1 times [2021-10-28 09:54:29,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:29,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014010947] [2021-10-28 09:54:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:29,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:29,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:29,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:29,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:54:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:29,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:54:29,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:29,666 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 [2021-10-28 09:54:29,681 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 [2021-10-28 09:54:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:29,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:29,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:29,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014010947] [2021-10-28 09:54:29,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014010947] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:29,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:29,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:54:29,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904908448] [2021-10-28 09:54:29,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:54:29,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:54:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:54:29,751 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:30,023 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2021-10-28 09:54:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:54:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 09:54:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:30,026 INFO L225 Difference]: With dead ends: 149 [2021-10-28 09:54:30,026 INFO L226 Difference]: Without dead ends: 149 [2021-10-28 09:54:30,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:54:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-28 09:54:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2021-10-28 09:54:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 141 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2021-10-28 09:54:30,032 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 28 [2021-10-28 09:54:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:30,033 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2021-10-28 09:54:30,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2021-10-28 09:54:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:54:30,035 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:30,035 INFO L513 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] [2021-10-28 09:54:30,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:30,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:30,261 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash 36943448, now seen corresponding path program 1 times [2021-10-28 09:54:30,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:30,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142838639] [2021-10-28 09:54:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:30,263 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:30,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:30,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:30,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 09:54:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:30,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:54:30,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:30,751 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 [2021-10-28 09:54:30,765 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 [2021-10-28 09:54:30,791 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 [2021-10-28 09:54:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:30,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:30,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:30,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142838639] [2021-10-28 09:54:30,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142838639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:30,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:30,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:54:30,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352477375] [2021-10-28 09:54:30,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:54:30,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:30,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:54:30,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:54:30,881 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:31,413 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2021-10-28 09:54:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:54:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 09:54:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:31,415 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:54:31,416 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 09:54:31,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:54:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 09:54:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-28 09:54:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 140 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-28 09:54:31,421 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 30 [2021-10-28 09:54:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:31,422 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-28 09:54:31,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-28 09:54:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:54:31,423 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:31,423 INFO L513 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] [2021-10-28 09:54:31,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:31,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:31,637 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash 36943449, now seen corresponding path program 1 times [2021-10-28 09:54:31,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:31,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624180401] [2021-10-28 09:54:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:31,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:31,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 09:54:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:31,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:54:31,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:32,044 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 [2021-10-28 09:54:32,070 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 [2021-10-28 09:54:32,079 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 [2021-10-28 09:54:32,130 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 [2021-10-28 09:54:32,135 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 [2021-10-28 09:54:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:32,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:32,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:32,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624180401] [2021-10-28 09:54:32,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624180401] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:32,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:32,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:54:32,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647237176] [2021-10-28 09:54:32,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:54:32,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:54:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:54:32,477 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:33,829 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2021-10-28 09:54:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:54:33,830 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 09:54:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:33,831 INFO L225 Difference]: With dead ends: 143 [2021-10-28 09:54:33,831 INFO L226 Difference]: Without dead ends: 143 [2021-10-28 09:54:33,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:54:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-28 09:54:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-10-28 09:54:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 139 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2021-10-28 09:54:33,836 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 30 [2021-10-28 09:54:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:33,837 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2021-10-28 09:54:33,837 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2021-10-28 09:54:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:54:33,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:33,838 INFO L513 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] [2021-10-28 09:54:33,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:34,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:34,050 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1625836410, now seen corresponding path program 1 times [2021-10-28 09:54:34,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:34,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318676679] [2021-10-28 09:54:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:34,051 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:34,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:34,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:34,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 09:54:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:34,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:54:34,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:34,556 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 [2021-10-28 09:54:34,565 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 [2021-10-28 09:54:34,641 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-28 09:54:34,642 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 [2021-10-28 09:54:34,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:54:34,652 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 [2021-10-28 09:54:34,730 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 [2021-10-28 09:54:34,734 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 [2021-10-28 09:54:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:34,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:34,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:34,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318676679] [2021-10-28 09:54:34,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318676679] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:34,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:34,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-28 09:54:34,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138679952] [2021-10-28 09:54:34,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:54:34,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:54:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:54:34,960 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:35,578 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 09:54:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:54:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-10-28 09:54:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:35,579 INFO L225 Difference]: With dead ends: 142 [2021-10-28 09:54:35,580 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 09:54:35,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:54:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 09:54:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-10-28 09:54:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 137 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-10-28 09:54:35,584 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 31 [2021-10-28 09:54:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:35,585 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-10-28 09:54:35,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-10-28 09:54:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:54:35,585 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:35,586 INFO L513 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] [2021-10-28 09:54:35,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:35,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:35,796 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash -939174818, now seen corresponding path program 1 times [2021-10-28 09:54:35,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:35,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287512005] [2021-10-28 09:54:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:35,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:35,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:35,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 09:54:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:36,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:54:36,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:36,255 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 [2021-10-28 09:54:36,297 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:54:36,297 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 15 treesize of output 20 [2021-10-28 09:54:36,462 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 09:54:36,463 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 40 treesize of output 42 [2021-10-28 09:54:36,506 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 [2021-10-28 09:54:36,634 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:54:36,635 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 [2021-10-28 09:54:36,717 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:54:36,717 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 [2021-10-28 09:54:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:36,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:38,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (not (= c_main_~null~0.base (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))) is different from false [2021-10-28 09:54:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:43,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:43,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287512005] [2021-10-28 09:54:43,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287512005] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:43,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 14 [2021-10-28 09:54:43,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098033658] [2021-10-28 09:54:43,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:54:43,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:54:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2021-10-28 09:54:43,058 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:47,224 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-10-28 09:54:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:54:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 09:54:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:47,226 INFO L225 Difference]: With dead ends: 163 [2021-10-28 09:54:47,226 INFO L226 Difference]: Without dead ends: 163 [2021-10-28 09:54:47,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=234, Invalid=639, Unknown=1, NotChecked=56, Total=930 [2021-10-28 09:54:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-28 09:54:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 147. [2021-10-28 09:54:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 143 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2021-10-28 09:54:47,240 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 33 [2021-10-28 09:54:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:47,241 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2021-10-28 09:54:47,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2021-10-28 09:54:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:54:47,242 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:47,242 INFO L513 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] [2021-10-28 09:54:47,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-28 09:54:47,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:47,447 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr64ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash 703031177, now seen corresponding path program 1 times [2021-10-28 09:54:47,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:47,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614588554] [2021-10-28 09:54:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:47,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:47,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:47,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:47,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-28 09:54:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:47,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:54:47,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:47,828 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 [2021-10-28 09:54:47,929 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 [2021-10-28 09:54:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:54:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:54:48,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:48,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614588554] [2021-10-28 09:54:48,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614588554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:48,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:48,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:54:48,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797151982] [2021-10-28 09:54:48,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:54:48,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:48,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:54:48,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:54:48,084 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:48,441 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2021-10-28 09:54:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:54:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 09:54:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:48,443 INFO L225 Difference]: With dead ends: 157 [2021-10-28 09:54:48,443 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 09:54:48,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:54:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 09:54:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2021-10-28 09:54:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 146 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2021-10-28 09:54:48,448 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 34 [2021-10-28 09:54:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:48,448 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2021-10-28 09:54:48,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2021-10-28 09:54:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:54:48,449 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:48,449 INFO L513 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] [2021-10-28 09:54:48,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:48,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:48,665 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr74ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:48,666 INFO L85 PathProgramCache]: Analyzing trace with hash 724025887, now seen corresponding path program 1 times [2021-10-28 09:54:48,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:48,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130977819] [2021-10-28 09:54:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:48,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:48,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:48,667 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:48,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-28 09:54:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:49,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:54:49,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:54:49,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:54:49,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:49,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130977819] [2021-10-28 09:54:49,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130977819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:49,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:49,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:54:49,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718560835] [2021-10-28 09:54:49,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:54:49,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:54:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:49,292 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:49,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:49,384 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2021-10-28 09:54:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:54:49,384 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 09:54:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:49,385 INFO L225 Difference]: With dead ends: 152 [2021-10-28 09:54:49,385 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:54:49,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:54:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:54:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 09:54:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 122 states have (on average 1.2868852459016393) internal successors, (157), 148 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2021-10-28 09:54:49,390 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 34 [2021-10-28 09:54:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:49,390 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2021-10-28 09:54:49,390 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2021-10-28 09:54:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:54:49,391 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:49,391 INFO L513 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] [2021-10-28 09:54:49,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:49,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:49,599 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1167972262, now seen corresponding path program 1 times [2021-10-28 09:54:49,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:49,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398782719] [2021-10-28 09:54:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:49,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:49,602 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-28 09:54:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:54:50,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:50,196 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 09:54:50,197 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 24 treesize of output 31 [2021-10-28 09:54:50,251 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 [2021-10-28 09:54:50,421 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:54:50,422 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 45 treesize of output 35 [2021-10-28 09:54:50,544 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:54:50,544 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 46 [2021-10-28 09:54:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:50,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:54:52,745 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem11.base|) (bvadd |main_#t~mem11.offset| (_ bv4 32)) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))))) (_ bv1 1)))) is different from false [2021-10-28 09:54:54,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |main_#t~mem11.offset| (_ bv4 32)) c_main_~end~0.base))) c_main_~end~0.base) c_main_~end~0.offset))))))))))) is different from false [2021-10-28 09:54:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:54,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:54:54,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398782719] [2021-10-28 09:54:54,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398782719] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:54:54,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:54:54,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-10-28 09:54:54,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723032258] [2021-10-28 09:54:54,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:54:54,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:54:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:54:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-28 09:54:54,855 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:54:56,506 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-10-28 09:54:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:54:56,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 09:54:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:54:56,510 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:54:56,510 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 09:54:56,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=66, Invalid=150, Unknown=2, NotChecked=54, Total=272 [2021-10-28 09:54:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 09:54:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 151. [2021-10-28 09:54:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 122 states have (on average 1.278688524590164) internal successors, (156), 147 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2021-10-28 09:54:56,515 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 34 [2021-10-28 09:54:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:54:56,516 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 159 transitions. [2021-10-28 09:54:56,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:54:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 159 transitions. [2021-10-28 09:54:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:54:56,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:54:56,517 INFO L513 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] [2021-10-28 09:54:56,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:54:56,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:54:56,731 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:54:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:54:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1167972261, now seen corresponding path program 1 times [2021-10-28 09:54:56,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:54:56,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486713851] [2021-10-28 09:54:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:54:56,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:54:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:54:56,733 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:54:56,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-28 09:54:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:54:57,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:54:57,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:54:57,452 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 [2021-10-28 09:54:57,498 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 [2021-10-28 09:54:57,532 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 09:54:57,533 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 29 treesize of output 36 [2021-10-28 09:54:57,594 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 29 treesize of output 25 [2021-10-28 09:54:57,750 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:54:57,751 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 55 treesize of output 41 [2021-10-28 09:54:57,874 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:54:57,874 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 79 treesize of output 56 [2021-10-28 09:54:58,217 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:54:58,217 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 [2021-10-28 09:54:58,249 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 09:54:58,249 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 56 treesize of output 58 [2021-10-28 09:54:58,307 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 [2021-10-28 09:54:58,316 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 [2021-10-28 09:54:58,475 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 09:54:58,476 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 [2021-10-28 09:54:58,495 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 09:54:58,495 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 [2021-10-28 09:54:58,617 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:54:58,618 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 70 treesize of output 47 [2021-10-28 09:54:58,623 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:54:58,623 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 41 treesize of output 24 [2021-10-28 09:54:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:54:58,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:55:01,125 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base|) (bvadd |main_#t~mem11.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (let ((.cse1 (bvadd |main_#t~mem11.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem11.base|) .cse1 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem11.base|) .cse1 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))) is different from false [2021-10-28 09:55:09,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))))))) (_ bv1 1)))) is different from false [2021-10-28 09:55:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:17,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:55:17,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486713851] [2021-10-28 09:55:17,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486713851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:17,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:17,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 12] imperfect sequences [] total 25 [2021-10-28 09:55:17,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830595751] [2021-10-28 09:55:17,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 09:55:17,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:55:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 09:55:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=485, Unknown=2, NotChecked=90, Total=650 [2021-10-28 09:55:17,722 INFO L87 Difference]: Start difference. First operand 151 states and 159 transitions. Second operand has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:37,742 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2021-10-28 09:55:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 09:55:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 09:55:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:37,743 INFO L225 Difference]: With dead ends: 179 [2021-10-28 09:55:37,743 INFO L226 Difference]: Without dead ends: 179 [2021-10-28 09:55:37,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=662, Invalid=2884, Unknown=2, NotChecked=234, Total=3782 [2021-10-28 09:55:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-28 09:55:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2021-10-28 09:55:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 144 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 156 transitions. [2021-10-28 09:55:37,751 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 156 transitions. Word has length 34 [2021-10-28 09:55:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:37,751 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 156 transitions. [2021-10-28 09:55:37,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 156 transitions. [2021-10-28 09:55:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:55:37,752 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:37,753 INFO L513 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, 1, 1, 1] [2021-10-28 09:55:37,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:37,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:55:37,969 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:55:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash 129788422, now seen corresponding path program 1 times [2021-10-28 09:55:37,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:55:37,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020869187] [2021-10-28 09:55:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:37,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:55:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:55:37,972 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:55:38,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-28 09:55:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:38,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:55:38,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:39,086 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 [2021-10-28 09:55:39,090 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 [2021-10-28 09:55:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:39,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:55:39,709 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-28 09:55:39,709 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 [2021-10-28 09:55:39,720 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-28 09:55:39,720 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 [2021-10-28 09:55:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:39,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:55:39,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020869187] [2021-10-28 09:55:39,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020869187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:55:39,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:55:39,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-28 09:55:39,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55474985] [2021-10-28 09:55:39,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:55:39,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:55:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:55:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:55:39,905 INFO L87 Difference]: Start difference. First operand 148 states and 156 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:42,379 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2021-10-28 09:55:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:55:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-10-28 09:55:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:42,381 INFO L225 Difference]: With dead ends: 200 [2021-10-28 09:55:42,382 INFO L226 Difference]: Without dead ends: 200 [2021-10-28 09:55:42,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:55:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-28 09:55:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 159. [2021-10-28 09:55:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 155 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2021-10-28 09:55:42,388 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 37 [2021-10-28 09:55:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:42,388 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2021-10-28 09:55:42,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:55:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2021-10-28 09:55:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:55:42,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:42,390 INFO L513 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, 1, 1, 1] [2021-10-28 09:55:42,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:42,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:55:42,606 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr76ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 09:55:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -271526566, now seen corresponding path program 1 times [2021-10-28 09:55:42,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:55:42,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026540155] [2021-10-28 09:55:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:42,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:55:42,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:55:42,608 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:55:42,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-28 09:55:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:43,205 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:43,373 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:55:43,374 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:55:43,375 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr76ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:55:43,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:55:43,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:55:43,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 09:55:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 09:55:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 09:55:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 09:55:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 09:55:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 09:55:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 09:55:43,380 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 09:55:43,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 09:55:43,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 09:55:43,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 09:55:43,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 09:55:43,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 09:55:43,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 09:55:43,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 09:55:43,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 09:55:43,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 09:55:43,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 09:55:43,383 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 09:55:43,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 09:55:43,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 09:55:43,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 09:55:43,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,384 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 09:55:43,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 09:55:43,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,385 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 09:55:43,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 09:55:43,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 09:55:43,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 09:55:43,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-28 09:55:43,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-10-28 09:55:43,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 09:55:43,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 09:55:43,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:55:43,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-10-28 09:55:43,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-10-28 09:55:43,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 09:55:43,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 09:55:43,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION [2021-10-28 09:55:43,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION [2021-10-28 09:55:43,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION [2021-10-28 09:55:43,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67REQUIRES_VIOLATION [2021-10-28 09:55:43,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71REQUIRES_VIOLATION [2021-10-28 09:55:43,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72REQUIRES_VIOLATION [2021-10-28 09:55:43,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:55:43,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:43,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:55:43,609 INFO L731 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] [2021-10-28 09:55:43,613 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:55:43,645 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:55:43,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:55:43 BoogieIcfgContainer [2021-10-28 09:55:43,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:55:43,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:55:43,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:55:43,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:55:43,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:37" (3/4) ... [2021-10-28 09:55:43,691 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:55:43,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:55:43,694 INFO L168 Benchmark]: Toolchain (without parser) took 188642.31 ms. Allocated memory was 58.7 MB in the beginning and 100.7 MB in the end (delta: 41.9 MB). Free memory was 35.4 MB in the beginning and 58.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:43,695 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:43,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.05 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 33.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:43,695 INFO L168 Benchmark]: Boogie Preprocessor took 127.50 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 29.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:43,696 INFO L168 Benchmark]: RCFGBuilder took 1313.03 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 52.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:43,696 INFO L168 Benchmark]: TraceAbstraction took 186523.65 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 51.6 MB in the beginning and 58.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:43,697 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 100.7 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:43,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 666.05 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 33.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.50 ms. Allocated memory is still 58.7 MB. Free memory was 33.1 MB in the beginning and 29.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1313.03 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 52.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 186523.65 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 51.6 MB in the beginning and 58.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 100.7 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 5 procedures, 178 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 186.3s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 112.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2231 SDtfs, 3818 SDslu, 6088 SDs, 0 SdLazy, 7690 SolverSat, 406 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 25.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1261 GetRequests, 946 SyntacticMatches, 21 SemanticMatches, 294 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 134.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=0, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 556 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 60.4s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1096 ConstructedInterpolants, 57 QuantifiedInterpolants, 7705 SizeOfPredicates, 127 NumberOfNonLiveVariables, 3280 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 48 InterpolantComputations, 44 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 [2021-10-28 09:55:43,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c87bad7-5bd6-490f-b80b-1f1c486b6adc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...