./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL --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 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:32:56,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:32:56,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:32:56,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:32:56,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:32:56,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:32:56,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:32:56,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:32:56,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:32:56,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:32:56,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:32:56,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:32:56,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:32:56,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:32:56,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:32:56,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:32:56,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:32:56,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:32:56,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:32:56,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:32:56,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:32:56,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:32:56,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:32:56,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:32:56,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:32:56,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:32:56,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:32:56,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:32:56,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:32:56,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:32:56,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:32:56,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:32:56,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:32:56,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:32:56,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:32:56,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:32:56,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:32:56,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:32:56,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:32:56,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:32:56,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:32:56,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:32:56,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:32:56,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:32:56,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:32:56,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:32:56,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:32:56,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:32:56,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:32:56,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:32:56,589 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:32:56,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:32:56,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:32:56,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:32:56,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:32:56,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:32:56,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:32:56,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:32:56,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:32:56,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:32:56,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:32:56,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:32:56,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:32:56,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:32:56,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:32:56,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:32:56,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:32:56,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:32:56,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:32:56,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:32:56,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:32:56,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:32:56,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:32:56,598 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_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 [2021-11-19 05:32:56,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:32:57,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:32:57,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:32:57,035 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:32:57,036 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:32:57,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/list-properties/alternating_list-1.i [2021-11-19 05:32:57,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/data/eb13d9f74/3b8391170084404599694a0c9265d039/FLAG2688c2254 [2021-11-19 05:32:57,731 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:32:57,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/sv-benchmarks/c/list-properties/alternating_list-1.i [2021-11-19 05:32:57,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/data/eb13d9f74/3b8391170084404599694a0c9265d039/FLAG2688c2254 [2021-11-19 05:32:58,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/data/eb13d9f74/3b8391170084404599694a0c9265d039 [2021-11-19 05:32:58,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:32:58,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:32:58,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:58,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:32:58,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:32:58,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de891ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58, skipping insertion in model container [2021-11-19 05:32:58,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:32:58,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:32:58,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2021-11-19 05:32:58,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:58,541 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:32:58,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/sv-benchmarks/c/list-properties/alternating_list-1.i[23574,23587] [2021-11-19 05:32:58,607 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:32:58,636 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:32:58,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58 WrapperNode [2021-11-19 05:32:58,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:32:58,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:32:58,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:32:58,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:32:58,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:32:58,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:32:58,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:32:58,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:32:58,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (1/1) ... [2021-11-19 05:32:58,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:32:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:32:58,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:32:58,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:32:58,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:32:58,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:32:58,826 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:32:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:32:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:32:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:32:58,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:32:58,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:32:58,829 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-19 05:32:58,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:32:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:32:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:32:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:32:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:32:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:32:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:32:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:32:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:32:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:32:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:32:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:32:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:32:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:32:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:32:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:32:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:32:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:32:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:32:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:32:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:32:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:32:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:32:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:32:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:32:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:32:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:32:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:32:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:32:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:32:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:32:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:32:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:32:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:32:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:32:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:32:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:32:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:32:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:32:58,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:32:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:32:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:32:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:32:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:32:58,844 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:32:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:32:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:32:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:32:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:32:58,845 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:32:58,846 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:32:58,847 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:32:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:32:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:32:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:32:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:32:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:32:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:32:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:32:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:32:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:32:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:32:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:32:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:32:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:32:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:32:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:32:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:32:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:32:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:32:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:32:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:32:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:32:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:32:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:32:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:32:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:32:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:32:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:32:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:32:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:32:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:32:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:32:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:32:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-19 05:32:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:32:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:32:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:32:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:32:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:32:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:32:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:32:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:32:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:32:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:32:59,161 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:32:59,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:32:59,247 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-19 05:32:59,598 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:32:59,613 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:32:59,613 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 05:32:59,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:59 BoogieIcfgContainer [2021-11-19 05:32:59,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:32:59,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:32:59,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:32:59,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:32:59,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:32:58" (1/3) ... [2021-11-19 05:32:59,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dacf5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:59, skipping insertion in model container [2021-11-19 05:32:59,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:32:58" (2/3) ... [2021-11-19 05:32:59,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dacf5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:32:59, skipping insertion in model container [2021-11-19 05:32:59,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:32:59" (3/3) ... [2021-11-19 05:32:59,627 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2021-11-19 05:32:59,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:32:59,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-19 05:32:59,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:32:59,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:32:59,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-19 05:32:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:32:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:32:59,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:59,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:59,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:32:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:59,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1080134069, now seen corresponding path program 1 times [2021-11-19 05:32:59,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:32:59,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524346515] [2021-11-19 05:32:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:59,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:32:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:32:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:32:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:32:59,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:32:59,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524346515] [2021-11-19 05:32:59,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524346515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:32:59,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:32:59,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:32:59,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827225210] [2021-11-19 05:32:59,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:32:59,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:32:59,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:32:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:32:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:00,000 INFO L87 Difference]: Start difference. First operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-19 05:33:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:00,045 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-19 05:33:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-11-19 05:33:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:00,057 INFO L225 Difference]: With dead ends: 81 [2021-11-19 05:33:00,057 INFO L226 Difference]: Without dead ends: 74 [2021-11-19 05:33:00,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:00,064 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:00,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:33:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-19 05:33:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-19 05:33:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.853658536585366) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-11-19 05:33:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-11-19 05:33:00,111 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 10 [2021-11-19 05:33:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-11-19 05:33:00,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-19 05:33:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-11-19 05:33:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:33:00,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:00,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:00,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:33:00,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -875617869, now seen corresponding path program 1 times [2021-11-19 05:33:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:00,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241249575] [2021-11-19 05:33:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:00,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:00,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:00,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241249575] [2021-11-19 05:33:00,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241249575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:00,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:00,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:33:00,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762629567] [2021-11-19 05:33:00,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:00,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:00,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:00,203 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-19 05:33:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:00,499 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-11-19 05:33:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:33:00,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-11-19 05:33:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:00,504 INFO L225 Difference]: With dead ends: 95 [2021-11-19 05:33:00,504 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 05:33:00,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:33:00,512 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 214 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:00,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 45 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 05:33:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2021-11-19 05:33:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 71 states have internal predecessors, (84), 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) [2021-11-19 05:33:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-11-19 05:33:00,537 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 11 [2021-11-19 05:33:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:00,538 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-11-19 05:33:00,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-19 05:33:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-11-19 05:33:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 05:33:00,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:00,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:00,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:33:00,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -875617868, now seen corresponding path program 1 times [2021-11-19 05:33:00,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:00,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92797354] [2021-11-19 05:33:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:00,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:00,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:00,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92797354] [2021-11-19 05:33:00,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92797354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:00,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:00,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:33:00,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374752161] [2021-11-19 05:33:00,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:00,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:00,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:00,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:00,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:00,734 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-19 05:33:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:00,953 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-11-19 05:33:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:33:00,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-11-19 05:33:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:00,958 INFO L225 Difference]: With dead ends: 103 [2021-11-19 05:33:00,958 INFO L226 Difference]: Without dead ends: 103 [2021-11-19 05:33:00,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:00,966 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 239 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:00,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 50 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-19 05:33:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-11-19 05:33:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 87 states have internal predecessors, (100), 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) [2021-11-19 05:33:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2021-11-19 05:33:00,982 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 11 [2021-11-19 05:33:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:00,983 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2021-11-19 05:33:00,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-19 05:33:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2021-11-19 05:33:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:33:00,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:00,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:00,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:33:00,985 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash 888231595, now seen corresponding path program 1 times [2021-11-19 05:33:00,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:00,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904898928] [2021-11-19 05:33:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:00,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:01,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:01,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904898928] [2021-11-19 05:33:01,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904898928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:01,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:01,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:33:01,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598117053] [2021-11-19 05:33:01,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:01,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:01,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:01,087 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-19 05:33:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:01,207 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-11-19 05:33:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:01,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2021-11-19 05:33:01,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:01,209 INFO L225 Difference]: With dead ends: 140 [2021-11-19 05:33:01,209 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 05:33:01,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:01,217 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:01,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 93 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:33:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 05:33:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-11-19 05:33:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.527027027027027) internal successors, (113), 96 states have internal predecessors, (113), 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) [2021-11-19 05:33:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-11-19 05:33:01,232 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 18 [2021-11-19 05:33:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:01,233 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-11-19 05:33:01,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-19 05:33:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-11-19 05:33:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:33:01,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:01,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:01,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:33:01,235 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash 887923765, now seen corresponding path program 1 times [2021-11-19 05:33:01,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:01,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194841063] [2021-11-19 05:33:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:01,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:01,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:01,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194841063] [2021-11-19 05:33:01,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194841063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:01,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:01,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:33:01,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812908236] [2021-11-19 05:33:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:01,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:33:01,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:33:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:01,368 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-19 05:33:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:01,751 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-19 05:33:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:33:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-11-19 05:33:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:01,753 INFO L225 Difference]: With dead ends: 145 [2021-11-19 05:33:01,753 INFO L226 Difference]: Without dead ends: 145 [2021-11-19 05:33:01,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:33:01,755 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 208 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:01,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 75 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:33:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-19 05:33:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 103. [2021-11-19 05:33:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 states have internal predecessors, (116), 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) [2021-11-19 05:33:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-11-19 05:33:01,764 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 18 [2021-11-19 05:33:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:01,764 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-11-19 05:33:01,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-19 05:33:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-11-19 05:33:01,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:33:01,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:01,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:01,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:33:01,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:01,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1724463005, now seen corresponding path program 1 times [2021-11-19 05:33:01,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:01,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32121893] [2021-11-19 05:33:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:01,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:01,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:01,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32121893] [2021-11-19 05:33:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32121893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:01,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:01,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:33:01,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559694063] [2021-11-19 05:33:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:01,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:01,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:01,854 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-19 05:33:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:02,013 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-11-19 05:33:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:33:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2021-11-19 05:33:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:02,015 INFO L225 Difference]: With dead ends: 110 [2021-11-19 05:33:02,016 INFO L226 Difference]: Without dead ends: 110 [2021-11-19 05:33:02,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:02,017 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 203 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:02,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 62 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:33:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-19 05:33:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-11-19 05:33:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5) internal successors, (117), 100 states have internal predecessors, (117), 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) [2021-11-19 05:33:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-11-19 05:33:02,026 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 19 [2021-11-19 05:33:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:02,026 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-11-19 05:33:02,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-19 05:33:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-11-19 05:33:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:33:02,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:02,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:02,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:33:02,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1918791492, now seen corresponding path program 1 times [2021-11-19 05:33:02,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:02,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316445987] [2021-11-19 05:33:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:02,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:02,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:02,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316445987] [2021-11-19 05:33:02,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316445987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:02,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:02,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:33:02,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937282825] [2021-11-19 05:33:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:02,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:02,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:02,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:02,097 INFO L87 Difference]: Start difference. First operand 104 states and 120 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) [2021-11-19 05:33:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:02,322 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2021-11-19 05:33:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:33:02,323 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 [2021-11-19 05:33:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:02,324 INFO L225 Difference]: With dead ends: 114 [2021-11-19 05:33:02,324 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 05:33:02,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:33:02,326 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 221 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:02,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 80 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 05:33:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-11-19 05:33:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.4875) internal successors, (119), 102 states have internal predecessors, (119), 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) [2021-11-19 05:33:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-19 05:33:02,337 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 20 [2021-11-19 05:33:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:02,338 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-19 05:33:02,338 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) [2021-11-19 05:33:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-19 05:33:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:02,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:02,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:02,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:33:02,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash -647005726, now seen corresponding path program 1 times [2021-11-19 05:33:02,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:02,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707254595] [2021-11-19 05:33:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:02,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:02,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:02,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707254595] [2021-11-19 05:33:02,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707254595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:02,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:02,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:33:02,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895718701] [2021-11-19 05:33:02,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:02,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:33:02,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:33:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:33:02,466 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-19 05:33:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:02,865 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2021-11-19 05:33:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:33:02,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 21 [2021-11-19 05:33:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:02,870 INFO L225 Difference]: With dead ends: 121 [2021-11-19 05:33:02,870 INFO L226 Difference]: Without dead ends: 121 [2021-11-19 05:33:02,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:33:02,871 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 146 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:02,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 78 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:33:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-19 05:33:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2021-11-19 05:33:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 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) [2021-11-19 05:33:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-11-19 05:33:02,895 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 21 [2021-11-19 05:33:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:02,895 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-11-19 05:33:02,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-19 05:33:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-11-19 05:33:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:02,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:02,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:02,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:33:02,897 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash -648422782, now seen corresponding path program 1 times [2021-11-19 05:33:02,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:02,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254528064] [2021-11-19 05:33:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:02,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:03,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:03,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254528064] [2021-11-19 05:33:03,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254528064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:03,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:03,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:33:03,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343156817] [2021-11-19 05:33:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:03,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:03,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:03,033 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-19 05:33:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:03,287 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-11-19 05:33:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:33:03,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21 [2021-11-19 05:33:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:03,289 INFO L225 Difference]: With dead ends: 116 [2021-11-19 05:33:03,290 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 05:33:03,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:33:03,291 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 97 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:03,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 60 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 05:33:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-19 05:33:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.481012658227848) internal successors, (117), 101 states have internal predecessors, (117), 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) [2021-11-19 05:33:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-19 05:33:03,309 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 21 [2021-11-19 05:33:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:03,310 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-19 05:33:03,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-19 05:33:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-19 05:33:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:03,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:03,312 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:03,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:33:03,312 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052608, now seen corresponding path program 1 times [2021-11-19 05:33:03,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:03,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983021942] [2021-11-19 05:33:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:03,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:03,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:03,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983021942] [2021-11-19 05:33:03,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983021942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:03,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:03,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:33:03,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846206733] [2021-11-19 05:33:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:03,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:33:03,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:33:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:03,414 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-19 05:33:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:03,680 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-11-19 05:33:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:33:03,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-11-19 05:33:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:03,684 INFO L225 Difference]: With dead ends: 107 [2021-11-19 05:33:03,684 INFO L226 Difference]: Without dead ends: 107 [2021-11-19 05:33:03,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:33:03,685 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 166 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:03,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 62 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-19 05:33:03,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-11-19 05:33:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 98 states have internal predecessors, (114), 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) [2021-11-19 05:33:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-11-19 05:33:03,690 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 21 [2021-11-19 05:33:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:03,690 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-11-19 05:33:03,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-19 05:33:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-11-19 05:33:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 05:33:03,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:03,691 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:03,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:33:03,692 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1983052609, now seen corresponding path program 1 times [2021-11-19 05:33:03,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:03,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724619600] [2021-11-19 05:33:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:03,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:03,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:03,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724619600] [2021-11-19 05:33:03,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724619600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:03,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:03,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:33:03,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780107682] [2021-11-19 05:33:03,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:03,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:33:03,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:03,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:33:03,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:03,826 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-19 05:33:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:04,113 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-11-19 05:33:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:33:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2021-11-19 05:33:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:04,132 INFO L225 Difference]: With dead ends: 98 [2021-11-19 05:33:04,132 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 05:33:04,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:33:04,139 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 123 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:04,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 68 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 05:33:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-11-19 05:33:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 86 states have internal predecessors, (100), 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) [2021-11-19 05:33:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-11-19 05:33:04,144 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 21 [2021-11-19 05:33:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:04,145 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-11-19 05:33:04,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-19 05:33:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-11-19 05:33:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 05:33:04,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:04,147 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:04,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:33:04,147 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:04,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1153932792, now seen corresponding path program 1 times [2021-11-19 05:33:04,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:04,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414163182] [2021-11-19 05:33:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:04,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:04,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:04,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414163182] [2021-11-19 05:33:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414163182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:04,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952682559] [2021-11-19 05:33:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:04,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:04,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:04,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:04,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:33:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:04,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 05:33:04,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:04,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:33:04,818 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:33:04,819 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 11 treesize of output 11 [2021-11-19 05:33:04,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:04,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:33:04,938 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 18 treesize of output 14 [2021-11-19 05:33:05,030 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 8 [2021-11-19 05:33:05,162 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 05:33:05,163 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 23 treesize of output 22 [2021-11-19 05:33:05,533 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:33:05,533 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 26 treesize of output 14 [2021-11-19 05:33:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:05,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:06,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (= (select (select (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset) 1)) is different from false [2021-11-19 05:33:06,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (= (select (select (store |c_#memory_int| |c_main_#t~mem6.base| (store (select |c_#memory_int| |c_main_#t~mem6.base|) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset) 1)) is different from false [2021-11-19 05:33:10,449 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~p~0.offset_36 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) (+ c_main_~p~0.offset 4) v_DerPreprocessor_1)))) (store .cse0 c_main_~t~0.base (store (select .cse0 c_main_~t~0.base) v_main_~p~0.offset_36 3))) c_main_~a~0.base) c_main_~a~0.offset) 1)) is different from false [2021-11-19 05:33:10,591 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 440 treesize of output 424 [2021-11-19 05:33:10,673 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:33:10,674 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 180 treesize of output 179 [2021-11-19 05:33:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 05:33:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952682559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:33:11,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:33:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 29 [2021-11-19 05:33:11,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911806011] [2021-11-19 05:33:11,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:33:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 05:33:11,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 05:33:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=543, Unknown=8, NotChecked=150, Total=812 [2021-11-19 05:33:11,644 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 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) [2021-11-19 05:33:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:17,177 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2021-11-19 05:33:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 05:33:17,178 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 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 28 [2021-11-19 05:33:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:17,180 INFO L225 Difference]: With dead ends: 186 [2021-11-19 05:33:17,180 INFO L226 Difference]: Without dead ends: 186 [2021-11-19 05:33:17,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=387, Invalid=1868, Unknown=13, NotChecked=282, Total=2550 [2021-11-19 05:33:17,183 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 272 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 751 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:17,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 182 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 885 Invalid, 0 Unknown, 751 Unchecked, 0.7s Time] [2021-11-19 05:33:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-19 05:33:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 107. [2021-11-19 05:33:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 103 states have internal predecessors, (119), 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) [2021-11-19 05:33:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-19 05:33:17,190 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 28 [2021-11-19 05:33:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:17,191 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-19 05:33:17,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 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) [2021-11-19 05:33:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-19 05:33:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:33:17,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:17,193 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:17,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:17,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:17,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -827825089, now seen corresponding path program 1 times [2021-11-19 05:33:17,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:17,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672344426] [2021-11-19 05:33:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:17,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:17,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:17,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672344426] [2021-11-19 05:33:17,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672344426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:17,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340476163] [2021-11-19 05:33:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:17,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:17,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:17,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:33:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 05:33:17,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:18,047 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:33:18,048 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 17 treesize of output 21 [2021-11-19 05:33:18,142 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 23 treesize of output 19 [2021-11-19 05:33:18,480 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:33:18,481 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 61 treesize of output 39 [2021-11-19 05:33:18,840 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:33:18,840 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 45 treesize of output 30 [2021-11-19 05:33:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:18,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:19,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int) (v_DerPreprocessor_2 Int)) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_2)) c_main_~a~0.base) (+ c_main_~a~0.offset 4))) 1)) is different from false [2021-11-19 05:33:25,920 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 96 treesize of output 90 [2021-11-19 05:33:26,765 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 05:33:26,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 88 [2021-11-19 05:33:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 05:33:27,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340476163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:33:27,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:33:27,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2021-11-19 05:33:27,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983939221] [2021-11-19 05:33:27,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:33:27,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-19 05:33:27,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-19 05:33:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=847, Unknown=1, NotChecked=60, Total=1056 [2021-11-19 05:33:27,119 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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) [2021-11-19 05:33:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:28,026 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2021-11-19 05:33:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:33:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 30 [2021-11-19 05:33:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:28,028 INFO L225 Difference]: With dead ends: 140 [2021-11-19 05:33:28,029 INFO L226 Difference]: Without dead ends: 140 [2021-11-19 05:33:28,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=316, Invalid=1579, Unknown=1, NotChecked=84, Total=1980 [2021-11-19 05:33:28,031 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 207 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:28,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 199 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 495 Invalid, 0 Unknown, 320 Unchecked, 0.5s Time] [2021-11-19 05:33:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-19 05:33:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2021-11-19 05:33:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 106 states have internal predecessors, (123), 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) [2021-11-19 05:33:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-11-19 05:33:28,037 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 30 [2021-11-19 05:33:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:28,038 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-11-19 05:33:28,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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) [2021-11-19 05:33:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-11-19 05:33:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:33:28,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:28,040 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:28,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:28,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 05:33:28,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash -827825088, now seen corresponding path program 1 times [2021-11-19 05:33:28,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:28,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421580730] [2021-11-19 05:33:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:28,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:28,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:28,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421580730] [2021-11-19 05:33:28,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421580730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:28,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094689246] [2021-11-19 05:33:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:28,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:28,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:28,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:33:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:28,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 05:33:28,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:29,179 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:33:29,180 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 11 treesize of output 11 [2021-11-19 05:33:29,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:33:29,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:33:29,267 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 23 treesize of output 19 [2021-11-19 05:33:29,474 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:33:29,475 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 79 treesize of output 53 [2021-11-19 05:33:29,492 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-19 05:33:29,493 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 52 treesize of output 28 [2021-11-19 05:33:29,694 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 39 treesize of output 31 [2021-11-19 05:33:29,698 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 28 treesize of output 16 [2021-11-19 05:33:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:29,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:31,979 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((main_~p~0.offset Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (let ((.cse0 (+ c_main_~a~0.offset 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| c_main_~p~0.base (store (select |c_#memory_$Pointer$.offset| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_4)) c_main_~a~0.base) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_3)) c_main_~a~0.base) .cse0))))) (forall ((main_~p~0.offset Int) (v_DerPreprocessor_4 Int)) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| c_main_~p~0.base (store (select |c_#memory_$Pointer$.offset| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_4)) c_main_~a~0.base) (+ c_main_~a~0.offset 4))))) is different from false [2021-11-19 05:33:51,150 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (v_subst_1 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~p~0.base) (+ c_main_~p~0.offset 4))) (.cse1 (+ c_main_~a~0.offset 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_1 v_DerPreprocessor_4)) c_main_~a~0.base) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_1 v_DerPreprocessor_3)) c_main_~a~0.base) .cse1))))) (forall ((v_DerPreprocessor_4 Int) (v_subst_2 Int)) (<= 0 (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~p~0.base) (+ c_main_~p~0.offset 4)))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) v_subst_2 v_DerPreprocessor_4))) c_main_~a~0.base) (+ c_main_~a~0.offset 4))))) is different from false [2021-11-19 05:33:51,163 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 240 treesize of output 234 [2021-11-19 05:33:51,169 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 1022 treesize of output 974 [2021-11-19 05:33:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:52,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:33:53,093 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:33:53,094 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 24 treesize of output 23 [2021-11-19 05:33:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 05:33:53,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094689246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:33:53,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:33:53,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2021-11-19 05:33:53,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413331156] [2021-11-19 05:33:53,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:33:53,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 05:33:53,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 05:33:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=748, Unknown=2, NotChecked=114, Total=992 [2021-11-19 05:33:53,235 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 32 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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) [2021-11-19 05:33:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:58,222 INFO L93 Difference]: Finished difference Result 257 states and 279 transitions. [2021-11-19 05:33:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 05:33:58,223 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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 30 [2021-11-19 05:33:58,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:58,225 INFO L225 Difference]: With dead ends: 257 [2021-11-19 05:33:58,225 INFO L226 Difference]: Without dead ends: 257 [2021-11-19 05:33:58,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=680, Invalid=2986, Unknown=2, NotChecked=238, Total=3906 [2021-11-19 05:33:58,228 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 700 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 505 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:58,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 126 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1392 Invalid, 0 Unknown, 505 Unchecked, 1.4s Time] [2021-11-19 05:33:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-19 05:33:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 113. [2021-11-19 05:33:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 109 states have internal predecessors, (128), 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) [2021-11-19 05:33:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2021-11-19 05:33:58,237 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 30 [2021-11-19 05:33:58,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:58,237 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2021-11-19 05:33:58,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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) [2021-11-19 05:33:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2021-11-19 05:33:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 05:33:58,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:58,239 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:58,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:58,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 05:33:58,453 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:33:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 24700879, now seen corresponding path program 1 times [2021-11-19 05:33:58,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:58,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892729339] [2021-11-19 05:33:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:58,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:33:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:58,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:58,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892729339] [2021-11-19 05:33:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892729339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:58,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217249337] [2021-11-19 05:33:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:58,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:58,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:58,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:33:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:58,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 05:33:58,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:59,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:33:59,107 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:33:59,107 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 11 treesize of output 11 [2021-11-19 05:33:59,183 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 18 treesize of output 14 [2021-11-19 05:33:59,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:33:59,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:33:59,250 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 8 [2021-11-19 05:33:59,365 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 05:33:59,366 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 23 treesize of output 22 [2021-11-19 05:33:59,505 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:33:59,506 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 26 treesize of output 14 [2021-11-19 05:33:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:59,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:00,258 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (not (= 3 (select (select (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset)))) is different from false [2021-11-19 05:34:00,909 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (not (= (select (select (store |c_#memory_int| |c_main_#t~mem6.base| (store (select |c_#memory_int| |c_main_#t~mem6.base|) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset) 3))) is different from false [2021-11-19 05:34:09,959 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 307 treesize of output 299 [2021-11-19 05:34:09,974 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:34:09,975 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 299 treesize of output 298 [2021-11-19 05:34:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-19 05:34:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217249337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:10,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:34:10,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2021-11-19 05:34:10,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170676612] [2021-11-19 05:34:10,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:34:10,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:34:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=841, Unknown=7, NotChecked=122, Total=1122 [2021-11-19 05:34:10,154 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 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) [2021-11-19 05:34:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:16,436 INFO L93 Difference]: Finished difference Result 280 states and 300 transitions. [2021-11-19 05:34:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 05:34:16,437 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 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 31 [2021-11-19 05:34:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:16,439 INFO L225 Difference]: With dead ends: 280 [2021-11-19 05:34:16,439 INFO L226 Difference]: Without dead ends: 280 [2021-11-19 05:34:16,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=733, Invalid=3686, Unknown=11, NotChecked=262, Total=4692 [2021-11-19 05:34:16,443 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 404 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:16,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 168 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1623 Invalid, 0 Unknown, 1211 Unchecked, 1.2s Time] [2021-11-19 05:34:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-19 05:34:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 113. [2021-11-19 05:34:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 1.309278350515464) internal successors, (127), 109 states have internal predecessors, (127), 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) [2021-11-19 05:34:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-11-19 05:34:16,451 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 31 [2021-11-19 05:34:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:16,452 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-11-19 05:34:16,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 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) [2021-11-19 05:34:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-11-19 05:34:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 05:34:16,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:16,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:16,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:16,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 05:34:16,673 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:34:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash 766311748, now seen corresponding path program 1 times [2021-11-19 05:34:16,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:16,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933680362] [2021-11-19 05:34:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:16,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:34:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:17,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:17,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933680362] [2021-11-19 05:34:17,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933680362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:17,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33066971] [2021-11-19 05:34:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:17,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:17,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:34:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:17,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 05:34:17,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:17,379 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:34:17,379 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 11 treesize of output 11 [2021-11-19 05:34:17,453 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 18 treesize of output 14 [2021-11-19 05:34:17,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:34:17,604 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-19 05:34:17,605 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 102 treesize of output 72 [2021-11-19 05:34:17,610 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 67 treesize of output 59 [2021-11-19 05:34:17,626 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-19 05:34:17,626 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 59 treesize of output 49 [2021-11-19 05:34:17,788 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 38 treesize of output 26 [2021-11-19 05:34:17,791 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 23 treesize of output 15 [2021-11-19 05:34:17,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 05:34:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:17,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:17,916 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 93 treesize of output 77 [2021-11-19 05:34:18,182 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 83 treesize of output 77 [2021-11-19 05:34:18,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:34:18,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:34:18,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:34:18,437 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:34:18,438 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 24 treesize of output 23 [2021-11-19 05:34:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:18,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33066971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:18,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:34:18,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 28 [2021-11-19 05:34:18,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048448777] [2021-11-19 05:34:18,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:18,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:34:18,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:34:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:34:18,572 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 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) [2021-11-19 05:34:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:20,491 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-11-19 05:34:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:34:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 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 35 [2021-11-19 05:34:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:20,493 INFO L225 Difference]: With dead ends: 179 [2021-11-19 05:34:20,494 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 05:34:20,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=421, Invalid=2129, Unknown=0, NotChecked=0, Total=2550 [2021-11-19 05:34:20,496 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 350 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:20,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 138 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1222 Invalid, 0 Unknown, 482 Unchecked, 1.0s Time] [2021-11-19 05:34:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 05:34:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 109. [2021-11-19 05:34:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 105 states have internal predecessors, (120), 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) [2021-11-19 05:34:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2021-11-19 05:34:20,503 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 35 [2021-11-19 05:34:20,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:20,504 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2021-11-19 05:34:20,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 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) [2021-11-19 05:34:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2021-11-19 05:34:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:34:20,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:20,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:20,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:20,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-19 05:34:20,713 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:34:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:20,714 INFO L85 PathProgramCache]: Analyzing trace with hash 781164713, now seen corresponding path program 1 times [2021-11-19 05:34:20,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:20,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828695252] [2021-11-19 05:34:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:20,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:34:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:34:20,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:20,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828695252] [2021-11-19 05:34:20,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828695252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:20,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:20,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:34:20,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068884065] [2021-11-19 05:34:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:20,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:34:20,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:34:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:20,813 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-11-19 05:34:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:21,036 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-11-19 05:34:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:34:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 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 38 [2021-11-19 05:34:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:21,037 INFO L225 Difference]: With dead ends: 116 [2021-11-19 05:34:21,037 INFO L226 Difference]: Without dead ends: 116 [2021-11-19 05:34:21,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:34:21,041 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 167 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:21,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 61 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:34:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-19 05:34:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2021-11-19 05:34:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 106 states have internal predecessors, (121), 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) [2021-11-19 05:34:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-11-19 05:34:21,050 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 38 [2021-11-19 05:34:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:21,051 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-11-19 05:34:21,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-11-19 05:34:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-11-19 05:34:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:34:21,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:21,056 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:21,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:34:21,059 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:34:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash 779747657, now seen corresponding path program 1 times [2021-11-19 05:34:21,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:21,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028761626] [2021-11-19 05:34:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:21,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:34:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:34:21,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:21,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028761626] [2021-11-19 05:34:21,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028761626] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:21,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507844769] [2021-11-19 05:34:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:21,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:21,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:21,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:21,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 05:34:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:21,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 05:34:21,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:21,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:34:21,530 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 15 treesize of output 15 [2021-11-19 05:34:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:34:21,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:21,764 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 05:34:21,764 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 17 treesize of output 16 [2021-11-19 05:34:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:34:21,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507844769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:21,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:34:21,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-19 05:34:21,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387914138] [2021-11-19 05:34:21,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:21,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:34:21,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:34:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:34:21,865 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 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) [2021-11-19 05:34:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:22,761 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2021-11-19 05:34:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:34:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 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 [2021-11-19 05:34:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:22,762 INFO L225 Difference]: With dead ends: 127 [2021-11-19 05:34:22,763 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 05:34:22,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2021-11-19 05:34:22,764 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 382 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:22,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 108 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:34:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 05:34:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2021-11-19 05:34:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 106 states have internal predecessors, (120), 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) [2021-11-19 05:34:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2021-11-19 05:34:22,770 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 38 [2021-11-19 05:34:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2021-11-19 05:34:22,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 19 states have internal predecessors, (73), 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) [2021-11-19 05:34:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2021-11-19 05:34:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:34:22,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:22,772 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:22,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:22,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-19 05:34:22,989 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:34:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1338297317, now seen corresponding path program 2 times [2021-11-19 05:34:22,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:22,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777390201] [2021-11-19 05:34:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:22,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:34:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777390201] [2021-11-19 05:34:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777390201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:23,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:23,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:34:23,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960386017] [2021-11-19 05:34:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:23,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:34:23,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:34:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:34:23,037 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-19 05:34:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:23,161 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2021-11-19 05:34:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:34:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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 38 [2021-11-19 05:34:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:23,163 INFO L225 Difference]: With dead ends: 144 [2021-11-19 05:34:23,163 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 05:34:23,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:34:23,164 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 123 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:23,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 77 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:34:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 05:34:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2021-11-19 05:34:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 106 states have internal predecessors, (118), 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) [2021-11-19 05:34:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-11-19 05:34:23,177 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 38 [2021-11-19 05:34:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:23,177 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-11-19 05:34:23,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-19 05:34:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-11-19 05:34:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:34:23,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:23,178 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:23,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:34:23,178 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:34:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2030888981, now seen corresponding path program 1 times [2021-11-19 05:34:23,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:23,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113029958] [2021-11-19 05:34:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:23,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:34:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:23,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:23,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113029958] [2021-11-19 05:34:23,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113029958] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:23,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137522545] [2021-11-19 05:34:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:23,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:23,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:23,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 05:34:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:23,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-19 05:34:23,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:23,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:34:23,935 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:34:23,935 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 11 treesize of output 11 [2021-11-19 05:34:24,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:34:24,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:34:24,036 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 18 treesize of output 14 [2021-11-19 05:34:24,101 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 8 [2021-11-19 05:34:24,256 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 19 treesize of output 18 [2021-11-19 05:34:24,344 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:34:24,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-19 05:34:24,452 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-19 05:34:24,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-19 05:34:24,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 05:34:24,506 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 19 [2021-11-19 05:34:24,724 INFO L354 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2021-11-19 05:34:24,725 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 34 treesize of output 44 [2021-11-19 05:34:24,999 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:34:24,999 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 26 treesize of output 14 [2021-11-19 05:34:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:25,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:48,308 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:34:48,308 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 94 treesize of output 93 [2021-11-19 05:34:50,328 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~p~0.offset_69 Int) (v_DerPreprocessor_9 Int) (v_DerPreprocessor_8 Int) (v_main_~p~0.offset_67 Int) (v_main_~t~0.base_18 Int)) (or (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) (+ c_main_~p~0.offset 4) v_DerPreprocessor_9)))) (store .cse1 c_main_~t~0.base (store (store (select .cse1 c_main_~t~0.base) v_main_~p~0.offset_69 2) (+ v_main_~p~0.offset_69 4) v_DerPreprocessor_8))))) (store .cse0 v_main_~t~0.base_18 (store (select .cse0 v_main_~t~0.base_18) v_main_~p~0.offset_67 3))) c_main_~a~0.base) c_main_~a~0.offset) 1) (= v_main_~t~0.base_18 c_main_~p~0.base))) is different from false [2021-11-19 05:35:00,626 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 184861 treesize of output 182813 [2021-11-19 05:35:11,561 WARN L227 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 381 DAG size of output: 329 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 05:35:11,597 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:35:11,598 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 157535 treesize of output 157534 [2021-11-19 05:35:13,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:35:13,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:35:13,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-19 05:35:13,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258678609] [2021-11-19 05:35:13,204 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:13,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:35:13,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:13,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:35:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1420, Unknown=22, NotChecked=78, Total=1722 [2021-11-19 05:35:13,206 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 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) [2021-11-19 05:35:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:16,200 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2021-11-19 05:35:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:35:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 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 38 [2021-11-19 05:35:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:16,201 INFO L225 Difference]: With dead ends: 148 [2021-11-19 05:35:16,202 INFO L226 Difference]: Without dead ends: 148 [2021-11-19 05:35:16,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=532, Invalid=3355, Unknown=23, NotChecked=122, Total=4032 [2021-11-19 05:35:16,205 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 235 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:16,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 104 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:35:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-19 05:35:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 110. [2021-11-19 05:35:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 106 states have internal predecessors, (117), 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) [2021-11-19 05:35:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-11-19 05:35:16,211 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 38 [2021-11-19 05:35:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:16,211 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-11-19 05:35:16,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 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) [2021-11-19 05:35:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-11-19 05:35:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:35:16,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:16,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:16,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:35:16,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:16,431 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr24ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:35:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1553697505, now seen corresponding path program 1 times [2021-11-19 05:35:16,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:16,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853259383] [2021-11-19 05:35:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:16,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:35:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:16,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:16,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853259383] [2021-11-19 05:35:16,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853259383] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:35:16,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995479314] [2021-11-19 05:35:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:16,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:35:16,532 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:35:16,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 05:35:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:16,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:35:16,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:16,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:35:16,833 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:35:16,834 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 12 treesize of output 11 [2021-11-19 05:35:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:16,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995479314] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:35:16,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:35:16,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 7 [2021-11-19 05:35:16,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368766381] [2021-11-19 05:35:16,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:16,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:35:16,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:35:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:35:16,885 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-11-19 05:35:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:17,231 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-11-19 05:35:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:35:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 39 [2021-11-19 05:35:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:17,233 INFO L225 Difference]: With dead ends: 114 [2021-11-19 05:35:17,233 INFO L226 Difference]: Without dead ends: 114 [2021-11-19 05:35:17,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:35:17,234 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 151 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:17,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 59 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:35:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-19 05:35:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2021-11-19 05:35:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 105 states have internal predecessors, (116), 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) [2021-11-19 05:35:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-11-19 05:35:17,257 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 39 [2021-11-19 05:35:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:17,257 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-11-19 05:35:17,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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) [2021-11-19 05:35:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-11-19 05:35:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:35:17,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:17,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:17,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:35:17,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:17,459 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:35:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -919982246, now seen corresponding path program 1 times [2021-11-19 05:35:17,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:17,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803887572] [2021-11-19 05:35:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:17,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:35:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:17,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:17,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803887572] [2021-11-19 05:35:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803887572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:35:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880244096] [2021-11-19 05:35:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:17,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:35:17,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:35:17,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 05:35:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:17,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 05:35:17,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:18,147 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:35:18,147 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 17 treesize of output 21 [2021-11-19 05:35:18,228 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 23 treesize of output 19 [2021-11-19 05:35:18,464 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:35:18,464 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 61 treesize of output 39 [2021-11-19 05:35:18,989 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:35:18,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 25 [2021-11-19 05:35:19,119 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-19 05:35:19,119 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 21 treesize of output 21 [2021-11-19 05:35:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:19,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:35:20,540 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int) (v_DerPreprocessor_10 Int)) (= (select (store |c_#valid| c_main_~a~0.base 0) (select (select (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_10)) c_main_~a~0.base) (+ c_main_~a~0.offset 4))) 1)) is different from false [2021-11-19 05:35:38,185 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 246 treesize of output 234 [2021-11-19 05:35:38,544 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:35:38,545 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 24 treesize of output 23 [2021-11-19 05:35:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-11-19 05:35:38,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880244096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:35:38,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:35:38,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 39 [2021-11-19 05:35:38,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634636159] [2021-11-19 05:35:38,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:38,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-19 05:35:38,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-19 05:35:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1292, Unknown=6, NotChecked=74, Total=1560 [2021-11-19 05:35:38,625 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 40 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 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) [2021-11-19 05:35:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:39,217 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2021-11-19 05:35:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:35:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 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 40 [2021-11-19 05:35:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:39,218 INFO L225 Difference]: With dead ends: 127 [2021-11-19 05:35:39,218 INFO L226 Difference]: Without dead ends: 127 [2021-11-19 05:35:39,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=345, Invalid=2203, Unknown=6, NotChecked=98, Total=2652 [2021-11-19 05:35:39,220 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 107 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:39,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 307 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2021-11-19 05:35:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-19 05:35:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2021-11-19 05:35:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 114 states have internal predecessors, (126), 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) [2021-11-19 05:35:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-11-19 05:35:39,226 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 40 [2021-11-19 05:35:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:39,226 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-11-19 05:35:39,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.5384615384615383) internal successors, (99), 39 states have internal predecessors, (99), 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) [2021-11-19 05:35:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-11-19 05:35:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:35:39,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:39,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:39,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:35:39,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:39,437 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr19REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:35:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -919982245, now seen corresponding path program 1 times [2021-11-19 05:35:39,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:39,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143205301] [2021-11-19 05:35:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:39,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:35:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:39,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143205301] [2021-11-19 05:35:39,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143205301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:35:39,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145939123] [2021-11-19 05:35:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:39,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:35:39,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:35:39,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 05:35:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:39,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-19 05:35:39,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:40,212 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-19 05:35:40,213 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 40 [2021-11-19 05:35:40,220 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-19 05:35:40,221 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 34 treesize of output 23 [2021-11-19 05:35:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:40,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:35:40,510 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:35:40,510 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 43 treesize of output 47 [2021-11-19 05:35:40,696 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 05:35:40,696 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 56 treesize of output 39 [2021-11-19 05:35:40,706 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-19 05:35:40,706 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 39 treesize of output 27 [2021-11-19 05:35:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:35:40,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145939123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:35:40,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:35:40,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2021-11-19 05:35:40,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638475918] [2021-11-19 05:35:40,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:35:40,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 05:35:40,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 05:35:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-11-19 05:35:40,937 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 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) [2021-11-19 05:35:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:43,401 INFO L93 Difference]: Finished difference Result 272 states and 286 transitions. [2021-11-19 05:35:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-19 05:35:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 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 40 [2021-11-19 05:35:43,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:43,403 INFO L225 Difference]: With dead ends: 272 [2021-11-19 05:35:43,403 INFO L226 Difference]: Without dead ends: 272 [2021-11-19 05:35:43,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=960, Invalid=4590, Unknown=0, NotChecked=0, Total=5550 [2021-11-19 05:35:43,405 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 673 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 113 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1428 Invalid, 0 Unknown, 438 Unchecked, 0.9s Time] [2021-11-19 05:35:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-19 05:35:43,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 168. [2021-11-19 05:35:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 153 states have (on average 1.2287581699346406) internal successors, (188), 164 states have internal predecessors, (188), 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) [2021-11-19 05:35:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 191 transitions. [2021-11-19 05:35:43,413 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 191 transitions. Word has length 40 [2021-11-19 05:35:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:43,413 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 191 transitions. [2021-11-19 05:35:43,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 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) [2021-11-19 05:35:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 191 transitions. [2021-11-19 05:35:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:35:43,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:43,415 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:43,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:35:43,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-19 05:35:43,637 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:35:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1769184012, now seen corresponding path program 1 times [2021-11-19 05:35:43,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:43,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530306221] [2021-11-19 05:35:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:43,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:35:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:44,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530306221] [2021-11-19 05:35:44,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530306221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:35:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291117453] [2021-11-19 05:35:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:44,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:35:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:35:44,046 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:35:44,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 05:35:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:44,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-19 05:35:44,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:44,343 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:35:44,344 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 17 treesize of output 21 [2021-11-19 05:35:44,434 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 23 treesize of output 19 [2021-11-19 05:35:44,701 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:35:44,701 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 52 treesize of output 28 [2021-11-19 05:35:44,796 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-11-19 05:35:44,796 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 47 treesize of output 49 [2021-11-19 05:35:44,885 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:35:44,885 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 53 treesize of output 40 [2021-11-19 05:35:45,232 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-19 05:35:45,233 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 59 [2021-11-19 05:35:45,519 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-19 05:35:45,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 36 [2021-11-19 05:35:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:35:45,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:36:06,349 INFO L354 Elim1Store]: treesize reduction 5, result has 88.1 percent of original size [2021-11-19 05:36:06,349 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 46 treesize of output 45 [2021-11-19 05:36:07,321 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (v_main_~p~0.offset_96 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) (+ c_main_~p~0.offset 4) c_main_~t~0.base)))) (store .cse0 c_main_~t~0.base (store (select .cse0 c_main_~t~0.base) v_main_~p~0.offset_96 v_DerPreprocessor_11))) c_main_~a~0.base) (+ c_main_~a~0.offset 4)) c_main_~p~0.base)) is different from false [2021-11-19 05:36:21,702 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 27252 treesize of output 26868 [2021-11-19 05:36:22,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:36:22,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:36:22,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-19 05:36:22,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746019001] [2021-11-19 05:36:22,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:36:22,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 05:36:22,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:36:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 05:36:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1433, Unknown=17, NotChecked=78, Total=1722 [2021-11-19 05:36:22,677 INFO L87 Difference]: Start difference. First operand 168 states and 191 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2021-11-19 05:36:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:36:30,139 INFO L93 Difference]: Finished difference Result 273 states and 305 transitions. [2021-11-19 05:36:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 05:36:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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 40 [2021-11-19 05:36:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:36:30,142 INFO L225 Difference]: With dead ends: 273 [2021-11-19 05:36:30,142 INFO L226 Difference]: Without dead ends: 273 [2021-11-19 05:36:30,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=695, Invalid=4257, Unknown=22, NotChecked=138, Total=5112 [2021-11-19 05:36:30,145 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 371 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:36:30,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 97 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 05:36:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-19 05:36:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 178. [2021-11-19 05:36:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 174 states have internal predecessors, (200), 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) [2021-11-19 05:36:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2021-11-19 05:36:30,153 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 40 [2021-11-19 05:36:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:36:30,153 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2021-11-19 05:36:30,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2021-11-19 05:36:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2021-11-19 05:36:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:36:30,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:36:30,155 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:36:30,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:36:30,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-19 05:36:30,361 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:36:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:36:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1769184013, now seen corresponding path program 1 times [2021-11-19 05:36:30,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:36:30,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624413729] [2021-11-19 05:36:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:30,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:36:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:36:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:30,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:36:30,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624413729] [2021-11-19 05:36:30,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624413729] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:36:30,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945832318] [2021-11-19 05:36:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:36:30,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:36:30,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:36:30,917 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:36:30,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 05:36:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:36:31,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-19 05:36:31,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:36:31,219 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:36:31,219 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 11 treesize of output 11 [2021-11-19 05:36:31,306 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 18 treesize of output 14 [2021-11-19 05:36:31,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:36:31,636 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:36:31,636 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 65 treesize of output 53 [2021-11-19 05:36:31,647 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:36:31,648 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 50 treesize of output 32 [2021-11-19 05:36:31,770 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:36:31,770 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 11 treesize of output 11 [2021-11-19 05:36:31,877 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:36:31,878 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 65 treesize of output 64 [2021-11-19 05:36:31,892 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:36:31,892 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 52 treesize of output 45 [2021-11-19 05:36:32,405 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-11-19 05:36:32,406 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 94 [2021-11-19 05:36:32,419 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:36:32,421 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 92 treesize of output 80 [2021-11-19 05:36:32,743 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:36:32,743 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 58 treesize of output 43 [2021-11-19 05:36:32,753 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:36:32,753 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 37 treesize of output 28 [2021-11-19 05:36:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:36:32,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:37:22,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 05:37:22,882 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 121 treesize of output 125 [2021-11-19 05:37:49,539 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 5520 treesize of output 5448 [2021-11-19 05:37:49,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18767 treesize of output 18575 [2021-11-19 05:37:50,258 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:37:50,259 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 15663 treesize of output 15662 [2021-11-19 05:37:50,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:37:50,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:37:50,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-19 05:37:50,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275963384] [2021-11-19 05:37:50,427 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:37:50,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 05:37:50,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:37:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 05:37:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1946, Unknown=17, NotChecked=0, Total=2162 [2021-11-19 05:37:50,429 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2021-11-19 05:38:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:38:05,001 INFO L93 Difference]: Finished difference Result 292 states and 323 transitions. [2021-11-19 05:38:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 05:38:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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 40 [2021-11-19 05:38:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:38:05,004 INFO L225 Difference]: With dead ends: 292 [2021-11-19 05:38:05,004 INFO L226 Difference]: Without dead ends: 292 [2021-11-19 05:38:05,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 89.5s TimeCoverageRelationStatistics Valid=592, Invalid=4497, Unknown=23, NotChecked=0, Total=5112 [2021-11-19 05:38:05,007 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 345 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:38:05,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 107 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:38:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-19 05:38:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 183. [2021-11-19 05:38:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 168 states have (on average 1.2261904761904763) internal successors, (206), 179 states have internal predecessors, (206), 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) [2021-11-19 05:38:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 209 transitions. [2021-11-19 05:38:05,017 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 209 transitions. Word has length 40 [2021-11-19 05:38:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:38:05,017 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 209 transitions. [2021-11-19 05:38:05,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2021-11-19 05:38:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 209 transitions. [2021-11-19 05:38:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:38:05,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:38:05,019 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:38:05,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-19 05:38:05,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-19 05:38:05,225 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:38:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:38:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1072395614, now seen corresponding path program 1 times [2021-11-19 05:38:05,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:38:05,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999386159] [2021-11-19 05:38:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:38:05,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:38:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:38:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:38:05,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:38:05,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999386159] [2021-11-19 05:38:05,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999386159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:38:05,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223700173] [2021-11-19 05:38:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:38:05,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:38:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:38:05,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:38:05,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 05:38:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:38:05,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-19 05:38:05,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:38:05,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:38:05,885 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:38:05,885 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 17 treesize of output 21 [2021-11-19 05:38:05,984 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 23 treesize of output 19 [2021-11-19 05:38:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:38:05,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:38:06,049 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 13 [2021-11-19 05:38:06,180 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 19 treesize of output 18 [2021-11-19 05:38:06,262 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:38:06,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:38:06,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 05:38:06,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:38:06,349 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 34 treesize of output 21 [2021-11-19 05:38:06,411 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 41 treesize of output 23 [2021-11-19 05:38:06,603 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-19 05:38:06,603 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 38 treesize of output 40 [2021-11-19 05:38:06,816 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 05:38:06,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-11-19 05:38:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:38:06,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:38:07,871 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (not (= 3 (select (select (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset)))) is different from false [2021-11-19 05:38:08,763 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int)) (not (= (select (select (store |c_#memory_int| |c_main_#t~mem6.base| (store (select |c_#memory_int| |c_main_#t~mem6.base|) main_~p~0.offset 3)) c_main_~a~0.base) c_main_~a~0.offset) 3))) is different from false [2021-11-19 05:38:09,667 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~p~0.offset_111 Int)) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~p~0.base) (+ c_main_~p~0.offset 4)))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) v_main_~p~0.offset_111 3))) c_main_~a~0.base) c_main_~a~0.offset) 3))) is different from false [2021-11-19 05:38:10,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_17 Int) (v_main_~p~0.offset_111 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int| c_main_~p~0.base (store (select |c_#memory_int| c_main_~p~0.base) (+ c_main_~p~0.offset 4) v_DerPreprocessor_17)))) (store .cse0 c_main_~t~0.base (store (select .cse0 c_main_~t~0.base) v_main_~p~0.offset_111 3))) c_main_~a~0.base) c_main_~a~0.offset) 3))) is different from false [2021-11-19 05:38:36,073 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 34444 treesize of output 34188 [2021-11-19 05:38:39,373 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-19 05:38:39,374 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 31308 treesize of output 31308 [2021-11-19 05:38:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 8 not checked. [2021-11-19 05:38:41,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223700173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:38:41,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:38:41,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 49 [2021-11-19 05:38:41,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592453165] [2021-11-19 05:38:41,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:38:41,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-19 05:38:41,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:38:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-19 05:38:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1732, Unknown=16, NotChecked=356, Total=2352 [2021-11-19 05:38:41,637 INFO L87 Difference]: Start difference. First operand 183 states and 209 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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) [2021-11-19 05:39:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:28,405 INFO L93 Difference]: Finished difference Result 345 states and 373 transitions. [2021-11-19 05:39:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-19 05:39:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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 41 [2021-11-19 05:39:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:28,407 INFO L225 Difference]: With dead ends: 345 [2021-11-19 05:39:28,407 INFO L226 Difference]: Without dead ends: 345 [2021-11-19 05:39:28,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=980, Invalid=5815, Unknown=27, NotChecked=660, Total=7482 [2021-11-19 05:39:28,411 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 555 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1522 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:28,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 250 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1610 Invalid, 0 Unknown, 1522 Unchecked, 0.9s Time] [2021-11-19 05:39:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-19 05:39:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 183. [2021-11-19 05:39:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 168 states have (on average 1.2202380952380953) internal successors, (205), 179 states have internal predecessors, (205), 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) [2021-11-19 05:39:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2021-11-19 05:39:28,419 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 41 [2021-11-19 05:39:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:28,420 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2021-11-19 05:39:28,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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) [2021-11-19 05:39:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2021-11-19 05:39:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 05:39:28,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:28,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:28,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-19 05:39:28,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-19 05:39:28,625 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:39:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1004678938, now seen corresponding path program 1 times [2021-11-19 05:39:28,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:28,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941204432] [2021-11-19 05:39:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:28,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:28,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:39:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:39:28,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:28,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941204432] [2021-11-19 05:39:28,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941204432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:39:28,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050314602] [2021-11-19 05:39:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:28,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:28,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:39:28,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:39:28,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 05:39:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:29,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 05:39:29,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:39:29,145 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:39:29,145 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 11 treesize of output 11 [2021-11-19 05:39:29,183 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 23 treesize of output 19 [2021-11-19 05:39:29,287 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:39:29,288 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 31 [2021-11-19 05:39:29,443 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 25 treesize of output 13 [2021-11-19 05:39:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:39:29,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:39:34,615 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int) (v_DerPreprocessor_19 Int)) (<= (+ (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) main_~p~0.offset v_DerPreprocessor_19)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)) 1) |c_#StackHeapBarrier|)) is different from false [2021-11-19 05:39:37,377 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 222 treesize of output 210 [2021-11-19 05:39:37,819 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:39:37,820 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 24 treesize of output 23 [2021-11-19 05:39:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:39:37,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050314602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:39:37,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:39:37,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 30 [2021-11-19 05:39:37,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175141196] [2021-11-19 05:39:37,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:39:37,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 05:39:37,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:39:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 05:39:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=740, Unknown=3, NotChecked=56, Total=930 [2021-11-19 05:39:37,911 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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) [2021-11-19 05:39:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:39,284 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-11-19 05:39:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:39:39,285 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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 43 [2021-11-19 05:39:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:39,286 INFO L225 Difference]: With dead ends: 208 [2021-11-19 05:39:39,286 INFO L226 Difference]: Without dead ends: 208 [2021-11-19 05:39:39,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=486, Invalid=2167, Unknown=3, NotChecked=100, Total=2756 [2021-11-19 05:39:39,287 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 340 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:39,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 125 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1174 Invalid, 0 Unknown, 322 Unchecked, 0.8s Time] [2021-11-19 05:39:39,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-19 05:39:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 182. [2021-11-19 05:39:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 167 states have (on average 1.221556886227545) internal successors, (204), 178 states have internal predecessors, (204), 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) [2021-11-19 05:39:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2021-11-19 05:39:39,294 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 43 [2021-11-19 05:39:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:39,294 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2021-11-19 05:39:39,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 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) [2021-11-19 05:39:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2021-11-19 05:39:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:39:39,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:39,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:39,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:39:39,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-19 05:39:39,509 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:39:39,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1080230117, now seen corresponding path program 1 times [2021-11-19 05:39:39,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:39,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708601019] [2021-11-19 05:39:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:39,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:39:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:39:39,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:39,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708601019] [2021-11-19 05:39:39,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708601019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:39:39,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964387736] [2021-11-19 05:39:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:39,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:39,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:39:39,808 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:39:39,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 05:39:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:39,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 05:39:39,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:39:40,076 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:39:40,077 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 11 treesize of output 11 [2021-11-19 05:39:40,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 05:39:40,115 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 18 treesize of output 14 [2021-11-19 05:39:40,130 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 16 treesize of output 8 [2021-11-19 05:39:40,172 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 05:39:40,172 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 15 [2021-11-19 05:39:40,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 05:39:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:39:40,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:39:47,122 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~p~0.offset Int) (v_DerPreprocessor_20 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) main_~p~0.offset v_DerPreprocessor_20)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)) 0)) is different from false [2021-11-19 05:39:52,141 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 206 treesize of output 194 [2021-11-19 05:39:52,375 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:39:52,375 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 24 treesize of output 23 [2021-11-19 05:39:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:39:53,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964387736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:39:53,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:39:53,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 27 [2021-11-19 05:39:53,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372209755] [2021-11-19 05:39:53,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:39:53,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:39:53,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:39:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:39:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=586, Unknown=7, NotChecked=50, Total=756 [2021-11-19 05:39:53,477 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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) [2021-11-19 05:39:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:39:54,702 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2021-11-19 05:39:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-19 05:39:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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 44 [2021-11-19 05:39:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:39:54,704 INFO L225 Difference]: With dead ends: 209 [2021-11-19 05:39:54,704 INFO L226 Difference]: Without dead ends: 209 [2021-11-19 05:39:54,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=510, Invalid=2139, Unknown=7, NotChecked=100, Total=2756 [2021-11-19 05:39:54,705 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 501 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:39:54,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 109 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 782 Invalid, 0 Unknown, 457 Unchecked, 0.5s Time] [2021-11-19 05:39:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-19 05:39:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2021-11-19 05:39:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 180 states have internal predecessors, (206), 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) [2021-11-19 05:39:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2021-11-19 05:39:54,712 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 44 [2021-11-19 05:39:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:39:54,712 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2021-11-19 05:39:54,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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) [2021-11-19 05:39:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2021-11-19 05:39:54,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:39:54,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:39:54,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:39:54,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:39:54,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-19 05:39:54,914 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:39:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:39:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 872604907, now seen corresponding path program 1 times [2021-11-19 05:39:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:39:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692403792] [2021-11-19 05:39:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:54,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:39:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:39:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:39:55,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:39:55,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692403792] [2021-11-19 05:39:55,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692403792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:39:55,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165223895] [2021-11-19 05:39:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:39:55,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:39:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:39:55,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:39:55,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 05:39:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:39:55,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 05:39:55,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:39:55,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 05:39:55,677 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 11 treesize of output 11 [2021-11-19 05:39:55,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-19 05:39:55,905 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:39:55,906 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 53 treesize of output 31 [2021-11-19 05:39:56,184 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:39:56,184 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 38 treesize of output 23 [2021-11-19 05:39:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:39:56,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:03,706 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 94 treesize of output 88 [2021-11-19 05:40:04,110 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 05:40:04,110 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 43 treesize of output 42 [2021-11-19 05:40:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:40:04,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165223895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:40:04,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:40:04,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 44 [2021-11-19 05:40:04,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137511739] [2021-11-19 05:40:04,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:40:04,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-19 05:40:04,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:40:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-19 05:40:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1723, Unknown=5, NotChecked=0, Total=1892 [2021-11-19 05:40:04,263 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand has 44 states, 44 states have (on average 2.477272727272727) internal successors, (109), 43 states have internal predecessors, (109), 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) [2021-11-19 05:40:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:06,868 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-11-19 05:40:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-19 05:40:06,873 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.477272727272727) internal successors, (109), 43 states have internal predecessors, (109), 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 45 [2021-11-19 05:40:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:06,874 INFO L225 Difference]: With dead ends: 192 [2021-11-19 05:40:06,874 INFO L226 Difference]: Without dead ends: 189 [2021-11-19 05:40:06,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=669, Invalid=5968, Unknown=5, NotChecked=0, Total=6642 [2021-11-19 05:40:06,876 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 289 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:06,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 155 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1645 Invalid, 0 Unknown, 316 Unchecked, 1.0s Time] [2021-11-19 05:40:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-19 05:40:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-11-19 05:40:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 175 states have internal predecessors, (200), 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) [2021-11-19 05:40:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 203 transitions. [2021-11-19 05:40:06,883 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 203 transitions. Word has length 45 [2021-11-19 05:40:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:06,883 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 203 transitions. [2021-11-19 05:40:06,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.477272727272727) internal successors, (109), 43 states have internal predecessors, (109), 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) [2021-11-19 05:40:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 203 transitions. [2021-11-19 05:40:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:40:06,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:06,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:06,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 05:40:07,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-19 05:40:07,105 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:40:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 871187851, now seen corresponding path program 1 times [2021-11-19 05:40:07,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:40:07,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552153418] [2021-11-19 05:40:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:40:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:40:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:40:07,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:40:07,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552153418] [2021-11-19 05:40:07,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552153418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:40:07,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766851449] [2021-11-19 05:40:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:07,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:40:07,610 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:40:07,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 05:40:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:07,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-19 05:40:07,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:08,007 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 31 treesize of output 27 [2021-11-19 05:40:08,280 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:40:08,281 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 69 treesize of output 47 [2021-11-19 05:40:08,708 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:40:08,708 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 48 treesize of output 33 [2021-11-19 05:40:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:40:08,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:40:10,574 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_22 Int) (main_~p~0.offset Int)) (= |c_old(#valid)| (store (store |c_#valid| c_main_~a~0.base 0) (select (select (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_22)) c_main_~a~0.base) (+ c_main_~a~0.offset 4)) 0))) is different from false [2021-11-19 05:40:36,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 274 [2021-11-19 05:40:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2021-11-19 05:40:52,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766851449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:40:52,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:40:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 45 [2021-11-19 05:40:52,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423483292] [2021-11-19 05:40:52,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:40:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-19 05:40:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:40:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-19 05:40:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1792, Unknown=17, NotChecked=86, Total=2070 [2021-11-19 05:40:52,521 INFO L87 Difference]: Start difference. First operand 179 states and 203 transitions. Second operand has 46 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 44 states have internal predecessors, (115), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:40:55,441 INFO L93 Difference]: Finished difference Result 185 states and 208 transitions. [2021-11-19 05:40:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:40:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 44 states have internal predecessors, (115), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-11-19 05:40:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:40:55,443 INFO L225 Difference]: With dead ends: 185 [2021-11-19 05:40:55,444 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 05:40:55,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=280, Invalid=2676, Unknown=18, NotChecked=106, Total=3080 [2021-11-19 05:40:55,445 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 76 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 383 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:40:55,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 425 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 512 Invalid, 0 Unknown, 383 Unchecked, 0.4s Time] [2021-11-19 05:40:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 05:40:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-19 05:40:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.2413793103448276) internal successors, (180), 156 states have internal predecessors, (180), 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) [2021-11-19 05:40:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 183 transitions. [2021-11-19 05:40:55,451 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 183 transitions. Word has length 45 [2021-11-19 05:40:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:40:55,451 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 183 transitions. [2021-11-19 05:40:55,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 44 states have internal predecessors, (115), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:40:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 183 transitions. [2021-11-19 05:40:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:40:55,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:40:55,452 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:40:55,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 05:40:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:55,653 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:40:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:40:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 491060887, now seen corresponding path program 1 times [2021-11-19 05:40:55,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:40:55,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415348607] [2021-11-19 05:40:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:55,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:40:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:40:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:40:56,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:40:56,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415348607] [2021-11-19 05:40:56,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415348607] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:40:56,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106530910] [2021-11-19 05:40:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:40:56,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:40:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:40:56,158 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:40:56,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 05:40:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:40:56,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-19 05:40:56,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:40:56,408 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:40:56,408 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 17 treesize of output 21 [2021-11-19 05:40:56,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 05:40:56,493 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 23 treesize of output 19 [2021-11-19 05:40:56,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 05:40:56,782 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:40:56,782 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 46 treesize of output 22 [2021-11-19 05:40:56,795 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 34 treesize of output 16 [2021-11-19 05:40:56,915 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-19 05:40:56,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-19 05:40:57,016 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 31 treesize of output 30 [2021-11-19 05:40:57,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:40:57,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 05:40:57,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2021-11-19 05:40:57,355 INFO L354 Elim1Store]: treesize reduction 108, result has 18.8 percent of original size [2021-11-19 05:40:57,355 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 283 treesize of output 111 [2021-11-19 05:40:57,370 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-19 05:40:57,370 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 214 treesize of output 150 [2021-11-19 05:40:57,384 INFO L354 Elim1Store]: treesize reduction 97, result has 16.4 percent of original size [2021-11-19 05:40:57,385 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 145 treesize of output 126 [2021-11-19 05:40:57,880 INFO L354 Elim1Store]: treesize reduction 49, result has 14.0 percent of original size [2021-11-19 05:40:57,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 78 [2021-11-19 05:40:57,893 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:40:57,894 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 69 treesize of output 48 [2021-11-19 05:40:58,115 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 05:40:58,116 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 32 treesize of output 20 [2021-11-19 05:40:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:40:58,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:41:58,610 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 15090 treesize of output 13842 [2021-11-19 05:42:29,388 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 74391 treesize of output 73431 [2021-11-19 05:42:31,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99249 treesize of output 98649 [2021-11-19 05:42:34,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 05:42:34,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:42:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-19 05:42:34,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808177500] [2021-11-19 05:42:34,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:42:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:42:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:42:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:42:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2136, Unknown=30, NotChecked=0, Total=2352 [2021-11-19 05:42:34,865 INFO L87 Difference]: Start difference. First operand 160 states and 183 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 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) [2021-11-19 05:42:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:42:38,317 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2021-11-19 05:42:38,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-19 05:42:38,317 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 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 45 [2021-11-19 05:42:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:42:38,319 INFO L225 Difference]: With dead ends: 257 [2021-11-19 05:42:38,319 INFO L226 Difference]: Without dead ends: 257 [2021-11-19 05:42:38,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 67.5s TimeCoverageRelationStatistics Valid=531, Invalid=4989, Unknown=30, NotChecked=0, Total=5550 [2021-11-19 05:42:38,320 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 274 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:42:38,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 125 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:42:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-19 05:42:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 160. [2021-11-19 05:42:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 156 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) [2021-11-19 05:42:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 182 transitions. [2021-11-19 05:42:38,328 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 182 transitions. Word has length 45 [2021-11-19 05:42:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:42:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 182 transitions. [2021-11-19 05:42:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 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) [2021-11-19 05:42:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 182 transitions. [2021-11-19 05:42:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 05:42:38,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:42:38,330 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:42:38,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:42:38,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-19 05:42:38,554 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-19 05:42:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:42:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash -536864498, now seen corresponding path program 1 times [2021-11-19 05:42:38,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:42:38,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406684917] [2021-11-19 05:42:38,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:42:38,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:42:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:42:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:42:39,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:42:39,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406684917] [2021-11-19 05:42:39,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406684917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:42:39,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612193991] [2021-11-19 05:42:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:42:39,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:42:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:42:39,322 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:42:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c70ed8a-34b4-493b-a1d1-96d1b69de9c9/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 05:42:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:42:39,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-19 05:42:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:42:39,655 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-19 05:42:39,655 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 17 treesize of output 21 [2021-11-19 05:42:39,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-19 05:42:39,764 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 23 treesize of output 19 [2021-11-19 05:42:40,170 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:42:40,170 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 85 treesize of output 61 [2021-11-19 05:42:40,186 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:42:40,187 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 70 treesize of output 52 [2021-11-19 05:42:40,364 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-19 05:42:40,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 88 [2021-11-19 05:42:40,569 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:42:40,569 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 100 treesize of output 93 [2021-11-19 05:42:40,585 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-19 05:42:40,585 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 87 treesize of output 68 [2021-11-19 05:42:41,315 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-19 05:42:41,316 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 96 [2021-11-19 05:42:41,340 INFO L354 Elim1Store]: treesize reduction 71, result has 11.3 percent of original size [2021-11-19 05:42:41,340 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 145 treesize of output 91 [2021-11-19 05:42:42,096 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-19 05:42:42,096 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 120 treesize of output 105 [2021-11-19 05:42:43,137 INFO L354 Elim1Store]: treesize reduction 82, result has 11.8 percent of original size [2021-11-19 05:42:43,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 61 [2021-11-19 05:42:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:42:43,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:42:45,841 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_28 Int) (v_DerPreprocessor_29 Int) (main_~p~0.offset Int)) (= (select |c_#valid| (let ((.cse1 (+ c_main_~a~0.offset 4))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_28)))) (select .cse0 (select (select .cse0 c_main_~a~0.base) .cse1))) (+ (select (select (store |c_#memory_$Pointer$.offset| c_main_~p~0.base (store (select |c_#memory_$Pointer$.offset| c_main_~p~0.base) main_~p~0.offset v_DerPreprocessor_29)) c_main_~a~0.base) .cse1) 4)))) 1)) is different from false [2021-11-19 05:43:12,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_28 Int) (v_DerPreprocessor_29 Int) (v_main_~p~0.offset_159 Int)) (= (select |c_#valid| (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~p~0.base) (+ c_main_~p~0.offset 4))) (.cse1 (+ c_main_~a~0.offset 4))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) v_main_~p~0.offset_159 v_DerPreprocessor_28)))) (select .cse0 (select (select .cse0 c_main_~a~0.base) .cse1))) (+ (select (select (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) v_main_~p~0.offset_159 v_DerPreprocessor_29)) c_main_~a~0.base) .cse1) 4)))) 1)) is different from false [2021-11-19 05:43:14,937 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_28 Int) (v_DerPreprocessor_29 Int) (main_~t~0.offset Int) (v_main_~p~0.offset_159 Int)) (= (select |c_#valid| (let ((.cse3 (+ c_main_~p~0.offset 4)) (.cse1 (+ c_main_~a~0.offset 4))) (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| c_main_~p~0.base (store (select |c_#memory_$Pointer$.base| c_main_~p~0.base) .cse3 c_main_~t~0.base)))) (store .cse2 c_main_~t~0.base (store (select .cse2 c_main_~t~0.base) v_main_~p~0.offset_159 v_DerPreprocessor_28))))) (select .cse0 (select (select .cse0 c_main_~a~0.base) .cse1))) (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| c_main_~p~0.base (store (select |c_#memory_$Pointer$.offset| c_main_~p~0.base) .cse3 main_~t~0.offset)))) (store .cse4 c_main_~t~0.base (store (select .cse4 c_main_~t~0.base) v_main_~p~0.offset_159 v_DerPreprocessor_29))) c_main_~a~0.base) .cse1) 4)))) 1)) is different from false [2021-11-19 05:43:21,348 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 6130 treesize of output 6118 [2021-11-19 05:43:44,043 WARN L227 SmtUtils]: Spent 22.32s on a formula simplification. DAG size of input: 1201 DAG size of output: 530 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 05:43:44,045 INFO L354 Elim1Store]: treesize reduction 4895, result has 22.2 percent of original size [2021-11-19 05:43:44,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 24 new quantified variables, introduced 256 case distinctions, treesize of input 24412438 treesize of output 23777934