./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:42,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:42,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:42,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:42,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:42,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:42,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:42,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:42,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:42,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:42,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:42,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:42,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:42,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:42,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:42,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:42,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:42,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:42,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:42,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:42,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:42,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:42,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:42,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:42,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:42,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:42,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:42,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:42,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:42,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:42,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:42,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:42,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:42,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:42,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:42,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:42,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:42,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:42,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:42,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:42,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:42,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:22:42,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:42,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:42,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:42,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:42,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:42,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:42,597 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:42,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:42,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:42,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:42,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:42,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:42,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:22:42,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:42,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:22:42,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:42,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:42,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:42,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:22:42,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:42,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:42,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:42,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:42,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:42,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:42,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:22:42,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:42,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:42,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:22:42,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:22:42,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:22:42,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:42,605 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_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-11-07 07:22:42,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:42,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:42,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:42,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:42,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:42,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-07 07:22:43,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/data/95c23690e/54488bd9b9614aef84d730393c29335a/FLAG85acab0a6 [2021-11-07 07:22:43,793 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:43,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-11-07 07:22:43,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/data/95c23690e/54488bd9b9614aef84d730393c29335a/FLAG85acab0a6 [2021-11-07 07:22:43,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/data/95c23690e/54488bd9b9614aef84d730393c29335a [2021-11-07 07:22:43,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:43,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:43,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:43,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:43,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:43,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:43" (1/1) ... [2021-11-07 07:22:43,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378da760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:43, skipping insertion in model container [2021-11-07 07:22:43,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:43" (1/1) ... [2021-11-07 07:22:43,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:44,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:44,750 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-07 07:22:45,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-07 07:22:45,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:45,085 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:45,147 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-11-07 07:22:45,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-11-07 07:22:45,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:45,340 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:45,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45 WrapperNode [2021-11-07 07:22:45,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:45,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:45,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:45,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:45,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:45,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:45,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:45,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:45,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:45,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:45,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:45,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:45,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (1/1) ... [2021-11-07 07:22:45,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:45,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:45,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:22:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:22:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:22:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:22:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:22:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:22:45,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:22:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:48,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:48,186 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-07 07:22:48,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:48 BoogieIcfgContainer [2021-11-07 07:22:48,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:48,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:48,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:48,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:48,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:43" (1/3) ... [2021-11-07 07:22:48,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:48, skipping insertion in model container [2021-11-07 07:22:48,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:45" (2/3) ... [2021-11-07 07:22:48,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd7caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:48, skipping insertion in model container [2021-11-07 07:22:48,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:48" (3/3) ... [2021-11-07 07:22:48,202 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2021-11-07 07:22:48,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:48,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:22:48,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:48,288 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-07 07:22:48,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:22:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 07:22:48,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:48,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:48,347 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-07 07:22:48,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326705721] [2021-11-07 07:22:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:48,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:48,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326705721] [2021-11-07 07:22:48,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326705721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:48,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:48,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:48,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673539762] [2021-11-07 07:22:48,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:22:48,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:22:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:22:48,681 INFO L87 Difference]: Start difference. First operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:48,800 INFO L93 Difference]: Finished difference Result 614 states and 1036 transitions. [2021-11-07 07:22:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:22:48,802 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 07:22:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:48,822 INFO L225 Difference]: With dead ends: 614 [2021-11-07 07:22:48,822 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 07:22:48,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:22:48,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 07:22:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-07 07:22:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-07 07:22:48,924 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-07 07:22:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:48,924 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-07 07:22:48,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-07 07:22:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:22:48,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:48,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:48,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:22:48,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-07 07:22:48,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369663886] [2021-11-07 07:22:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:48,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:48,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226451485] [2021-11-07 07:22:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:48,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:48,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:22:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:22:49,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:49,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369663886] [2021-11-07 07:22:49,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:49,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226451485] [2021-11-07 07:22:49,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226451485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:49,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:49,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:49,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490696666] [2021-11-07 07:22:49,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:49,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:49,471 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:49,530 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-07 07:22:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:49,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 07:22:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:49,536 INFO L225 Difference]: With dead ends: 587 [2021-11-07 07:22:49,536 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 07:22:49,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 07:22:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-07 07:22:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 254 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-07 07:22:49,559 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-07 07:22:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:49,560 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-07 07:22:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-07 07:22:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:49,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:49,574 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:49,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:49,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-07 07:22:49,800 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-07 07:22:49,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:49,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543216077] [2021-11-07 07:22:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:49,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:49,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768418143] [2021-11-07 07:22:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:49,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:22:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:50,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:50,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:50,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:50,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543216077] [2021-11-07 07:22:50,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:50,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768418143] [2021-11-07 07:22:50,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768418143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:50,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:50,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:50,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418941638] [2021-11-07 07:22:50,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:50,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:50,694 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:50,798 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-07 07:22:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:50,803 INFO L225 Difference]: With dead ends: 528 [2021-11-07 07:22:50,803 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 07:22:50,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 07:22:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-07 07:22:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.3159851301115242) internal successors, (354), 274 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-07 07:22:50,834 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-07 07:22:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:50,834 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-07 07:22:50,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-07 07:22:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:50,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:50,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:50,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:51,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:51,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-07 07:22:51,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:51,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502511373] [2021-11-07 07:22:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:51,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:51,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:51,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620038782] [2021-11-07 07:22:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:51,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:51,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:51,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:22:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:51,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:51,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:51,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:51,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502511373] [2021-11-07 07:22:51,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:51,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620038782] [2021-11-07 07:22:51,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620038782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:51,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:51,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:51,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453653795] [2021-11-07 07:22:51,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:51,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:51,870 INFO L87 Difference]: Start difference. First operand 275 states and 354 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:51,959 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-07 07:22:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:51,964 INFO L225 Difference]: With dead ends: 568 [2021-11-07 07:22:51,964 INFO L226 Difference]: Without dead ends: 296 [2021-11-07 07:22:51,965 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-07 07:22:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-07 07:22:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2941176470588236) internal successors, (374), 294 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-07 07:22:51,979 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-07 07:22:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:51,980 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-07 07:22:51,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-07 07:22:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:51,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:51,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:52,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:52,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-07 07:22:52,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:52,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322296724] [2021-11-07 07:22:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:52,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:52,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645565246] [2021-11-07 07:22:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:52,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:52,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:22:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:52,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:52,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:52,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322296724] [2021-11-07 07:22:52,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:52,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645565246] [2021-11-07 07:22:52,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645565246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:52,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:52,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:52,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183701642] [2021-11-07 07:22:52,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:52,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:52,918 INFO L87 Difference]: Start difference. First operand 295 states and 374 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:52,992 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-07 07:22:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:52,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:52,996 INFO L225 Difference]: With dead ends: 397 [2021-11-07 07:22:52,996 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 07:22:52,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 07:22:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-07 07:22:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 07:22:53,005 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-07 07:22:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:53,006 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 07:22:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 07:22:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:53,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:53,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:53,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:53,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:53,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-07 07:22:53,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:53,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859635491] [2021-11-07 07:22:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:53,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:53,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:53,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440723510] [2021-11-07 07:22:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:53,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:53,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:53,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:53,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:22:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:53,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:53,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:54,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:54,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859635491] [2021-11-07 07:22:54,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:54,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440723510] [2021-11-07 07:22:54,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440723510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:54,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:54,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:54,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771152452] [2021-11-07 07:22:54,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:54,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:54,069 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:54,152 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-07 07:22:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:54,155 INFO L225 Difference]: With dead ends: 619 [2021-11-07 07:22:54,155 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 07:22:54,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 07:22:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-07 07:22:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.264406779661017) internal successors, (373), 300 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-07 07:22:54,165 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-07 07:22:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:54,165 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-07 07:22:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-07 07:22:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:54,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:54,168 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:54,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:54,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:54,385 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:54,385 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-07 07:22:54,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:54,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239103766] [2021-11-07 07:22:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:54,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:54,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:54,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005686369] [2021-11-07 07:22:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:54,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:54,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:54,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:22:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:54,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:54,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:55,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:55,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239103766] [2021-11-07 07:22:55,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:55,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005686369] [2021-11-07 07:22:55,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005686369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:55,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:55,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:55,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363575123] [2021-11-07 07:22:55,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:55,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:55,185 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:55,268 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-07 07:22:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:55,272 INFO L225 Difference]: With dead ends: 680 [2021-11-07 07:22:55,272 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 07:22:55,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 07:22:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-07 07:22:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-07 07:22:55,283 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-07 07:22:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:55,284 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-07 07:22:55,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-07 07:22:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:55,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:55,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:55,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:55,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:55,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-07 07:22:55,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:55,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872320873] [2021-11-07 07:22:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:55,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:55,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:55,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194387554] [2021-11-07 07:22:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:55,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:55,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:55,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:22:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:55,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:55,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:56,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:56,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872320873] [2021-11-07 07:22:56,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:56,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194387554] [2021-11-07 07:22:56,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194387554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:56,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:56,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:56,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999998063] [2021-11-07 07:22:56,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:56,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:56,243 INFO L87 Difference]: Start difference. First operand 287 states and 352 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:56,330 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-07 07:22:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:56,333 INFO L225 Difference]: With dead ends: 379 [2021-11-07 07:22:56,334 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 07:22:56,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 07:22:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-07 07:22:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2397003745318351) internal successors, (331), 272 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-07 07:22:56,344 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-07 07:22:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:56,345 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-07 07:22:56,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-07 07:22:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:22:56,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:56,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:56,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:56,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:56,552 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-07 07:22:56,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:56,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469410132] [2021-11-07 07:22:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:56,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:56,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518554892] [2021-11-07 07:22:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:56,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:56,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:56,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:22:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:57,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:57,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:57,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:57,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469410132] [2021-11-07 07:22:57,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:57,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518554892] [2021-11-07 07:22:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518554892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:57,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:57,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 07:22:57,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669052999] [2021-11-07 07:22:57,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:57,643 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:57,699 INFO L93 Difference]: Finished difference Result 811 states and 984 transitions. [2021-11-07 07:22:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:22:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:57,705 INFO L225 Difference]: With dead ends: 811 [2021-11-07 07:22:57,705 INFO L226 Difference]: Without dead ends: 723 [2021-11-07 07:22:57,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-07 07:22:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 455. [2021-11-07 07:22:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 449 states have (on average 1.2316258351893097) internal successors, (553), 454 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 553 transitions. [2021-11-07 07:22:57,727 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 553 transitions. Word has length 140 [2021-11-07 07:22:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:57,728 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 553 transitions. [2021-11-07 07:22:57,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 553 transitions. [2021-11-07 07:22:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 07:22:57,733 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:57,733 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:57,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 07:22:57,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:57,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:57,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1379453485, now seen corresponding path program 2 times [2021-11-07 07:22:57,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:57,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003707473] [2021-11-07 07:22:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:57,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:57,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:57,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609188741] [2021-11-07 07:22:57,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:57,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:57,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:58,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:22:58,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:58,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:58,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:58,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:59,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:59,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003707473] [2021-11-07 07:22:59,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:59,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609188741] [2021-11-07 07:22:59,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609188741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:59,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:59,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:22:59,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684501062] [2021-11-07 07:22:59,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:59,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:59,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:59,389 INFO L87 Difference]: Start difference. First operand 455 states and 553 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:59,487 INFO L93 Difference]: Finished difference Result 1080 states and 1310 transitions. [2021-11-07 07:22:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 07:22:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:59,495 INFO L225 Difference]: With dead ends: 1080 [2021-11-07 07:22:59,495 INFO L226 Difference]: Without dead ends: 992 [2021-11-07 07:22:59,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-07 07:22:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 637. [2021-11-07 07:22:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 631 states have (on average 1.2282091917591125) internal successors, (775), 636 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 775 transitions. [2021-11-07 07:22:59,530 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 775 transitions. Word has length 238 [2021-11-07 07:22:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:59,531 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 775 transitions. [2021-11-07 07:22:59,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 775 transitions. [2021-11-07 07:22:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-07 07:22:59,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:59,541 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:59,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:59,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:22:59,756 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:22:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash 449267140, now seen corresponding path program 3 times [2021-11-07 07:22:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:59,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018094116] [2021-11-07 07:22:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:59,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:59,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:59,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339303731] [2021-11-07 07:22:59,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:59,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:59,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:59,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:23:00,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:00,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:00,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:23:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-07 07:23:02,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:02,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018094116] [2021-11-07 07:23:02,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:02,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339303731] [2021-11-07 07:23:02,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339303731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:02,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:02,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:23:02,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343296361] [2021-11-07 07:23:02,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:23:02,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:23:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:02,617 INFO L87 Difference]: Start difference. First operand 637 states and 775 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:02,721 INFO L93 Difference]: Finished difference Result 1198 states and 1457 transitions. [2021-11-07 07:23:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:23:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2021-11-07 07:23:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:02,727 INFO L225 Difference]: With dead ends: 1198 [2021-11-07 07:23:02,727 INFO L226 Difference]: Without dead ends: 706 [2021-11-07 07:23:02,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-07 07:23:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 694. [2021-11-07 07:23:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 688 states have (on average 1.2311046511627908) internal successors, (847), 693 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 847 transitions. [2021-11-07 07:23:02,760 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 847 transitions. Word has length 336 [2021-11-07 07:23:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:02,761 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 847 transitions. [2021-11-07 07:23:02,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 847 transitions. [2021-11-07 07:23:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-07 07:23:02,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:02,770 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:02,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 07:23:02,984 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1643774844, now seen corresponding path program 1 times [2021-11-07 07:23:02,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:02,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864027960] [2021-11-07 07:23:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:02,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:03,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:03,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954335389] [2021-11-07 07:23:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:03,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:03,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:03,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:23:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:03,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:23:03,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:05,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:05,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864027960] [2021-11-07 07:23:05,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:05,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954335389] [2021-11-07 07:23:05,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954335389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:05,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:05,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 07:23:05,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556021821] [2021-11-07 07:23:05,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:23:05,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:23:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:05,096 INFO L87 Difference]: Start difference. First operand 694 states and 847 transitions. Second operand has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:05,212 INFO L93 Difference]: Finished difference Result 1453 states and 1781 transitions. [2021-11-07 07:23:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:23:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2021-11-07 07:23:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:05,223 INFO L225 Difference]: With dead ends: 1453 [2021-11-07 07:23:05,223 INFO L226 Difference]: Without dead ends: 1306 [2021-11-07 07:23:05,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-07 07:23:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 876. [2021-11-07 07:23:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.228735632183908) internal successors, (1069), 875 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1069 transitions. [2021-11-07 07:23:05,266 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1069 transitions. Word has length 343 [2021-11-07 07:23:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:05,267 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1069 transitions. [2021-11-07 07:23:05,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1069 transitions. [2021-11-07 07:23:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-07 07:23:05,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:05,279 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:05,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:05,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:05,508 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash 461433435, now seen corresponding path program 2 times [2021-11-07 07:23:05,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:05,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5752815] [2021-11-07 07:23:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:05,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:05,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:05,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297237259] [2021-11-07 07:23:05,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:05,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:05,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:05,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:23:06,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:06,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:06,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:23:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:08,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5752815] [2021-11-07 07:23:08,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297237259] [2021-11-07 07:23:08,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297237259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:08,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:08,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-07 07:23:08,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320280074] [2021-11-07 07:23:08,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:23:08,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:23:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:23:08,153 INFO L87 Difference]: Start difference. First operand 876 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:08,303 INFO L93 Difference]: Finished difference Result 1781 states and 2182 transitions. [2021-11-07 07:23:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:23:08,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2021-11-07 07:23:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:08,316 INFO L225 Difference]: With dead ends: 1781 [2021-11-07 07:23:08,316 INFO L226 Difference]: Without dead ends: 1634 [2021-11-07 07:23:08,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:23:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-11-07 07:23:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1058. [2021-11-07 07:23:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1052 states have (on average 1.2271863117870723) internal successors, (1291), 1057 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1291 transitions. [2021-11-07 07:23:08,366 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1291 transitions. Word has length 441 [2021-11-07 07:23:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:08,367 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1291 transitions. [2021-11-07 07:23:08,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1291 transitions. [2021-11-07 07:23:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-07 07:23:08,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:08,374 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:08,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-07 07:23:08,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:23:08,588 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 511535730, now seen corresponding path program 3 times [2021-11-07 07:23:08,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:08,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823025072] [2021-11-07 07:23:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:08,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:08,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:08,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633398606] [2021-11-07 07:23:08,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:08,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:08,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:23:09,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:09,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:09,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:23:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2021-11-07 07:23:13,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:13,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823025072] [2021-11-07 07:23:13,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:13,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633398606] [2021-11-07 07:23:13,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633398606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:13,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:13,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:23:13,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579156553] [2021-11-07 07:23:13,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:23:13,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:23:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:13,094 INFO L87 Difference]: Start difference. First operand 1058 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:13,177 INFO L93 Difference]: Finished difference Result 2058 states and 2516 transitions. [2021-11-07 07:23:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:23:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2021-11-07 07:23:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:13,186 INFO L225 Difference]: With dead ends: 2058 [2021-11-07 07:23:13,186 INFO L226 Difference]: Without dead ends: 1056 [2021-11-07 07:23:13,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-07 07:23:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2021-11-07 07:23:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1050 states have (on average 1.2266666666666666) internal successors, (1288), 1055 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1288 transitions. [2021-11-07 07:23:13,229 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1288 transitions. Word has length 539 [2021-11-07 07:23:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:13,230 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1288 transitions. [2021-11-07 07:23:13,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1288 transitions. [2021-11-07 07:23:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-11-07 07:23:13,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:13,237 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:13,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:13,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:13,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1357586562, now seen corresponding path program 1 times [2021-11-07 07:23:13,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:13,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002213518] [2021-11-07 07:23:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:13,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:13,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:13,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374510551] [2021-11-07 07:23:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:13,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:13,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:13,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:23:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:23:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:16,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:16,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002213518] [2021-11-07 07:23:16,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:16,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374510551] [2021-11-07 07:23:16,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374510551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:16,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:16,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-07 07:23:16,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587789734] [2021-11-07 07:23:16,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:23:16,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:23:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:23:16,942 INFO L87 Difference]: Start difference. First operand 1056 states and 1288 transitions. Second operand has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:17,112 INFO L93 Difference]: Finished difference Result 1961 states and 2401 transitions. [2021-11-07 07:23:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:23:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2021-11-07 07:23:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:17,125 INFO L225 Difference]: With dead ends: 1961 [2021-11-07 07:23:17,126 INFO L226 Difference]: Without dead ends: 1814 [2021-11-07 07:23:17,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:23:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-11-07 07:23:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1238. [2021-11-07 07:23:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1232 states have (on average 1.2256493506493507) internal successors, (1510), 1237 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1510 transitions. [2021-11-07 07:23:17,221 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1510 transitions. Word has length 546 [2021-11-07 07:23:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:17,223 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1510 transitions. [2021-11-07 07:23:17,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1510 transitions. [2021-11-07 07:23:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2021-11-07 07:23:17,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:17,231 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:17,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:17,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:23:17,449 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 529047257, now seen corresponding path program 2 times [2021-11-07 07:23:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:17,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498183761] [2021-11-07 07:23:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:17,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:17,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769090420] [2021-11-07 07:23:17,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:17,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:17,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:17,516 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:17,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:23:19,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:19,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:19,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:23:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 1456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:21,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:21,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498183761] [2021-11-07 07:23:21,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:21,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769090420] [2021-11-07 07:23:21,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769090420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:21,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:21,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-07 07:23:21,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539301009] [2021-11-07 07:23:21,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:23:21,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:21,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:23:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:23:21,398 INFO L87 Difference]: Start difference. First operand 1238 states and 1510 transitions. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:21,579 INFO L93 Difference]: Finished difference Result 2289 states and 2802 transitions. [2021-11-07 07:23:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:23:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 644 [2021-11-07 07:23:21,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:21,593 INFO L225 Difference]: With dead ends: 2289 [2021-11-07 07:23:21,593 INFO L226 Difference]: Without dead ends: 2142 [2021-11-07 07:23:21,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:23:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-07 07:23:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1420. [2021-11-07 07:23:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1414 states have (on average 1.224893917963225) internal successors, (1732), 1419 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1732 transitions. [2021-11-07 07:23:21,665 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1732 transitions. Word has length 644 [2021-11-07 07:23:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:21,666 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1732 transitions. [2021-11-07 07:23:21,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1732 transitions. [2021-11-07 07:23:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2021-11-07 07:23:21,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:21,676 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:21,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:21,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:23:21,900 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1214279824, now seen corresponding path program 3 times [2021-11-07 07:23:21,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:21,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072665787] [2021-11-07 07:23:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:21,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:21,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:21,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458256556] [2021-11-07 07:23:21,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:21,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:21,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:21,965 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:21,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:23:23,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:23:23,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:23,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:23:23,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2021-11-07 07:23:25,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072665787] [2021-11-07 07:23:25,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458256556] [2021-11-07 07:23:25,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458256556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:25,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:25,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:23:25,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637052590] [2021-11-07 07:23:25,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:23:25,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:23:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:25,515 INFO L87 Difference]: Start difference. First operand 1420 states and 1732 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:25,660 INFO L93 Difference]: Finished difference Result 3291 states and 4014 transitions. [2021-11-07 07:23:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:23:25,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 742 [2021-11-07 07:23:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:25,676 INFO L225 Difference]: With dead ends: 3291 [2021-11-07 07:23:25,676 INFO L226 Difference]: Without dead ends: 2369 [2021-11-07 07:23:25,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:23:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-07 07:23:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2357. [2021-11-07 07:23:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2351 states have (on average 1.2216078264568269) internal successors, (2872), 2356 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:25,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2872 transitions. [2021-11-07 07:23:25,774 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2872 transitions. Word has length 742 [2021-11-07 07:23:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:25,776 INFO L470 AbstractCegarLoop]: Abstraction has 2357 states and 2872 transitions. [2021-11-07 07:23:25,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2872 transitions. [2021-11-07 07:23:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-07 07:23:25,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:25,788 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:25,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:26,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:23:26,012 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1205050408, now seen corresponding path program 1 times [2021-11-07 07:23:26,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:26,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173294000] [2021-11-07 07:23:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:26,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:26,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:26,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510029415] [2021-11-07 07:23:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:26,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:26,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:26,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:23:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:28,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:23:28,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 0 proven. 2041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:30,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:30,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173294000] [2021-11-07 07:23:30,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:30,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510029415] [2021-11-07 07:23:30,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510029415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:30,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:30,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-07 07:23:30,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719717729] [2021-11-07 07:23:30,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:23:30,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:23:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:23:30,573 INFO L87 Difference]: Start difference. First operand 2357 states and 2872 transitions. Second operand has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:30,833 INFO L93 Difference]: Finished difference Result 3793 states and 4625 transitions. [2021-11-07 07:23:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:23:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 749 [2021-11-07 07:23:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:30,864 INFO L225 Difference]: With dead ends: 3793 [2021-11-07 07:23:30,865 INFO L226 Difference]: Without dead ends: 3602 [2021-11-07 07:23:30,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:23:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-07 07:23:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 2710. [2021-11-07 07:23:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2704 states have (on average 1.2211538461538463) internal successors, (3302), 2709 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3302 transitions. [2021-11-07 07:23:31,005 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3302 transitions. Word has length 749 [2021-11-07 07:23:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:31,006 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3302 transitions. [2021-11-07 07:23:31,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3302 transitions. [2021-11-07 07:23:31,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2021-11-07 07:23:31,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:31,024 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:31,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:31,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:23:31,245 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash -582549215, now seen corresponding path program 2 times [2021-11-07 07:23:31,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:31,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13109363] [2021-11-07 07:23:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:31,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:31,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:31,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291935897] [2021-11-07 07:23:31,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:31,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:31,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:31,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:31,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:23:33,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:33,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:33,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:23:33,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 0 proven. 2724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:36,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:36,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13109363] [2021-11-07 07:23:36,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:36,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291935897] [2021-11-07 07:23:36,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291935897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:36,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:36,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-07 07:23:36,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071542924] [2021-11-07 07:23:36,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:23:36,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:23:36,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:23:36,603 INFO L87 Difference]: Start difference. First operand 2710 states and 3302 transitions. Second operand has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:36,874 INFO L93 Difference]: Finished difference Result 4292 states and 5233 transitions. [2021-11-07 07:23:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:23:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 847 [2021-11-07 07:23:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:36,906 INFO L225 Difference]: With dead ends: 4292 [2021-11-07 07:23:36,906 INFO L226 Difference]: Without dead ends: 4101 [2021-11-07 07:23:36,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:23:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-11-07 07:23:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3063. [2021-11-07 07:23:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3057 states have (on average 1.2208047105004907) internal successors, (3732), 3062 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3732 transitions. [2021-11-07 07:23:37,048 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3732 transitions. Word has length 847 [2021-11-07 07:23:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:37,049 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 3732 transitions. [2021-11-07 07:23:37,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3732 transitions. [2021-11-07 07:23:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2021-11-07 07:23:37,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:37,067 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:37,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:37,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:37,292 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:23:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1663845418, now seen corresponding path program 3 times [2021-11-07 07:23:37,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:37,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8940840] [2021-11-07 07:23:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:37,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:37,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:37,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536482481] [2021-11-07 07:23:37,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:37,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:37,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:37,390 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:37,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a347f32f-0707-4457-bf93-090af017b526/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process