./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0 --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:09:08,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:09:08,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:09:08,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:09:08,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:09:08,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:09:08,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:09:08,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:09:08,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:09:08,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:09:08,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:09:08,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:09:08,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:09:08,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:09:08,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:09:08,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:09:08,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:09:08,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:09:08,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:09:08,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:09:08,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:09:08,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:09:08,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:09:08,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:09:08,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:09:08,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:09:08,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:09:08,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:09:08,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:09:08,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:09:08,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:09:08,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:09:08,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:09:08,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:09:08,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:09:08,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:09:08,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:09:08,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:09:08,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:09:08,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:09:08,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:09:08,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:09:08,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:09:08,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:09:08,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:09:08,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:09:08,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:09:08,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:09:08,586 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:09:08,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:09:08,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:09:08,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:09:08,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:09:08,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:09:08,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:09:08,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:09:08,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:09:08,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:09:08,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:09:08,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:09:08,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:09:08,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:09:08,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:09:08,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:09:08,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:09:08,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:09:08,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:09:08,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:09:08,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:09:08,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:09:08,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:09:08,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:09:08,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:09:08,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:09:08,594 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_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-22 15:09:08,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:09:08,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:09:08,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:09:08,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:09:08,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:09:08,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-22 15:09:09,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/data/d38cd1caa/ca6d556f143148ef91e29e081f2f2048/FLAG759ea79c7 [2021-11-22 15:09:09,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:09:09,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-22 15:09:09,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/data/d38cd1caa/ca6d556f143148ef91e29e081f2f2048/FLAG759ea79c7 [2021-11-22 15:09:09,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/data/d38cd1caa/ca6d556f143148ef91e29e081f2f2048 [2021-11-22 15:09:09,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:09:09,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:09:09,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:09:09,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:09:09,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:09:09,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:09" (1/1) ... [2021-11-22 15:09:09,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5eefd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:09, skipping insertion in model container [2021-11-22 15:09:09,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:09" (1/1) ... [2021-11-22 15:09:09,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:09:09,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:09:10,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-22 15:09:10,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:09:10,395 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:09:10,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-22 15:09:10,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:09:10,556 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:09:10,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10 WrapperNode [2021-11-22 15:09:10,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:09:10,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:09:10,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:09:10,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:09:10,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,687 INFO L137 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 666 [2021-11-22 15:09:10,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:09:10,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:09:10,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:09:10,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:09:10,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:09:10,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:09:10,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:09:10,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:09:10,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (1/1) ... [2021-11-22 15:09:10,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:09:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:10,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:09:10,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:09:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:09:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:09:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:09:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:09:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:09:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:09:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:09:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:09:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:09:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:09:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:09:11,207 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:09:11,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:09:11,960 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:09:11,978 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:09:11,978 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-22 15:09:11,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:09:11 BoogieIcfgContainer [2021-11-22 15:09:11,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:09:11,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:09:11,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:09:11,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:09:11,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:09:09" (1/3) ... [2021-11-22 15:09:11,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d3cfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:09:11, skipping insertion in model container [2021-11-22 15:09:11,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:10" (2/3) ... [2021-11-22 15:09:11,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d3cfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:09:11, skipping insertion in model container [2021-11-22 15:09:11,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:09:11" (3/3) ... [2021-11-22 15:09:11,990 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-22 15:09:11,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:09:11,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-22 15:09:12,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:09:12,086 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 [2021-11-22 15:09:12,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-22 15:09:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 137 states have (on average 1.686131386861314) internal successors, (231), 147 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:09:12,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:12,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:12,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-22 15:09:12,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:12,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808444372] [2021-11-22 15:09:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:12,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:12,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:12,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808444372] [2021-11-22 15:09:12,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808444372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:12,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:12,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:09:12,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605690283] [2021-11-22 15:09:12,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:09:12,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:09:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:09:12,339 INFO L87 Difference]: Start difference. First operand has 148 states, 137 states have (on average 1.686131386861314) internal successors, (231), 147 states have internal predecessors, (231), 0 states have call successors, (0), 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) [2021-11-22 15:09:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:12,373 INFO L93 Difference]: Finished difference Result 294 states and 460 transitions. [2021-11-22 15:09:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:09:12,375 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 [2021-11-22 15:09:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:12,386 INFO L225 Difference]: With dead ends: 294 [2021-11-22 15:09:12,386 INFO L226 Difference]: Without dead ends: 144 [2021-11-22 15:09:12,389 INFO L932 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 [2021-11-22 15:09:12,393 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:12,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-22 15:09:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-11-22 15:09:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 143 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 182 transitions. [2021-11-22 15:09:12,440 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 182 transitions. Word has length 8 [2021-11-22 15:09:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:12,441 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 182 transitions. [2021-11-22 15:09:12,441 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) [2021-11-22 15:09:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 182 transitions. [2021-11-22 15:09:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:09:12,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:12,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:12,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:09:12,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-22 15:09:12,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:12,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144000628] [2021-11-22 15:09:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:12,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:12,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144000628] [2021-11-22 15:09:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144000628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:12,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:12,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:12,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082280405] [2021-11-22 15:09:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:12,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:12,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:12,497 INFO L87 Difference]: Start difference. First operand 144 states and 182 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-22 15:09:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:12,537 INFO L93 Difference]: Finished difference Result 286 states and 362 transitions. [2021-11-22 15:09:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2021-11-22 15:09:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:12,541 INFO L225 Difference]: With dead ends: 286 [2021-11-22 15:09:12,541 INFO L226 Difference]: Without dead ends: 231 [2021-11-22 15:09:12,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:12,544 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 113 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:12,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-22 15:09:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 145. [2021-11-22 15:09:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 135 states have (on average 1.3555555555555556) internal successors, (183), 144 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2021-11-22 15:09:12,578 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 8 [2021-11-22 15:09:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:12,579 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2021-11-22 15:09:12,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-22 15:09:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2021-11-22 15:09:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:09:12,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:12,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:12,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:09:12,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-22 15:09:12,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755188371] [2021-11-22 15:09:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:12,629 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:12,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574146775] [2021-11-22 15:09:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:12,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:12,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:12,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:09:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:12,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:09:12,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:12,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:09:12,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:12,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755188371] [2021-11-22 15:09:12,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:09:12,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574146775] [2021-11-22 15:09:12,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574146775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:12,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:12,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:12,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211294302] [2021-11-22 15:09:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:12,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:12,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:12,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:12,943 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:13,024 INFO L93 Difference]: Finished difference Result 308 states and 394 transitions. [2021-11-22 15:09:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-22 15:09:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:13,027 INFO L225 Difference]: With dead ends: 308 [2021-11-22 15:09:13,027 INFO L226 Difference]: Without dead ends: 166 [2021-11-22 15:09:13,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:13,029 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 9 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:13,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 309 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-22 15:09:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2021-11-22 15:09:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 155 states have (on average 1.3096774193548386) internal successors, (203), 164 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-11-22 15:09:13,042 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 59 [2021-11-22 15:09:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:13,043 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-11-22 15:09:13,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-11-22 15:09:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:09:13,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:13,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:13,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:13,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:13,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:13,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-22 15:09:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:13,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841153958] [2021-11-22 15:09:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:13,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:13,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:13,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625049223] [2021-11-22 15:09:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:13,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:13,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:13,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:13,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:09:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:13,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:09:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:13,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:09:13,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:13,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841153958] [2021-11-22 15:09:13,602 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:09:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625049223] [2021-11-22 15:09:13,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625049223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:13,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:13,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:09:13,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556229368] [2021-11-22 15:09:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:13,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:09:13,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:09:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:09:13,612 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:13,704 INFO L93 Difference]: Finished difference Result 319 states and 395 transitions. [2021-11-22 15:09:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:09:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-22 15:09:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:13,709 INFO L225 Difference]: With dead ends: 319 [2021-11-22 15:09:13,709 INFO L226 Difference]: Without dead ends: 157 [2021-11-22 15:09:13,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:13,716 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 170 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:13,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 317 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-22 15:09:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2021-11-22 15:09:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 141 states have (on average 1.2907801418439717) internal successors, (182), 150 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2021-11-22 15:09:13,747 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 59 [2021-11-22 15:09:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:13,747 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2021-11-22 15:09:13,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2021-11-22 15:09:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:09:13,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:13,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:13,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:13,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:13,968 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-22 15:09:13,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:13,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655966361] [2021-11-22 15:09:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:13,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:13,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:13,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429456548] [2021-11-22 15:09:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:14,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:14,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:14,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:14,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:09:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:14,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:09:14,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:14,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:14,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655966361] [2021-11-22 15:09:14,454 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:09:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429456548] [2021-11-22 15:09:14,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429456548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:09:14,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:09:14,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-22 15:09:14,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023768528] [2021-11-22 15:09:14,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:09:14,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:09:14,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:09:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:09:14,457 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:14,510 INFO L93 Difference]: Finished difference Result 485 states and 589 transitions. [2021-11-22 15:09:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:09:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 59 [2021-11-22 15:09:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:14,514 INFO L225 Difference]: With dead ends: 485 [2021-11-22 15:09:14,514 INFO L226 Difference]: Without dead ends: 430 [2021-11-22 15:09:14,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:09:14,516 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 692 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:14,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 616 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-22 15:09:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-11-22 15:09:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.2404761904761905) internal successors, (521), 429 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 521 transitions. [2021-11-22 15:09:14,546 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 521 transitions. Word has length 59 [2021-11-22 15:09:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:14,548 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 521 transitions. [2021-11-22 15:09:14,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 521 transitions. [2021-11-22 15:09:14,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-22 15:09:14,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:14,563 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:14,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:14,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:14,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash 292771206, now seen corresponding path program 2 times [2021-11-22 15:09:14,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:14,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877405394] [2021-11-22 15:09:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:14,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:14,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:14,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435809643] [2021-11-22 15:09:14,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:09:14,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:14,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:14,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:09:14,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 15:09:14,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:09:14,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:09:14,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-22 15:09:16,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:09:16,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:16,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877405394] [2021-11-22 15:09:16,010 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:09:16,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435809643] [2021-11-22 15:09:16,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435809643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:16,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:09:16,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853223637] [2021-11-22 15:09:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:16,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:09:16,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:09:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:09:16,016 INFO L87 Difference]: Start difference. First operand 430 states and 521 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:16,256 INFO L93 Difference]: Finished difference Result 802 states and 976 transitions. [2021-11-22 15:09:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 212 [2021-11-22 15:09:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:16,259 INFO L225 Difference]: With dead ends: 802 [2021-11-22 15:09:16,259 INFO L226 Difference]: Without dead ends: 428 [2021-11-22 15:09:16,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:09:16,261 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 19 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:16,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 473 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:09:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-22 15:09:16,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-11-22 15:09:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 418 states have (on average 1.2392344497607655) internal successors, (518), 427 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 518 transitions. [2021-11-22 15:09:16,277 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 518 transitions. Word has length 212 [2021-11-22 15:09:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:16,278 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 518 transitions. [2021-11-22 15:09:16,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 518 transitions. [2021-11-22 15:09:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-22 15:09:16,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:16,282 INFO L514 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:16,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:16,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:16,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 1 times [2021-11-22 15:09:16,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108592322] [2021-11-22 15:09:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:16,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:16,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:16,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998250484] [2021-11-22 15:09:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:16,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:16,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:16,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:16,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:09:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:09:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:17,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:17,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:17,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108592322] [2021-11-22 15:09:17,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:09:17,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998250484] [2021-11-22 15:09:17,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998250484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:09:17,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:09:17,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-22 15:09:17,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414638885] [2021-11-22 15:09:17,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:09:17,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:09:17,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:09:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:09:17,749 INFO L87 Difference]: Start difference. First operand 428 states and 518 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:17,896 INFO L93 Difference]: Finished difference Result 1041 states and 1267 transitions. [2021-11-22 15:09:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:09:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 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 219 [2021-11-22 15:09:17,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:17,906 INFO L225 Difference]: With dead ends: 1041 [2021-11-22 15:09:17,906 INFO L226 Difference]: Without dead ends: 986 [2021-11-22 15:09:17,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:09:17,908 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1451 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:17,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1372 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-22 15:09:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2021-11-22 15:09:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 976 states have (on average 1.2254098360655739) internal successors, (1196), 985 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1196 transitions. [2021-11-22 15:09:17,959 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1196 transitions. Word has length 219 [2021-11-22 15:09:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:17,961 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1196 transitions. [2021-11-22 15:09:17,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:09:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1196 transitions. [2021-11-22 15:09:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-22 15:09:17,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:17,976 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:18,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:18,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 15:09:18,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:09:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1985764010, now seen corresponding path program 2 times [2021-11-22 15:09:18,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147977289] [2021-11-22 15:09:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:18,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:18,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:09:18,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589708177] [2021-11-22 15:09:18,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:09:18,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:18,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:18,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:16:44,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:16:44,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:16:44,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:16:44,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:16:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-22 15:16:45,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:16:45,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:16:45,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147977289] [2021-11-22 15:16:45,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:16:45,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589708177] [2021-11-22 15:16:45,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589708177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:16:45,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:16:45,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:16:45,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803714513] [2021-11-22 15:16:45,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:16:45,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:16:45,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:16:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:16:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:16:45,392 INFO L87 Difference]: Start difference. First operand 986 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:45,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:16:45,435 INFO L93 Difference]: Finished difference Result 1932 states and 2356 transitions. [2021-11-22 15:16:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:16:45,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 525 [2021-11-22 15:16:45,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:16:45,441 INFO L225 Difference]: With dead ends: 1932 [2021-11-22 15:16:45,442 INFO L226 Difference]: Without dead ends: 996 [2021-11-22 15:16:45,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:16:45,444 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:16:45,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:16:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-22 15:16:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2021-11-22 15:16:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 986 states have (on average 1.2231237322515214) internal successors, (1206), 995 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1206 transitions. [2021-11-22 15:16:45,475 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1206 transitions. Word has length 525 [2021-11-22 15:16:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:16:45,475 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1206 transitions. [2021-11-22 15:16:45,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1206 transitions. [2021-11-22 15:16:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2021-11-22 15:16:45,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:16:45,489 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:16:45,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:16:45,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 15:16:45,717 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:16:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:16:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1022272148, now seen corresponding path program 1 times [2021-11-22 15:16:45,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:16:45,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557859096] [2021-11-22 15:16:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:16:45,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:16:45,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:16:45,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836803613] [2021-11-22 15:16:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:16:45,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:16:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:16:45,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:16:45,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:18:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:18:04,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:18:04,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:18:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-22 15:18:05,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:18:05,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:18:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557859096] [2021-11-22 15:18:05,206 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:18:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836803613] [2021-11-22 15:18:05,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836803613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:18:05,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:18:05,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:18:05,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256312199] [2021-11-22 15:18:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:18:05,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:18:05,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:18:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:18:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:18:05,208 INFO L87 Difference]: Start difference. First operand 996 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:18:05,253 INFO L93 Difference]: Finished difference Result 1948 states and 2371 transitions. [2021-11-22 15:18:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:18:05,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 526 [2021-11-22 15:18:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:18:05,259 INFO L225 Difference]: With dead ends: 1948 [2021-11-22 15:18:05,259 INFO L226 Difference]: Without dead ends: 1006 [2021-11-22 15:18:05,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:18:05,264 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:18:05,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:18:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-22 15:18:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1006. [2021-11-22 15:18:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 996 states have (on average 1.2208835341365463) internal successors, (1216), 1005 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1216 transitions. [2021-11-22 15:18:05,295 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1216 transitions. Word has length 526 [2021-11-22 15:18:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:18:05,296 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1216 transitions. [2021-11-22 15:18:05,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1216 transitions. [2021-11-22 15:18:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2021-11-22 15:18:05,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:18:05,311 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:18:05,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:18:05,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:18:05,511 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:18:05,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:18:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1577277749, now seen corresponding path program 1 times [2021-11-22 15:18:05,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:18:05,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199953458] [2021-11-22 15:18:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:18:05,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:18:05,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:18:05,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262449826] [2021-11-22 15:18:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:18:05,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:18:05,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:18:05,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:18:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:20:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:37,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:20:37,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-22 15:20:38,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2289 backedges. 325 proven. 1 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2021-11-22 15:20:39,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:39,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199953458] [2021-11-22 15:20:39,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:20:39,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262449826] [2021-11-22 15:20:39,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262449826] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:20:39,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:20:39,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-11-22 15:20:39,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384085424] [2021-11-22 15:20:39,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:20:39,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:20:39,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:20:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:39,213 INFO L87 Difference]: Start difference. First operand 1006 states and 1216 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:39,379 INFO L93 Difference]: Finished difference Result 2858 states and 3494 transitions. [2021-11-22 15:20:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:20:39,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 527 [2021-11-22 15:20:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:39,393 INFO L225 Difference]: With dead ends: 2858 [2021-11-22 15:20:39,394 INFO L226 Difference]: Without dead ends: 1903 [2021-11-22 15:20:39,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:20:39,397 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 161 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:39,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1361 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-11-22 15:20:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1046. [2021-11-22 15:20:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1036 states have (on average 1.2123552123552124) internal successors, (1256), 1045 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1256 transitions. [2021-11-22 15:20:39,452 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1256 transitions. Word has length 527 [2021-11-22 15:20:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:39,453 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1256 transitions. [2021-11-22 15:20:39,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1256 transitions. [2021-11-22 15:20:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-11-22 15:20:39,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:39,460 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:39,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:39,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:20:39,681 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:20:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1316590250, now seen corresponding path program 2 times [2021-11-22 15:20:39,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:39,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422583277] [2021-11-22 15:20:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:39,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:39,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:20:39,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896356901] [2021-11-22 15:20:39,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:20:39,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:20:39,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:20:39,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:20:39,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:21:32,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:21:32,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:21:33,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 15:21:33,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 3 refuted. 0 times theorem prover too weak. 1972 trivial. 0 not checked. [2021-11-22 15:21:33,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 325 proven. 13 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2021-11-22 15:21:34,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:21:34,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422583277] [2021-11-22 15:21:34,975 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:21:34,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896356901] [2021-11-22 15:21:34,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896356901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:21:34,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:21:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2021-11-22 15:21:34,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609036901] [2021-11-22 15:21:34,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:21:34,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:21:34,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:21:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:21:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:21:34,980 INFO L87 Difference]: Start difference. First operand 1046 states and 1256 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:35,988 INFO L93 Difference]: Finished difference Result 2944 states and 3606 transitions. [2021-11-22 15:21:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:21:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 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 531 [2021-11-22 15:21:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:36,000 INFO L225 Difference]: With dead ends: 2944 [2021-11-22 15:21:36,001 INFO L226 Difference]: Without dead ends: 1906 [2021-11-22 15:21:36,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:21:36,006 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 545 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:36,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1988 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:21:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-11-22 15:21:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1086. [2021-11-22 15:21:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1076 states have (on average 1.204460966542751) internal successors, (1296), 1085 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1296 transitions. [2021-11-22 15:21:36,074 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1296 transitions. Word has length 531 [2021-11-22 15:21:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:36,074 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1296 transitions. [2021-11-22 15:21:36,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1296 transitions. [2021-11-22 15:21:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-22 15:21:36,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:36,080 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:36,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:36,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:21:36,295 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 15:21:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 906535638, now seen corresponding path program 3 times [2021-11-22 15:21:36,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:21:36,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985477063] [2021-11-22 15:21:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:36,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:21:36,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:21:36,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458546902] [2021-11-22 15:21:36,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:21:36,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:21:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:21:36,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:21:36,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82bf31e3-131a-4e93-94ac-3cc3a733cf6a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process