./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa --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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:24:32,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:24:32,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:24:32,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:24:32,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:24:32,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:24:32,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:24:32,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:24:32,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:24:32,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:24:32,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:24:32,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:24:32,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:24:32,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:24:32,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:24:32,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:24:32,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:24:32,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:24:32,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:24:32,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:24:32,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:24:32,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:24:32,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:24:32,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:24:32,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:24:32,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:24:32,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:24:32,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:24:32,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:24:32,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:24:32,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:24:32,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:24:32,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:24:32,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:24:32,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:24:32,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:24:32,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:24:32,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:24:32,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:24:32,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:24:32,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:24:32,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:24:32,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:24:32,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:24:32,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:24:32,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:24:32,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:24:32,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:24:32,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:24:32,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:24:32,550 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:24:32,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:24:32,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:24:32,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:24:32,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:24:32,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:24:32,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:24:32,554 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_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-12-06 20:24:32,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:24:32,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:24:32,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:24:32,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:24:32,741 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:24:32,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-06 20:24:32,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/data/838a55a9c/e273ba585a8e403a9aa0cab9c07d99f8/FLAG102b03df3 [2021-12-06 20:24:33,261 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:24:33,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-12-06 20:24:33,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/data/838a55a9c/e273ba585a8e403a9aa0cab9c07d99f8/FLAG102b03df3 [2021-12-06 20:24:33,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/data/838a55a9c/e273ba585a8e403a9aa0cab9c07d99f8 [2021-12-06 20:24:33,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:24:33,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:24:33,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:24:33,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:24:33,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:24:33,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68aad29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33, skipping insertion in model container [2021-12-06 20:24:33,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:24:33,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:24:33,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-12-06 20:24:33,634 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_f541cd19-296e-4451-8656-7013753ae5d6/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-12-06 20:24:33,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:24:33,651 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:24:33,674 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_f541cd19-296e-4451-8656-7013753ae5d6/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-12-06 20:24:33,711 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_f541cd19-296e-4451-8656-7013753ae5d6/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-12-06 20:24:33,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:24:33,745 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:24:33,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33 WrapperNode [2021-12-06 20:24:33,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:24:33,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:24:33,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:24:33,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:24:33,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,831 INFO L137 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-12-06 20:24:33,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:24:33,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:24:33,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:24:33,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:24:33,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:24:33,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:24:33,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:24:33,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:24:33,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (1/1) ... [2021-12-06 20:24:33,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:24:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:33,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:24:33,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:24:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 20:24:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:24:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-12-06 20:24:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:24:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:24:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:24:34,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:24:34,149 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:24:34,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:24:34,818 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:24:34,825 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:24:34,825 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-12-06 20:24:34,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:24:34 BoogieIcfgContainer [2021-12-06 20:24:34,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:24:34,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:24:34,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:24:34,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:24:34,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:24:33" (1/3) ... [2021-12-06 20:24:34,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcd5e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:24:34, skipping insertion in model container [2021-12-06 20:24:34,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:33" (2/3) ... [2021-12-06 20:24:34,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcd5e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:24:34, skipping insertion in model container [2021-12-06 20:24:34,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:24:34" (3/3) ... [2021-12-06 20:24:34,833 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2021-12-06 20:24:34,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:24:34,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 20:24:34,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:24:34,887 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 [2021-12-06 20:24:34,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 20:24:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-06 20:24:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 20:24:34,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:34,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:34,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-12-06 20:24:34,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:34,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370403776] [2021-12-06 20:24:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:34,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:24:35,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:35,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370403776] [2021-12-06 20:24:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370403776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:35,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:35,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:24:35,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125970365] [2021-12-06 20:24:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:35,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:24:35,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:24:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:24:35,070 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:35,110 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-12-06 20:24:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:24:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 20:24:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:35,120 INFO L225 Difference]: With dead ends: 508 [2021-12-06 20:24:35,121 INFO L226 Difference]: Without dead ends: 222 [2021-12-06 20:24:35,125 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 [2021-12-06 20:24:35,127 INFO L933 BasicCegarLoop]: 351 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, 351 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 [2021-12-06 20:24:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-06 20:24:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-06 20:24:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-06 20:24:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-12-06 20:24:35,172 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-12-06 20:24:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:35,172 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-12-06 20:24:35,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-12-06 20:24:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 20:24:35,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:35,175 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] [2021-12-06 20:24:35,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:24:35,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:35,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-12-06 20:24:35,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:35,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804194876] [2021-12-06 20:24:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:35,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:24:35,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:35,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804194876] [2021-12-06 20:24:35,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804194876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:35,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:35,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:24:35,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598953468] [2021-12-06 20:24:35,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:35,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:24:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:24:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:24:35,246 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:35,630 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2021-12-06 20:24:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:24:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-12-06 20:24:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:35,634 INFO L225 Difference]: With dead ends: 463 [2021-12-06 20:24:35,635 INFO L226 Difference]: Without dead ends: 338 [2021-12-06 20:24:35,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:24:35,637 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 143 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:35,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 782 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:24:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-12-06 20:24:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2021-12-06 20:24:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 215 states have internal predecessors, (269), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-06 20:24:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2021-12-06 20:24:35,663 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2021-12-06 20:24:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:35,664 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2021-12-06 20:24:35,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2021-12-06 20:24:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:24:35,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:35,667 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, 1, 1] [2021-12-06 20:24:35,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:24:35,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-12-06 20:24:35,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:35,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487871724] [2021-12-06 20:24:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:35,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:35,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:35,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969925327] [2021-12-06 20:24:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:35,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:35,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:35,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:35,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:24:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:36,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:24:36,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:24:36,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:36,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:36,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487871724] [2021-12-06 20:24:36,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:36,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969925327] [2021-12-06 20:24:36,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969925327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:36,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:36,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:24:36,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131879096] [2021-12-06 20:24:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:36,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:24:36,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:24:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:24:36,208 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:36,256 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2021-12-06 20:24:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:24:36,257 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 20:24:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:36,259 INFO L225 Difference]: With dead ends: 465 [2021-12-06 20:24:36,260 INFO L226 Difference]: Without dead ends: 245 [2021-12-06 20:24:36,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:24:36,262 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:36,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 559 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-06 20:24:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-12-06 20:24:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 235 states have internal predecessors, (289), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-06 20:24:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 329 transitions. [2021-12-06 20:24:36,278 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 329 transitions. Word has length 61 [2021-12-06 20:24:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:36,279 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 329 transitions. [2021-12-06 20:24:36,279 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 329 transitions. [2021-12-06 20:24:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:24:36,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:36,281 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, 1, 1] [2021-12-06 20:24:36,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-06 20:24:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:36,484 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1749706579, now seen corresponding path program 1 times [2021-12-06 20:24:36,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:36,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534691673] [2021-12-06 20:24:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:36,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:36,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:36,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867105936] [2021-12-06 20:24:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:36,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:36,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:36,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:24:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:37,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:24:37,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:24:37,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:37,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534691673] [2021-12-06 20:24:37,086 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867105936] [2021-12-06 20:24:37,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867105936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:37,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:37,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:24:37,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980510903] [2021-12-06 20:24:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:37,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:24:37,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:24:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:24:37,088 INFO L87 Difference]: Start difference. First operand 244 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:37,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:37,138 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2021-12-06 20:24:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:24:37,138 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 20:24:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:37,140 INFO L225 Difference]: With dead ends: 476 [2021-12-06 20:24:37,141 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 20:24:37,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:24:37,143 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 213 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:37,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 20:24:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-12-06 20:24:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 221 states have internal predecessors, (268), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-06 20:24:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2021-12-06 20:24:37,155 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 61 [2021-12-06 20:24:37,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:37,155 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2021-12-06 20:24:37,155 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2021-12-06 20:24:37,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:24:37,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:37,157 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, 1, 1] [2021-12-06 20:24:37,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 20:24:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:37,359 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2021-12-06 20:24:37,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:37,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483011367] [2021-12-06 20:24:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:37,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:37,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182082288] [2021-12-06 20:24:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:37,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:37,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:37,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:24:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:37,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:24:37,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:24:37,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:37,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483011367] [2021-12-06 20:24:37,947 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182082288] [2021-12-06 20:24:37,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182082288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:37,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:37,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:24:37,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346566554] [2021-12-06 20:24:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:37,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:24:37,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:24:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:24:37,949 INFO L87 Difference]: Start difference. First operand 230 states and 308 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:38,021 INFO L93 Difference]: Finished difference Result 567 states and 751 transitions. [2021-12-06 20:24:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:24:38,021 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 20:24:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:38,023 INFO L225 Difference]: With dead ends: 567 [2021-12-06 20:24:38,023 INFO L226 Difference]: Without dead ends: 341 [2021-12-06 20:24:38,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:24:38,025 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 98 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:38,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 616 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:24:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-06 20:24:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2021-12-06 20:24:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 328 states have internal predecessors, (401), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 20:24:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 443 transitions. [2021-12-06 20:24:38,037 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 443 transitions. Word has length 61 [2021-12-06 20:24:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:38,037 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 443 transitions. [2021-12-06 20:24:38,038 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:24:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 443 transitions. [2021-12-06 20:24:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 20:24:38,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:38,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:38,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:24:38,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:38,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2021-12-06 20:24:38,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:38,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629707451] [2021-12-06 20:24:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:38,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:38,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:38,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738297580] [2021-12-06 20:24:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:38,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:38,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:38,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:38,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:24:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:38,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:24:38,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:24:38,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:38,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:38,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629707451] [2021-12-06 20:24:38,805 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:38,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738297580] [2021-12-06 20:24:38,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738297580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:38,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:38,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:24:38,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071380629] [2021-12-06 20:24:38,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:38,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:24:38,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:24:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:24:38,807 INFO L87 Difference]: Start difference. First operand 338 states and 443 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:24:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:38,833 INFO L93 Difference]: Finished difference Result 631 states and 839 transitions. [2021-12-06 20:24:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:24:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-12-06 20:24:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:38,836 INFO L225 Difference]: With dead ends: 631 [2021-12-06 20:24:38,836 INFO L226 Difference]: Without dead ends: 341 [2021-12-06 20:24:38,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:24:38,837 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:38,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-06 20:24:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-12-06 20:24:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 314 states have (on average 1.286624203821656) internal successors, (404), 331 states have internal predecessors, (404), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 20:24:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 447 transitions. [2021-12-06 20:24:38,850 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 447 transitions. Word has length 76 [2021-12-06 20:24:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:38,850 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 447 transitions. [2021-12-06 20:24:38,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:24:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 447 transitions. [2021-12-06 20:24:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 20:24:38,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:38,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:38,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:24:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:39,053 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2021-12-06 20:24:39,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:39,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132371845] [2021-12-06 20:24:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:39,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:39,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:39,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661567318] [2021-12-06 20:24:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:39,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:39,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:39,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:39,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:24:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 20:24:39,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:24:39,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:24:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:24:40,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132371845] [2021-12-06 20:24:40,048 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661567318] [2021-12-06 20:24:40,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661567318] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:24:40,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:24:40,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 20:24:40,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098870064] [2021-12-06 20:24:40,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:24:40,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:24:40,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:24:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:24:40,050 INFO L87 Difference]: Start difference. First operand 341 states and 447 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:24:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:40,150 INFO L93 Difference]: Finished difference Result 645 states and 861 transitions. [2021-12-06 20:24:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:24:40,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2021-12-06 20:24:40,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:40,153 INFO L225 Difference]: With dead ends: 645 [2021-12-06 20:24:40,153 INFO L226 Difference]: Without dead ends: 350 [2021-12-06 20:24:40,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:24:40,154 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 27 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:40,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 883 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-06 20:24:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-06 20:24:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2919254658385093) internal successors, (416), 339 states have internal predecessors, (416), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2021-12-06 20:24:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 460 transitions. [2021-12-06 20:24:40,167 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 460 transitions. Word has length 78 [2021-12-06 20:24:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:40,167 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 460 transitions. [2021-12-06 20:24:40,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:24:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 460 transitions. [2021-12-06 20:24:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 20:24:40,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:40,168 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:40,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:24:40,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:40,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash -111872071, now seen corresponding path program 2 times [2021-12-06 20:24:40,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:40,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823130993] [2021-12-06 20:24:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:40,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:40,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:24:40,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403881504] [2021-12-06 20:24:40,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:24:40,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:40,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:40,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:25:29,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:25:29,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:29,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 20:25:29,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:25:29,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:25:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 20:25:30,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:30,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823130993] [2021-12-06 20:25:30,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:25:30,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403881504] [2021-12-06 20:25:30,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403881504] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:25:30,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:25:30,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-06 20:25:30,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230416327] [2021-12-06 20:25:30,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:25:30,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:25:30,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:25:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:25:30,003 INFO L87 Difference]: Start difference. First operand 350 states and 460 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:25:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:30,283 INFO L93 Difference]: Finished difference Result 693 states and 918 transitions. [2021-12-06 20:25:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:25:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2021-12-06 20:25:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:30,285 INFO L225 Difference]: With dead ends: 693 [2021-12-06 20:25:30,286 INFO L226 Difference]: Without dead ends: 350 [2021-12-06 20:25:30,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:25:30,287 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 231 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:30,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1508 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:25:30,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-06 20:25:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2021-12-06 20:25:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 320 states have (on average 1.29375) internal successors, (414), 337 states have internal predecessors, (414), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 20:25:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 457 transitions. [2021-12-06 20:25:30,298 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 457 transitions. Word has length 82 [2021-12-06 20:25:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:30,298 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 457 transitions. [2021-12-06 20:25:30,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:25:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 457 transitions. [2021-12-06 20:25:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 20:25:30,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:30,299 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:30,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:25:30,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 20:25:30,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash -290633159, now seen corresponding path program 3 times [2021-12-06 20:25:30,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:30,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286933975] [2021-12-06 20:25:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:30,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:30,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:25:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292460940] [2021-12-06 20:25:30,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:25:30,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:25:30,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:25:30,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:31:51,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 20:31:51,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:31:51,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:31:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:31:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:31:52,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:31:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:31:52,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:31:52,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286933975] [2021-12-06 20:31:52,220 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:31:52,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292460940] [2021-12-06 20:31:52,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292460940] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:31:52,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:31:52,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-12-06 20:31:52,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560371243] [2021-12-06 20:31:52,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:31:52,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:31:52,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:31:52,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:31:52,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:31:52,221 INFO L87 Difference]: Start difference. First operand 348 states and 457 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:31:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:31:52,756 INFO L93 Difference]: Finished difference Result 667 states and 887 transitions. [2021-12-06 20:31:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:31:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 86 [2021-12-06 20:31:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:31:52,759 INFO L225 Difference]: With dead ends: 667 [2021-12-06 20:31:52,759 INFO L226 Difference]: Without dead ends: 360 [2021-12-06 20:31:52,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:31:52,761 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 275 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:31:52,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 1808 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:31:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-06 20:31:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 354. [2021-12-06 20:31:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 326 states have (on average 1.3006134969325154) internal successors, (424), 343 states have internal predecessors, (424), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 20:31:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 467 transitions. [2021-12-06 20:31:52,773 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 467 transitions. Word has length 86 [2021-12-06 20:31:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:31:52,773 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 467 transitions. [2021-12-06 20:31:52,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:31:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 467 transitions. [2021-12-06 20:31:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 20:31:52,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:31:52,774 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:31:52,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:31:52,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:31:52,975 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:31:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:31:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash -592670023, now seen corresponding path program 4 times [2021-12-06 20:31:52,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:31:52,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560413020] [2021-12-06 20:31:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:31:52,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:31:53,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:31:53,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204360337] [2021-12-06 20:31:53,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:31:53,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:31:53,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:31:53,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:31:53,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:31:53,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:31:53,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:31:53,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 20:31:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:31:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 80 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 20:31:53,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:31:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 20:31:54,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:31:54,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560413020] [2021-12-06 20:31:54,077 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:31:54,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204360337] [2021-12-06 20:31:54,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204360337] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:31:54,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:31:54,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-06 20:31:54,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563923449] [2021-12-06 20:31:54,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:31:54,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 20:31:54,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:31:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 20:31:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:31:54,078 INFO L87 Difference]: Start difference. First operand 354 states and 467 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:31:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:31:56,835 INFO L93 Difference]: Finished difference Result 685 states and 915 transitions. [2021-12-06 20:31:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 20:31:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2021-12-06 20:31:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:31:56,838 INFO L225 Difference]: With dead ends: 685 [2021-12-06 20:31:56,838 INFO L226 Difference]: Without dead ends: 370 [2021-12-06 20:31:56,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=369, Invalid=687, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:31:56,840 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 74 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:31:56,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 2634 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:31:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-06 20:31:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 362. [2021-12-06 20:31:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 334 states have (on average 1.2904191616766467) internal successors, (431), 351 states have internal predecessors, (431), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-12-06 20:31:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 474 transitions. [2021-12-06 20:31:56,851 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 474 transitions. Word has length 92 [2021-12-06 20:31:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:31:56,851 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 474 transitions. [2021-12-06 20:31:56,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:31:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 474 transitions. [2021-12-06 20:31:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 20:31:56,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:31:56,852 INFO L514 BasicCegarLoop]: trace histogram [24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:31:56,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:31:57,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:31:57,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:31:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:31:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1464485959, now seen corresponding path program 5 times [2021-12-06 20:31:57,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:31:57,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667754126] [2021-12-06 20:31:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:31:57,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:31:57,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:31:57,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329484000] [2021-12-06 20:31:57,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:31:57,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:31:57,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:31:57,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:31:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f541cd19-296e-4451-8656-7013753ae5d6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process