./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX --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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:45:31,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:45:31,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:45:31,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:45:31,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:45:31,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:45:31,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:45:31,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:45:31,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:45:31,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:45:31,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:45:31,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:45:31,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:45:31,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:45:31,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:45:31,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:45:31,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:45:31,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:45:31,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:45:31,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:45:31,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:45:31,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:45:31,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:45:31,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:45:31,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:45:31,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:45:31,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:45:31,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:45:31,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:45:31,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:45:31,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:45:31,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:45:31,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:45:31,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:45:31,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:45:31,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:45:31,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:45:31,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:45:31,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:45:31,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:45:31,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:45:31,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:45:31,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:45:31,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:45:31,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:45:31,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:45:31,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:45:31,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:45:31,449 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:45:31,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:45:31,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:45:31,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:45:31,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:45:31,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:45:31,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:45:31,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:45:31,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:45:31,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:45:31,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:45:31,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:45:31,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:45:31,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:45:31,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:45:31,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:45:31,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:31,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:45:31,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:45:31,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:45:31,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:45:31,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:45:31,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:45:31,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:45:31,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:45:31,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:45:31,459 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_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-09 10:45:31,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:45:31,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:45:31,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:45:31,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:45:31,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:45:31,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-09 10:45:31,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/data/e037098b7/0edd51fe75dd49a2888b3a8ff1c1367b/FLAG410eec78f [2021-11-09 10:45:32,451 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:45:32,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-09 10:45:32,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/data/e037098b7/0edd51fe75dd49a2888b3a8ff1c1367b/FLAG410eec78f [2021-11-09 10:45:32,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/data/e037098b7/0edd51fe75dd49a2888b3a8ff1c1367b [2021-11-09 10:45:32,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:45:32,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:45:32,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:32,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:45:32,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:45:32,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:32" (1/1) ... [2021-11-09 10:45:32,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7953e9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:32, skipping insertion in model container [2021-11-09 10:45:32,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:32" (1/1) ... [2021-11-09 10:45:32,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:45:32,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:33,184 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-09 10:45:33,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:33,271 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:45:33,302 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-09 10:45:33,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:33,393 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:45:33,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33 WrapperNode [2021-11-09 10:45:33,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:33,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:45:33,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:45:33,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:45:33,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:45:33,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:45:33,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:45:33,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:45:33,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:45:33,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:45:33,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:45:33,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:45:33,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:33,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:33,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:45:33,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:45:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:45:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:45:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:45:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:45:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:45:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:45:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:45:34,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:45:34,782 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 10:45:34,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:34 BoogieIcfgContainer [2021-11-09 10:45:34,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:45:34,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:45:34,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:45:34,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:45:34,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:45:32" (1/3) ... [2021-11-09 10:45:34,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:34, skipping insertion in model container [2021-11-09 10:45:34,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33" (2/3) ... [2021-11-09 10:45:34,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1b4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:34, skipping insertion in model container [2021-11-09 10:45:34,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:34" (3/3) ... [2021-11-09 10:45:34,793 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2021-11-09 10:45:34,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:45:34,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-09 10:45:34,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:45:34,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:45:34,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-09 10:45:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:45:34,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:34,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:34,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-09 10:45:34,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:34,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427537446] [2021-11-09 10:45:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:34,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:35,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:35,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427537446] [2021-11-09 10:45:35,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427537446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:35,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:35,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:45:35,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951793750] [2021-11-09 10:45:35,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:45:35,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:45:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:35,074 INFO L87 Difference]: Start difference. First operand has 138 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 137 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:35,104 INFO L93 Difference]: Finished difference Result 274 states and 440 transitions. [2021-11-09 10:45:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:45:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-09 10:45:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:35,118 INFO L225 Difference]: With dead ends: 274 [2021-11-09 10:45:35,118 INFO L226 Difference]: Without dead ends: 134 [2021-11-09 10:45:35,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:45:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-09 10:45:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-09 10:45:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-09 10:45:35,189 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-09 10:45:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:35,190 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-09 10:45:35,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-09 10:45:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:45:35,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:35,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:35,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:45:35,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-09 10:45:35,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:35,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688034846] [2021-11-09 10:45:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:35,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:35,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:35,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688034846] [2021-11-09 10:45:35,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688034846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:35,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:35,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:35,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348092049] [2021-11-09 10:45:35,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:35,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:35,273 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:35,308 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-09 10:45:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-09 10:45:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:35,312 INFO L225 Difference]: With dead ends: 266 [2021-11-09 10:45:35,312 INFO L226 Difference]: Without dead ends: 221 [2021-11-09 10:45:35,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-09 10:45:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-09 10:45:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-09 10:45:35,326 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-09 10:45:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:35,327 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-09 10:45:35,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-09 10:45:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 10:45:35,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:35,330 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:35,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:45:35,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-09 10:45:35,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:35,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018601916] [2021-11-09 10:45:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:35,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:35,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:35,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330630241] [2021-11-09 10:45:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:35,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:35,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:45:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:35,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:45:35,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:35,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:35,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018601916] [2021-11-09 10:45:35,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:35,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330630241] [2021-11-09 10:45:35,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330630241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:35,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:35,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:35,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177649334] [2021-11-09 10:45:35,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:35,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:35,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:35,749 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:35,871 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-09 10:45:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 10:45:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:35,875 INFO L225 Difference]: With dead ends: 288 [2021-11-09 10:45:35,875 INFO L226 Difference]: Without dead ends: 156 [2021-11-09 10:45:35,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-09 10:45:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-09 10:45:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-09 10:45:35,901 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-09 10:45:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:35,902 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-09 10:45:35,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-09 10:45:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 10:45:35,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:35,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:35,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:36,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-09 10:45:36,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:36,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149477869] [2021-11-09 10:45:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:36,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:36,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:36,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998562068] [2021-11-09 10:45:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:36,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:36,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:36,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:36,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:45:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:36,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:45:36,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:36,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:36,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149477869] [2021-11-09 10:45:36,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:36,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998562068] [2021-11-09 10:45:36,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998562068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:36,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:36,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:45:36,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607670233] [2021-11-09 10:45:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:45:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:45:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:36,536 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:36,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:36,640 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-09 10:45:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:45:36,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 10:45:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:36,642 INFO L225 Difference]: With dead ends: 299 [2021-11-09 10:45:36,642 INFO L226 Difference]: Without dead ends: 147 [2021-11-09 10:45:36,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-09 10:45:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-09 10:45:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-09 10:45:36,663 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-09 10:45:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:36,664 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-09 10:45:36,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-09 10:45:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 10:45:36,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:36,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:36,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:36,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:36,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-09 10:45:36,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:36,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130107101] [2021-11-09 10:45:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:36,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:36,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:36,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458005563] [2021-11-09 10:45:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:36,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:36,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:36,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:36,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:45:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:37,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:45:37,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:37,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:37,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130107101] [2021-11-09 10:45:37,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:37,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458005563] [2021-11-09 10:45:37,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458005563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:37,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:45:37,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:45:37,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463924051] [2021-11-09 10:45:37,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:45:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:45:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:37,313 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:37,344 INFO L93 Difference]: Finished difference Result 371 states and 453 transitions. [2021-11-09 10:45:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:45:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 10:45:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:37,349 INFO L225 Difference]: With dead ends: 371 [2021-11-09 10:45:37,349 INFO L226 Difference]: Without dead ends: 326 [2021-11-09 10:45:37,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-09 10:45:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2021-11-09 10:45:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 233 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 285 transitions. [2021-11-09 10:45:37,365 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 285 transitions. Word has length 59 [2021-11-09 10:45:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:37,367 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 285 transitions. [2021-11-09 10:45:37,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 285 transitions. [2021-11-09 10:45:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 10:45:37,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:37,375 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:37,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:37,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:37,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1357916902, now seen corresponding path program 2 times [2021-11-09 10:45:37,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:37,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612858051] [2021-11-09 10:45:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:37,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:37,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587758893] [2021-11-09 10:45:37,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:45:37,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:37,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:37,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:45:37,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:45:37,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:37,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:45:37,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-09 10:45:38,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612858051] [2021-11-09 10:45:38,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:38,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587758893] [2021-11-09 10:45:38,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587758893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:38,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:38,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:45:38,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125899200] [2021-11-09 10:45:38,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:45:38,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:45:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:38,577 INFO L87 Difference]: Start difference. First operand 234 states and 285 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:38,824 INFO L93 Difference]: Finished difference Result 410 states and 504 transitions. [2021-11-09 10:45:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-09 10:45:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:38,827 INFO L225 Difference]: With dead ends: 410 [2021-11-09 10:45:38,827 INFO L226 Difference]: Without dead ends: 232 [2021-11-09 10:45:38,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-09 10:45:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-09 10:45:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 231 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2021-11-09 10:45:38,836 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 110 [2021-11-09 10:45:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:38,836 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2021-11-09 10:45:38,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2021-11-09 10:45:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 10:45:38,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:38,838 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:38,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:39,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:39,061 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:39,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1177328342, now seen corresponding path program 1 times [2021-11-09 10:45:39,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:39,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939581186] [2021-11-09 10:45:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:39,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:39,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:39,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467718768] [2021-11-09 10:45:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:39,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:39,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:39,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:45:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:39,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:45:39,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:39,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:39,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939581186] [2021-11-09 10:45:39,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:39,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467718768] [2021-11-09 10:45:39,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467718768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:39,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:45:39,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:45:39,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602497595] [2021-11-09 10:45:39,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:45:39,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:45:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:39,754 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:39,796 INFO L93 Difference]: Finished difference Result 462 states and 563 transitions. [2021-11-09 10:45:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 117 [2021-11-09 10:45:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:39,804 INFO L225 Difference]: With dead ends: 462 [2021-11-09 10:45:39,805 INFO L226 Difference]: Without dead ends: 417 [2021-11-09 10:45:39,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-09 10:45:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 325. [2021-11-09 10:45:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 315 states have (on average 1.253968253968254) internal successors, (395), 324 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2021-11-09 10:45:39,820 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 117 [2021-11-09 10:45:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:39,821 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2021-11-09 10:45:39,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2021-11-09 10:45:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-09 10:45:39,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:39,827 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:39,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:40,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:40,041 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash -545585875, now seen corresponding path program 2 times [2021-11-09 10:45:40,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:40,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61063797] [2021-11-09 10:45:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:40,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:40,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:40,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672234761] [2021-11-09 10:45:40,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:45:40,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:40,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:40,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:45:40,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:45:40,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:45:40,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:45:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:45:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:40,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:40,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61063797] [2021-11-09 10:45:40,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:45:40,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672234761] [2021-11-09 10:45:40,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672234761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:45:40,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:45:40,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:45:40,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999868101] [2021-11-09 10:45:40,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:45:40,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:45:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:45:40,999 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:41,056 INFO L93 Difference]: Finished difference Result 555 states and 676 transitions. [2021-11-09 10:45:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:45:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 168 [2021-11-09 10:45:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:41,064 INFO L225 Difference]: With dead ends: 555 [2021-11-09 10:45:41,064 INFO L226 Difference]: Without dead ends: 510 [2021-11-09 10:45:41,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:45:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-09 10:45:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 418. [2021-11-09 10:45:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 408 states have (on average 1.2450980392156863) internal successors, (508), 417 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2021-11-09 10:45:41,081 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 168 [2021-11-09 10:45:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:41,082 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2021-11-09 10:45:41,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2021-11-09 10:45:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-09 10:45:41,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:41,085 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:41,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:45:41,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-09 10:45:41,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-09 10:45:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash -202059402, now seen corresponding path program 3 times [2021-11-09 10:45:41,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:41,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442307601] [2021-11-09 10:45:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:41,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:41,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:45:41,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008735596] [2021-11-09 10:45:41,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:45:41,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:45:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:41,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:45:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69f568-0885-467d-90f1-2100740223e6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process