./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU --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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:55:58,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:55:58,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:55:58,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:55:58,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:55:58,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:55:58,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:55:58,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:55:58,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:55:58,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:55:58,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:55:58,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:55:58,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:55:58,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:55:58,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:55:58,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:55:58,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:55:58,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:55:58,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:55:58,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:55:58,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:55:58,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:55:58,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:55:58,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:55:58,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:55:58,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:55:58,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:55:58,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:55:58,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:55:58,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:55:58,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:55:58,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:55:58,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:55:58,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:55:58,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:55:58,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:55:58,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:55:58,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:55:58,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:55:58,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:55:58,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:55:58,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:55:58,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:55:58,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:55:58,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:55:58,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:55:58,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:55:58,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:55:58,719 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:55:58,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:55:58,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:55:58,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:55:58,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:55:58,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:55:58,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:55:58,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:55:58,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:55:58,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:55:58,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:55:58,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:55:58,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:55:58,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:55:58,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:55:58,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:55:58,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:55:58,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:55:58,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:55:58,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:55:58,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:55:58,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:55:58,725 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:55:58,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:55:58,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:55:58,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:55:58,728 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_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2021-11-02 22:55:58,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:55:59,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:55:59,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:55:59,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:55:59,005 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:55:59,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-02 22:55:59,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/data/da1332d67/e0505a9006884b8c8f3628cf620e4895/FLAG5c3d6ef94 [2021-11-02 22:55:59,645 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:55:59,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2021-11-02 22:55:59,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/data/da1332d67/e0505a9006884b8c8f3628cf620e4895/FLAG5c3d6ef94 [2021-11-02 22:55:59,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/data/da1332d67/e0505a9006884b8c8f3628cf620e4895 [2021-11-02 22:55:59,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:55:59,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:55:59,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:55:59,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:55:59,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:55:59,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:55:59" (1/1) ... [2021-11-02 22:55:59,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc056a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:55:59, skipping insertion in model container [2021-11-02 22:55:59,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:55:59" (1/1) ... [2021-11-02 22:55:59,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:55:59,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:56:00,326 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_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-02 22:56:00,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:56:00,430 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:56:00,492 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_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2021-11-02 22:56:00,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:56:00,637 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:56:00,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00 WrapperNode [2021-11-02 22:56:00,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:56:00,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:56:00,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:56:00,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:56:00,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:56:00,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:56:00,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:56:00,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:56:00,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:56:00,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:56:00,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:56:00,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:56:00,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (1/1) ... [2021-11-02 22:56:00,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:56:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:00,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:56:00,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:56:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:56:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:56:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:56:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:56:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:56:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:56:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:56:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:56:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:56:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:56:02,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:56:02,089 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-02 22:56:02,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:02 BoogieIcfgContainer [2021-11-02 22:56:02,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:56:02,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:56:02,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:56:02,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:56:02,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:55:59" (1/3) ... [2021-11-02 22:56:02,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad76d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:02, skipping insertion in model container [2021-11-02 22:56:02,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:56:00" (2/3) ... [2021-11-02 22:56:02,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad76d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:56:02, skipping insertion in model container [2021-11-02 22:56:02,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:56:02" (3/3) ... [2021-11-02 22:56:02,103 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2021-11-02 22:56:02,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:56:02,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 22:56:02,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:56:02,166 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 [2021-11-02 22:56:02,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 22:56:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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) [2021-11-02 22:56:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:56:02,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:02,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:02,191 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)] === [2021-11-02 22:56:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-02 22:56:02,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:02,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753298607] [2021-11-02 22:56:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:02,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:02,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753298607] [2021-11-02 22:56:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753298607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:02,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:02,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:56:02,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836221771] [2021-11-02 22:56:02,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:56:02,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:56:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:56:02,401 INFO L87 Difference]: Start difference. First operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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) [2021-11-02 22:56:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:02,465 INFO L93 Difference]: Finished difference Result 332 states and 538 transitions. [2021-11-02 22:56:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:56:02,467 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 [2021-11-02 22:56:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:02,482 INFO L225 Difference]: With dead ends: 332 [2021-11-02 22:56:02,483 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 22:56:02,488 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 [2021-11-02 22:56:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 22:56:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-02 22:56:02,557 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) [2021-11-02 22:56:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-02 22:56:02,566 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-02 22:56:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:02,568 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-02 22:56:02,568 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) [2021-11-02 22:56:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-02 22:56:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:56:02,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:02,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:02,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:56:02,570 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)] === [2021-11-02 22:56:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-02 22:56:02,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:02,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118024343] [2021-11-02 22:56:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:02,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:02,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118024343] [2021-11-02 22:56:02,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118024343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:02,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:02,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:56:02,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327257244] [2021-11-02 22:56:02,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:02,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:02,700 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) [2021-11-02 22:56:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:02,738 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-02 22:56:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:02,739 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 [2021-11-02 22:56:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:02,742 INFO L225 Difference]: With dead ends: 266 [2021-11-02 22:56:02,742 INFO L226 Difference]: Without dead ends: 221 [2021-11-02 22:56:02,743 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 [2021-11-02 22:56:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-02 22:56:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-02 22:56:02,756 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) [2021-11-02 22:56:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-02 22:56:02,758 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-02 22:56:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:02,758 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-02 22:56:02,758 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) [2021-11-02 22:56:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-02 22:56:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:56:02,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:02,762 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] [2021-11-02 22:56:02,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:56:02,763 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)] === [2021-11-02 22:56:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-02 22:56:02,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:02,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518602493] [2021-11-02 22:56:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:02,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:02,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004278717] [2021-11-02 22:56:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:02,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:02,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:56:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:56:03,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:03,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:03,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518602493] [2021-11-02 22:56:03,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:03,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004278717] [2021-11-02 22:56:03,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004278717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:03,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:03,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:56:03,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212128583] [2021-11-02 22:56:03,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:03,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:03,449 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) [2021-11-02 22:56:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:03,572 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-02 22:56:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:03,573 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 [2021-11-02 22:56:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:03,575 INFO L225 Difference]: With dead ends: 288 [2021-11-02 22:56:03,575 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 22:56:03,576 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 [2021-11-02 22:56:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 22:56:03,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-02 22:56:03,586 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) [2021-11-02 22:56:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-02 22:56:03,588 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-02 22:56:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:03,588 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-02 22:56:03,589 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) [2021-11-02 22:56:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-02 22:56:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:56:03,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:03,592 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] [2021-11-02 22:56:03,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:03,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:03,808 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)] === [2021-11-02 22:56:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-02 22:56:03,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:03,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180615225] [2021-11-02 22:56:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:03,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:03,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:03,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094910551] [2021-11-02 22:56:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:03,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:03,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:03,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:03,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:56:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:04,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:56:04,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:04,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:04,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180615225] [2021-11-02 22:56:04,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:04,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094910551] [2021-11-02 22:56:04,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094910551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:04,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:04,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:56:04,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766060041] [2021-11-02 22:56:04,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:56:04,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:56:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:56:04,317 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) [2021-11-02 22:56:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:04,438 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-02 22:56:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:56:04,439 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 [2021-11-02 22:56:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:04,443 INFO L225 Difference]: With dead ends: 299 [2021-11-02 22:56:04,444 INFO L226 Difference]: Without dead ends: 147 [2021-11-02 22:56:04,445 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 [2021-11-02 22:56:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-02 22:56:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-02 22:56:04,467 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) [2021-11-02 22:56:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-02 22:56:04,468 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-02 22:56:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:04,469 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-02 22:56:04,469 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) [2021-11-02 22:56:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-02 22:56:04,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:56:04,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:04,479 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] [2021-11-02 22:56:04,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:04,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:04,693 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)] === [2021-11-02 22:56:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-02 22:56:04,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:04,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705932166] [2021-11-02 22:56:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:04,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:04,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:04,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829437025] [2021-11-02 22:56:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:04,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:04,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:04,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:04,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:56:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:04,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:56:04,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:05,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:05,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705932166] [2021-11-02 22:56:05,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:05,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829437025] [2021-11-02 22:56:05,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829437025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:05,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:05,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 22:56:05,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34394347] [2021-11-02 22:56:05,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:56:05,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:56:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:56:05,150 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) [2021-11-02 22:56:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:05,188 INFO L93 Difference]: Finished difference Result 371 states and 453 transitions. [2021-11-02 22:56:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:56:05,189 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 [2021-11-02 22:56:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:05,192 INFO L225 Difference]: With dead ends: 371 [2021-11-02 22:56:05,192 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 22:56:05,193 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 [2021-11-02 22:56:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 22:56:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2021-11-02 22:56:05,209 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) [2021-11-02 22:56:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 285 transitions. [2021-11-02 22:56:05,210 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 285 transitions. Word has length 59 [2021-11-02 22:56:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:05,217 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 285 transitions. [2021-11-02 22:56:05,217 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) [2021-11-02 22:56:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 285 transitions. [2021-11-02 22:56:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 22:56:05,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:05,220 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] [2021-11-02 22:56:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:05,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:05,441 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)] === [2021-11-02 22:56:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1357916902, now seen corresponding path program 2 times [2021-11-02 22:56:05,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:05,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351045996] [2021-11-02 22:56:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:05,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:05,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:05,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912502429] [2021-11-02 22:56:05,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:56:05,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:05,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:05,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:56:05,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:56:05,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:05,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:56:05,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-02 22:56:06,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:06,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351045996] [2021-11-02 22:56:06,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:06,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912502429] [2021-11-02 22:56:06,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912502429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:06,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:56:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749702090] [2021-11-02 22:56:06,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:56:06,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:06,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:56:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:56:06,512 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) [2021-11-02 22:56:06,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:06,690 INFO L93 Difference]: Finished difference Result 410 states and 504 transitions. [2021-11-02 22:56:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:06,691 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 [2021-11-02 22:56:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:06,692 INFO L225 Difference]: With dead ends: 410 [2021-11-02 22:56:06,692 INFO L226 Difference]: Without dead ends: 232 [2021-11-02 22:56:06,693 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 [2021-11-02 22:56:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-02 22:56:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-02 22:56:06,701 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) [2021-11-02 22:56:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2021-11-02 22:56:06,703 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 110 [2021-11-02 22:56:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:06,703 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2021-11-02 22:56:06,703 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) [2021-11-02 22:56:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2021-11-02 22:56:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-02 22:56:06,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:06,705 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] [2021-11-02 22:56:06,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:06,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 22:56:06,921 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)] === [2021-11-02 22:56:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1177328342, now seen corresponding path program 1 times [2021-11-02 22:56:06,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:06,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141596271] [2021-11-02 22:56:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:06,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:06,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:06,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169845616] [2021-11-02 22:56:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:06,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:06,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:06,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:06,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:56:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:56:07,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 22:56:07,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:07,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141596271] [2021-11-02 22:56:07,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:07,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169845616] [2021-11-02 22:56:07,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169845616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:56:07,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:56:07,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:56:07,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510539004] [2021-11-02 22:56:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:56:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:56:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:07,563 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:07,588 INFO L93 Difference]: Finished difference Result 418 states and 516 transitions. [2021-11-02 22:56:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:56:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-02 22:56:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:07,590 INFO L225 Difference]: With dead ends: 418 [2021-11-02 22:56:07,590 INFO L226 Difference]: Without dead ends: 236 [2021-11-02 22:56:07,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:56:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-02 22:56:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-11-02 22:56:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 226 states have (on average 1.2654867256637168) internal successors, (286), 235 states have internal predecessors, (286), 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) [2021-11-02 22:56:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 286 transitions. [2021-11-02 22:56:07,599 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 286 transitions. Word has length 117 [2021-11-02 22:56:07,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:07,600 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 286 transitions. [2021-11-02 22:56:07,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 286 transitions. [2021-11-02 22:56:07,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 22:56:07,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:07,602 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, 1, 1] [2021-11-02 22:56:07,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:07,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:07,829 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)] === [2021-11-02 22:56:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 375393205, now seen corresponding path program 1 times [2021-11-02 22:56:07,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:07,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614066794] [2021-11-02 22:56:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:07,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:07,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:07,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754812011] [2021-11-02 22:56:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:07,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:07,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:07,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:56:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:08,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:56:08,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 22:56:08,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:08,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614066794] [2021-11-02 22:56:08,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:08,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754812011] [2021-11-02 22:56:08,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754812011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:08,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:08,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 22:56:08,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904037598] [2021-11-02 22:56:08,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:56:08,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:56:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:56:08,577 INFO L87 Difference]: Start difference. First operand 236 states and 286 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-02 22:56:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:08,609 INFO L93 Difference]: Finished difference Result 425 states and 523 transitions. [2021-11-02 22:56:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:56:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 119 [2021-11-02 22:56:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:08,612 INFO L225 Difference]: With dead ends: 425 [2021-11-02 22:56:08,612 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 22:56:08,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:56:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 22:56:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-02 22:56:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 230 states have (on average 1.2608695652173914) internal successors, (290), 239 states have internal predecessors, (290), 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) [2021-11-02 22:56:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2021-11-02 22:56:08,622 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 119 [2021-11-02 22:56:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:08,622 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2021-11-02 22:56:08,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-02 22:56:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2021-11-02 22:56:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:56:08,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:08,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:08,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:08,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:08,838 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)] === [2021-11-02 22:56:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1447349194, now seen corresponding path program 2 times [2021-11-02 22:56:08,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:08,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099640800] [2021-11-02 22:56:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:08,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:08,866 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:08,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935929480] [2021-11-02 22:56:08,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:56:08,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:08,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:08,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:56:09,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:56:09,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:09,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:56:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 22:56:09,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:09,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099640800] [2021-11-02 22:56:09,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:09,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935929480] [2021-11-02 22:56:09,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935929480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:09,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:09,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:56:09,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996170634] [2021-11-02 22:56:09,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:09,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:09,607 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-02 22:56:09,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:09,642 INFO L93 Difference]: Finished difference Result 432 states and 530 transitions. [2021-11-02 22:56:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:09,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 121 [2021-11-02 22:56:09,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:09,644 INFO L225 Difference]: With dead ends: 432 [2021-11-02 22:56:09,645 INFO L226 Difference]: Without dead ends: 244 [2021-11-02 22:56:09,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-02 22:56:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-02 22:56:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2564102564102564) internal successors, (294), 243 states have internal predecessors, (294), 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) [2021-11-02 22:56:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 294 transitions. [2021-11-02 22:56:09,653 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 294 transitions. Word has length 121 [2021-11-02 22:56:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:09,654 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 294 transitions. [2021-11-02 22:56:09,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-02 22:56:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 294 transitions. [2021-11-02 22:56:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 22:56:09,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:09,656 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-02 22:56:09,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-02 22:56:09,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:56:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash 414988629, now seen corresponding path program 3 times [2021-11-02 22:56:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:09,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321818090] [2021-11-02 22:56:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:09,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:09,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:09,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328648334] [2021-11-02 22:56:09,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:56:09,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:09,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:09,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:56:24,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 22:56:24,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:24,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:56:24,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:56:24,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:24,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321818090] [2021-11-02 22:56:24,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:24,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328648334] [2021-11-02 22:56:24,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328648334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:24,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:24,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:56:24,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264252499] [2021-11-02 22:56:24,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:56:24,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:56:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:24,933 INFO L87 Difference]: Start difference. First operand 244 states and 294 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:25,008 INFO L93 Difference]: Finished difference Result 486 states and 587 transitions. [2021-11-02 22:56:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:56:25,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-02 22:56:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:25,013 INFO L225 Difference]: With dead ends: 486 [2021-11-02 22:56:25,013 INFO L226 Difference]: Without dead ends: 441 [2021-11-02 22:56:25,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:56:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-02 22:56:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 343. [2021-11-02 22:56:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 333 states have (on average 1.2402402402402402) internal successors, (413), 342 states have internal predecessors, (413), 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) [2021-11-02 22:56:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 413 transitions. [2021-11-02 22:56:25,033 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 413 transitions. Word has length 123 [2021-11-02 22:56:25,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:25,035 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 413 transitions. [2021-11-02 22:56:25,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 413 transitions. [2021-11-02 22:56:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-02 22:56:25,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:25,039 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:25,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:25,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:56:25,261 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:56:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1984379982, now seen corresponding path program 4 times [2021-11-02 22:56:25,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:25,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269195193] [2021-11-02 22:56:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:25,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:25,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810798233] [2021-11-02 22:56:25,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:56:25,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:25,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:25,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:56:25,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:56:25,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:25,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:56:25,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:56:26,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:26,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269195193] [2021-11-02 22:56:26,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:26,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810798233] [2021-11-02 22:56:26,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810798233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:26,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:26,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:56:26,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068332974] [2021-11-02 22:56:26,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:56:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:56:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:56:26,486 INFO L87 Difference]: Start difference. First operand 343 states and 413 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2021-11-02 22:56:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:26,557 INFO L93 Difference]: Finished difference Result 585 states and 706 transitions. [2021-11-02 22:56:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:56:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 174 [2021-11-02 22:56:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:26,563 INFO L225 Difference]: With dead ends: 585 [2021-11-02 22:56:26,563 INFO L226 Difference]: Without dead ends: 540 [2021-11-02 22:56:26,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:56:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-02 22:56:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 442. [2021-11-02 22:56:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 432 states have (on average 1.2314814814814814) internal successors, (532), 441 states have internal predecessors, (532), 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) [2021-11-02 22:56:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 532 transitions. [2021-11-02 22:56:26,588 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 532 transitions. Word has length 174 [2021-11-02 22:56:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:26,589 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 532 transitions. [2021-11-02 22:56:26,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2021-11-02 22:56:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 532 transitions. [2021-11-02 22:56:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-02 22:56:26,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:26,594 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, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:26,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:26,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:56:26,821 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:56:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash 331292853, now seen corresponding path program 5 times [2021-11-02 22:56:26,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:26,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321878988] [2021-11-02 22:56:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:26,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:26,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:26,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932903395] [2021-11-02 22:56:26,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:56:26,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:26,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:26,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:56:27,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-02 22:56:27,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:27,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:56:27,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-02 22:56:28,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:28,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321878988] [2021-11-02 22:56:28,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:56:28,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932903395] [2021-11-02 22:56:28,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932903395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:28,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:56:28,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 22:56:28,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352250461] [2021-11-02 22:56:28,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:56:28,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:56:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:56:28,097 INFO L87 Difference]: Start difference. First operand 442 states and 532 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-02 22:56:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:28,160 INFO L93 Difference]: Finished difference Result 839 states and 1021 transitions. [2021-11-02 22:56:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:56:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 225 [2021-11-02 22:56:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:28,164 INFO L225 Difference]: With dead ends: 839 [2021-11-02 22:56:28,165 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 22:56:28,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:56:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 22:56:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-02 22:56:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 440 states have (on average 1.2272727272727273) internal successors, (540), 449 states have internal predecessors, (540), 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) [2021-11-02 22:56:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 540 transitions. [2021-11-02 22:56:28,188 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 540 transitions. Word has length 225 [2021-11-02 22:56:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:28,188 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 540 transitions. [2021-11-02 22:56:28,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-02 22:56:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 540 transitions. [2021-11-02 22:56:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 22:56:28,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:28,194 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:28,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:28,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:56:28,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:56:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1136770102, now seen corresponding path program 6 times [2021-11-02 22:56:28,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:28,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019408183] [2021-11-02 22:56:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:28,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:28,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:56:28,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883992735] [2021-11-02 22:56:28,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:56:28,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:28,443 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:28,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e19325e1-aeed-4e8c-985f-79cdb68aa6d4/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process