./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array28_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array28_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8 --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 8b49bb3ea989868d96c18ff859c95dc74ebb805f64994c11617c2c5b61c8e87f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:45:47,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:45:47,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:45:47,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:45:47,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:45:47,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:45:47,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:45:47,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:45:47,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:45:47,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:45:47,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:45:47,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:45:47,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:45:47,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:45:47,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:45:47,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:45:47,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:45:47,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:45:47,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:45:47,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:45:47,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:45:47,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:45:47,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:45:47,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:45:47,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:45:47,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:45:47,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:45:47,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:45:47,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:45:47,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:45:47,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:45:47,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:45:47,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:45:47,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:45:47,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:45:47,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:45:47,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:45:47,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:45:47,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:45:47,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:45:47,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:45:47,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:45:47,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:45:47,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:45:47,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:45:47,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:45:47,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:45:47,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:45:47,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:45:47,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:45:47,570 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:45:47,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:45:47,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:45:47,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:45:47,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:45:47,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:45:47,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:45:47,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:45:47,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:45:47,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:45:47,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:45:47,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:47,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:45:47,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:45:47,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:45:47,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:45:47,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:45:47,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:45:47,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:45:47,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:45:47,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:45:47,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:45:47,575 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b49bb3ea989868d96c18ff859c95dc74ebb805f64994c11617c2c5b61c8e87f [2022-12-13 18:45:47,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:45:47,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:45:47,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:45:47,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:45:47,768 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:45:47,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array28_pattern.c [2022-12-13 18:45:50,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:45:50,516 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:45:50,516 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/sv-benchmarks/c/array-patterns/array28_pattern.c [2022-12-13 18:45:50,521 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/data/7feeca929/c95f519d08dc4ade90f27945962693dc/FLAG196733605 [2022-12-13 18:45:50,535 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/data/7feeca929/c95f519d08dc4ade90f27945962693dc [2022-12-13 18:45:50,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:45:50,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:45:50,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:50,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:45:50,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:45:50,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de1a942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50, skipping insertion in model container [2022-12-13 18:45:50,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:45:50,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:45:50,660 WARN L237 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_e457d538-9e66-44b9-8013-db743e502502/sv-benchmarks/c/array-patterns/array28_pattern.c[1246,1259] [2022-12-13 18:45:50,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:50,680 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:45:50,689 WARN L237 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_e457d538-9e66-44b9-8013-db743e502502/sv-benchmarks/c/array-patterns/array28_pattern.c[1246,1259] [2022-12-13 18:45:50,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:45:50,704 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:45:50,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50 WrapperNode [2022-12-13 18:45:50,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:45:50,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:50,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:45:50,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:45:50,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,728 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-12-13 18:45:50,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:45:50,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:45:50,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:45:50,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:45:50,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:45:50,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:45:50,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:45:50,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:45:50,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (1/1) ... [2022-12-13 18:45:50,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:45:50,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:50,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:45:50,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:45:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:45:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:45:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:45:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:45:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:45:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:45:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:45:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:45:50,876 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:45:50,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:45:50,993 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:45:50,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:45:50,997 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 18:45:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:50 BoogieIcfgContainer [2022-12-13 18:45:50,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:45:51,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:45:51,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:45:51,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:45:51,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:45:50" (1/3) ... [2022-12-13 18:45:51,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e5c0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:51, skipping insertion in model container [2022-12-13 18:45:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:45:50" (2/3) ... [2022-12-13 18:45:51,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e5c0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:45:51, skipping insertion in model container [2022-12-13 18:45:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:45:50" (3/3) ... [2022-12-13 18:45:51,005 INFO L112 eAbstractionObserver]: Analyzing ICFG array28_pattern.c [2022-12-13 18:45:51,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:45:51,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:45:51,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:45:51,065 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14d0268a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:45:51,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:45:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 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) [2022-12-13 18:45:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 18:45:51,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:51,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:51,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash -320975489, now seen corresponding path program 1 times [2022-12-13 18:45:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555752168] [2022-12-13 18:45:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:51,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555752168] [2022-12-13 18:45:51,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 18:45:51,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479731375] [2022-12-13 18:45:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:51,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:51,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:45:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 18:45:51,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:51,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:51,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479731375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:51,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:51,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:45:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655048969] [2022-12-13 18:45:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:45:51,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:51,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:45:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:45:51,282 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.619047619047619) internal successors, (34), 22 states have internal predecessors, (34), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-12-13 18:45:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:51,294 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2022-12-13 18:45:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:45:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-12-13 18:45:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:51,301 INFO L225 Difference]: With dead ends: 43 [2022-12-13 18:45:51,301 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 18:45:51,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:45:51,305 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:51,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 18:45:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-13 18:45:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-12-13 18:45:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-12-13 18:45:51,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2022-12-13 18:45:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:51,327 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-12-13 18:45:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-12-13 18:45:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-12-13 18:45:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 18:45:51,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:51,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:51,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:51,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 18:45:51,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1931938343, now seen corresponding path program 1 times [2022-12-13 18:45:51,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:51,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5237472] [2022-12-13 18:45:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:51,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579454354] [2022-12-13 18:45:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:51,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:51,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:45:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:51,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:45:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:51,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5237472] [2022-12-13 18:45:51,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:51,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579454354] [2022-12-13 18:45:51,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579454354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:51,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:51,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:51,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592015831] [2022-12-13 18:45:51,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:51,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:51,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:51,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:51,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:51,774 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-13 18:45:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:51,795 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 18:45:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-12-13 18:45:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:51,797 INFO L225 Difference]: With dead ends: 26 [2022-12-13 18:45:51,797 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 18:45:51,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:51,798 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:51,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 18:45:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 18:45:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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) [2022-12-13 18:45:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-13 18:45:51,804 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2022-12-13 18:45:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:51,804 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-13 18:45:51,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-13 18:45:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-13 18:45:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 18:45:51,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:51,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:51,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:45:52,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 18:45:52,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash -94215630, now seen corresponding path program 1 times [2022-12-13 18:45:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:52,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297060216] [2022-12-13 18:45:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:52,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:52,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083133023] [2022-12-13 18:45:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:52,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:52,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:52,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:45:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:52,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:45:52,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:45:52,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:52,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297060216] [2022-12-13 18:45:52,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:52,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083133023] [2022-12-13 18:45:52,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083133023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:52,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:52,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:45:52,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205879975] [2022-12-13 18:45:52,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:45:52,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:45:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:52,191 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-13 18:45:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:52,248 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-12-13 18:45:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:45:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-12-13 18:45:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:52,249 INFO L225 Difference]: With dead ends: 47 [2022-12-13 18:45:52,249 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 18:45:52,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:45:52,250 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:52,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:52,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 18:45:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2022-12-13 18:45:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 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) [2022-12-13 18:45:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-12-13 18:45:52,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 15 [2022-12-13 18:45:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:52,255 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-12-13 18:45:52,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-13 18:45:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-12-13 18:45:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 18:45:52,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:52,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:52,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:52,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash -169454663, now seen corresponding path program 1 times [2022-12-13 18:45:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:52,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81249147] [2022-12-13 18:45:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:52,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939178706] [2022-12-13 18:45:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:52,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:52,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:52,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:45:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:52,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:45:52,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:45:52,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:52,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:52,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81249147] [2022-12-13 18:45:52,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:52,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939178706] [2022-12-13 18:45:52,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939178706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:52,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:52,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284500699] [2022-12-13 18:45:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:52,593 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 18:45:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:52,638 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2022-12-13 18:45:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:52,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2022-12-13 18:45:52,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:52,640 INFO L225 Difference]: With dead ends: 46 [2022-12-13 18:45:52,640 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 18:45:52,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:52,641 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:52,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 18:45:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-12-13 18:45:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2022-12-13 18:45:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-12-13 18:45:52,645 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2022-12-13 18:45:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:52,645 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-12-13 18:45:52,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 18:45:52,645 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-12-13 18:45:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 18:45:52,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:52,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:52,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:52,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:52,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -308201553, now seen corresponding path program 1 times [2022-12-13 18:45:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:52,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532025583] [2022-12-13 18:45:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:52,893 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:52,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635300392] [2022-12-13 18:45:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:52,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:52,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:52,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:52,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:45:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:52,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:45:52,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:45:52,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:52,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:52,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532025583] [2022-12-13 18:45:52,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635300392] [2022-12-13 18:45:52,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635300392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:52,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:52,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:45:52,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218568626] [2022-12-13 18:45:52,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:52,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:45:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:45:52,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:52,970 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-13 18:45:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:53,015 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-12-13 18:45:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:45:53,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-12-13 18:45:53,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:53,017 INFO L225 Difference]: With dead ends: 57 [2022-12-13 18:45:53,017 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 18:45:53,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:45:53,018 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:53,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 18:45:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-12-13 18:45:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2022-12-13 18:45:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-12-13 18:45:53,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2022-12-13 18:45:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:53,024 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-12-13 18:45:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-13 18:45:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-12-13 18:45:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 18:45:53,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:53,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:53,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:53,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1924412114, now seen corresponding path program 1 times [2022-12-13 18:45:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:53,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721093915] [2022-12-13 18:45:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:53,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:53,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446262662] [2022-12-13 18:45:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:53,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:53,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:53,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:45:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:53,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 18:45:53,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:53,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 18:45:53,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 18:45:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:53,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:53,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 18:45:53,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-12-13 18:45:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721093915] [2022-12-13 18:45:53,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446262662] [2022-12-13 18:45:53,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446262662] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:53,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:53,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-12-13 18:45:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583009064] [2022-12-13 18:45:53,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:45:53,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:45:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:45:53,767 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2022-12-13 18:45:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:54,395 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-12-13 18:45:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:45:54,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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 22 [2022-12-13 18:45:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:54,396 INFO L225 Difference]: With dead ends: 58 [2022-12-13 18:45:54,396 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 18:45:54,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:45:54,398 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 129 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:54,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 37 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:45:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 18:45:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2022-12-13 18:45:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 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) [2022-12-13 18:45:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-12-13 18:45:54,406 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 22 [2022-12-13 18:45:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:54,407 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-12-13 18:45:54,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2022-12-13 18:45:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-12-13 18:45:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 18:45:54,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:54,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:54,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:45:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 18:45:54,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1610605580, now seen corresponding path program 2 times [2022-12-13 18:45:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:54,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425906018] [2022-12-13 18:45:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:54,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:54,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329650755] [2022-12-13 18:45:54,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:45:54,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:54,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:54,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:54,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:45:54,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:45:54,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:54,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:45:54,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:54,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:54,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425906018] [2022-12-13 18:45:54,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:54,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329650755] [2022-12-13 18:45:54,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329650755] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:54,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:54,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 18:45:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320399804] [2022-12-13 18:45:54,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:45:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:45:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:45:54,835 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-12-13 18:45:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:54,942 INFO L93 Difference]: Finished difference Result 145 states and 190 transitions. [2022-12-13 18:45:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:45:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 24 [2022-12-13 18:45:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:54,944 INFO L225 Difference]: With dead ends: 145 [2022-12-13 18:45:54,944 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 18:45:54,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:45:54,945 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:54,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 52 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:45:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 18:45:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2022-12-13 18:45:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3) internal successors, (104), 80 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) [2022-12-13 18:45:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2022-12-13 18:45:54,960 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 24 [2022-12-13 18:45:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:54,960 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2022-12-13 18:45:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-12-13 18:45:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2022-12-13 18:45:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 18:45:54,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:54,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:54,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:45:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:55,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1861003047, now seen corresponding path program 3 times [2022-12-13 18:45:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:55,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389659171] [2022-12-13 18:45:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:55,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273139644] [2022-12-13 18:45:55,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:45:55,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:55,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:55,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:55,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:45:55,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 18:45:55,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:55,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:45:55,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:45:55,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:45:55,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389659171] [2022-12-13 18:45:55,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:55,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273139644] [2022-12-13 18:45:55,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273139644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:55,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:55,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 18:45:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923814019] [2022-12-13 18:45:55,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:55,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:45:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:45:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:45:55,314 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-12-13 18:45:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:55,390 INFO L93 Difference]: Finished difference Result 174 states and 219 transitions. [2022-12-13 18:45:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:45:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 27 [2022-12-13 18:45:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:55,391 INFO L225 Difference]: With dead ends: 174 [2022-12-13 18:45:55,392 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 18:45:55,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:45:55,392 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:55,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 56 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 18:45:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 94. [2022-12-13 18:45:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2795698924731183) internal successors, (119), 93 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) [2022-12-13 18:45:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2022-12-13 18:45:55,403 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 27 [2022-12-13 18:45:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:55,403 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2022-12-13 18:45:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-12-13 18:45:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2022-12-13 18:45:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 18:45:55,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:55,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:55,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:45:55,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 18:45:55,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1161564239, now seen corresponding path program 1 times [2022-12-13 18:45:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:55,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303578412] [2022-12-13 18:45:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:55,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:55,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024211190] [2022-12-13 18:45:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:55,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:55,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:55,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:55,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:45:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:55,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:45:55,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:45:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:45:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303578412] [2022-12-13 18:45:55,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024211190] [2022-12-13 18:45:55,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024211190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:55,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:55,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 18:45:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659166563] [2022-12-13 18:45:55,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:45:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:45:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:45:55,736 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-12-13 18:45:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:55,903 INFO L93 Difference]: Finished difference Result 185 states and 239 transitions. [2022-12-13 18:45:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:45:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 28 [2022-12-13 18:45:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:55,905 INFO L225 Difference]: With dead ends: 185 [2022-12-13 18:45:55,905 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 18:45:55,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:45:55,906 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 66 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:55,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 35 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:45:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 18:45:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2022-12-13 18:45:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.240506329113924) internal successors, (98), 79 states have internal predecessors, (98), 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) [2022-12-13 18:45:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2022-12-13 18:45:55,919 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 28 [2022-12-13 18:45:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:55,919 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2022-12-13 18:45:55,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) [2022-12-13 18:45:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2022-12-13 18:45:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 18:45:55,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:55,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:55,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:45:56,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:56,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:56,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1512912821, now seen corresponding path program 1 times [2022-12-13 18:45:56,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:56,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081511629] [2022-12-13 18:45:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:56,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43983299] [2022-12-13 18:45:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:56,151 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:56,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:45:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:56,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:45:56,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:45:56,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:45:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081511629] [2022-12-13 18:45:56,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43983299] [2022-12-13 18:45:56,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43983299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:56,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:56,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 18:45:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595243005] [2022-12-13 18:45:56,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:45:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:45:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:45:56,422 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-12-13 18:45:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:56,592 INFO L93 Difference]: Finished difference Result 173 states and 226 transitions. [2022-12-13 18:45:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:45:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 28 [2022-12-13 18:45:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:56,593 INFO L225 Difference]: With dead ends: 173 [2022-12-13 18:45:56,593 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 18:45:56,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:45:56,594 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:56,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 39 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:45:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 18:45:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2022-12-13 18:45:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 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) [2022-12-13 18:45:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2022-12-13 18:45:56,600 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 28 [2022-12-13 18:45:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:56,601 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2022-12-13 18:45:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-12-13 18:45:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2022-12-13 18:45:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 18:45:56,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:56,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:56,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 18:45:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:45:56,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1901938394, now seen corresponding path program 1 times [2022-12-13 18:45:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:56,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280716253] [2022-12-13 18:45:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:56,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:56,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064595648] [2022-12-13 18:45:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:56,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:56,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:45:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:45:56,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:45:56,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:45:56,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:45:57,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:57,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280716253] [2022-12-13 18:45:57,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:57,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064595648] [2022-12-13 18:45:57,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064595648] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:57,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:57,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 18:45:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113863750] [2022-12-13 18:45:57,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:45:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:45:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:45:57,011 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2022-12-13 18:45:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:57,107 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2022-12-13 18:45:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:45:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 32 [2022-12-13 18:45:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:57,108 INFO L225 Difference]: With dead ends: 89 [2022-12-13 18:45:57,108 INFO L226 Difference]: Without dead ends: 76 [2022-12-13 18:45:57,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:45:57,109 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 62 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:57,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 35 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:45:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-13 18:45:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2022-12-13 18:45:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 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) [2022-12-13 18:45:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-12-13 18:45:57,116 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 32 [2022-12-13 18:45:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:57,117 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-12-13 18:45:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2022-12-13 18:45:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-12-13 18:45:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 18:45:57,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:57,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:57,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:45:57,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:57,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -533293431, now seen corresponding path program 2 times [2022-12-13 18:45:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:57,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668920328] [2022-12-13 18:45:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:57,345 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:57,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840517347] [2022-12-13 18:45:57,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:45:57,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:57,349 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:57,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:45:57,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:45:57,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:57,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:45:57,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 18:45:57,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:45:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 18:45:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:57,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668920328] [2022-12-13 18:45:57,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:57,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840517347] [2022-12-13 18:45:57,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840517347] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:45:57,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:45:57,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-12-13 18:45:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253088270] [2022-12-13 18:45:57,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:45:57,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:45:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:45:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:45:57,470 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-12-13 18:45:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:57,560 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2022-12-13 18:45:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:45:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-12-13 18:45:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:57,561 INFO L225 Difference]: With dead ends: 140 [2022-12-13 18:45:57,561 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 18:45:57,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:45:57,561 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:57,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:45:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 18:45:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2022-12-13 18:45:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2) internal successors, (78), 65 states have internal predecessors, (78), 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) [2022-12-13 18:45:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2022-12-13 18:45:57,567 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 44 [2022-12-13 18:45:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:57,567 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2022-12-13 18:45:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-12-13 18:45:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2022-12-13 18:45:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 18:45:57,568 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:57,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:57,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:45:57,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:57,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash -436388146, now seen corresponding path program 3 times [2022-12-13 18:45:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:57,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231483131] [2022-12-13 18:45:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:57,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:57,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815088249] [2022-12-13 18:45:57,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:45:57,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:57,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:57,791 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:57,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:45:57,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 18:45:57,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:57,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:45:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 18:45:57,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:45:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:45:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231483131] [2022-12-13 18:45:57,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:45:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815088249] [2022-12-13 18:45:57,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815088249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:45:57,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:45:57,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:45:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189959108] [2022-12-13 18:45:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:45:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:45:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:45:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:45:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:45:57,860 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-12-13 18:45:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:45:57,910 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2022-12-13 18:45:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:45:57,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 45 [2022-12-13 18:45:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:45:57,911 INFO L225 Difference]: With dead ends: 90 [2022-12-13 18:45:57,911 INFO L226 Difference]: Without dead ends: 70 [2022-12-13 18:45:57,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:45:57,912 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:45:57,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 25 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:45:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-13 18:45:57,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2022-12-13 18:45:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) [2022-12-13 18:45:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-12-13 18:45:57,917 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 45 [2022-12-13 18:45:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:45:57,917 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-12-13 18:45:57,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-12-13 18:45:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-12-13 18:45:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 18:45:57,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:45:57,918 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:45:57,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 18:45:58,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:45:58,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:45:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:45:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -570401652, now seen corresponding path program 4 times [2022-12-13 18:45:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:45:58,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989902367] [2022-12-13 18:45:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:45:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:45:58,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:45:58,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964973621] [2022-12-13 18:45:58,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:45:58,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:45:58,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:45:58,128 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:45:58,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e457d538-9e66-44b9-8013-db743e502502/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:45:58,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:45:58,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:45:58,246 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 18:45:58,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:45:58,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-13 18:45:58,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2022-12-13 18:45:58,554 INFO L321 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2022-12-13 18:45:58,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2022-12-13 18:45:58,755 INFO L321 Elim1Store]: treesize reduction 81, result has 28.3 percent of original size [2022-12-13 18:45:58,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 70 [2022-12-13 18:45:59,400 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-12-13 18:45:59,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 21 [2022-12-13 18:45:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:45:59,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:46:02,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 259 [2022-12-13 18:46:02,600 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-12-13 18:46:02,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153025966112 treesize of output 147925692448