./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS --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 4fa401c700a21fa1f98a1481c8e8ba1555a45c0429555dc041a1c04ce1059991 --- 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-4e7fbc6 [2022-11-23 03:48:16,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:48:16,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:48:16,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:48:16,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:48:16,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:48:16,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:48:16,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:48:16,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:48:16,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:48:16,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:48:16,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:48:16,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:48:16,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:48:16,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:48:16,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:48:16,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:48:16,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:48:16,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:48:16,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:48:16,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:48:16,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:48:16,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:48:16,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:48:16,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:48:16,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:48:16,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:48:16,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:48:16,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:48:16,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:48:16,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:48:16,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:48:16,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:48:16,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:48:16,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:48:16,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:48:16,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:48:16,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:48:16,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:48:16,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:48:16,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:48:16,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:48:16,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:48:16,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:48:16,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:48:16,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:48:16,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:48:16,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:48:16,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:48:16,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:48:16,595 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:48:16,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:48:16,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:48:16,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:48:16,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:48:16,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:48:16,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:48:16,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:48:16,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:48:16,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:48:16,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:48:16,598 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:48:16,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:48:16,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:48:16,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:48:16,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:48:16,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:48:16,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:48:16,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:48:16,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:48:16,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:48:16,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:48:16,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:48:16,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:48:16,602 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:48:16,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:48:16,603 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_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa401c700a21fa1f98a1481c8e8ba1555a45c0429555dc041a1c04ce1059991 [2022-11-23 03:48:16,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:48:16,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:48:16,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:48:16,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:48:16,969 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:48:16,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2022-11-23 03:48:20,813 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:48:21,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:48:21,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2022-11-23 03:48:21,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/data/a07a634d8/f53ff5a99d1445afbbff537c24fdb750/FLAG0d7951341 [2022-11-23 03:48:21,073 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/data/a07a634d8/f53ff5a99d1445afbbff537c24fdb750 [2022-11-23 03:48:21,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:48:21,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:48:21,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:48:21,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:48:21,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:48:21,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2e1304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21, skipping insertion in model container [2022-11-23 03:48:21,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:48:21,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:48:21,309 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_bd207211-78a5-4872-84ca-e19a58a110dd/sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c[421,434] [2022-11-23 03:48:21,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:48:21,344 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:48:21,359 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_bd207211-78a5-4872-84ca-e19a58a110dd/sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c[421,434] [2022-11-23 03:48:21,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:48:21,386 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:48:21,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21 WrapperNode [2022-11-23 03:48:21,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:48:21,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:48:21,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:48:21,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:48:21,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,426 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2022-11-23 03:48:21,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:48:21,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:48:21,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:48:21,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:48:21,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:48:21,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:48:21,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:48:21,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:48:21,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (1/1) ... [2022-11-23 03:48:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:48:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:21,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:48:21,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:48:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:48:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 03:48:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 03:48:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:48:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:48:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:48:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:48:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:48:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:48:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:48:21,702 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:48:21,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:48:21,980 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:48:21,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:48:21,989 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 03:48:21,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:21 BoogieIcfgContainer [2022-11-23 03:48:21,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:48:21,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:48:21,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:48:22,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:48:22,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:48:21" (1/3) ... [2022-11-23 03:48:22,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6862b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:22, skipping insertion in model container [2022-11-23 03:48:22,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:21" (2/3) ... [2022-11-23 03:48:22,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6862b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:22, skipping insertion in model container [2022-11-23 03:48:22,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:21" (3/3) ... [2022-11-23 03:48:22,033 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-2-n-u.c [2022-11-23 03:48:22,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:48:22,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:48:22,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:48:22,186 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;@40105509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:48:22,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:48:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 03:48:22,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:22,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:22,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1178325179, now seen corresponding path program 1 times [2022-11-23 03:48:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:22,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416412053] [2022-11-23 03:48:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:22,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767476947] [2022-11-23 03:48:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:22,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:22,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:48:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:22,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:48:22,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:48:22,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:22,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416412053] [2022-11-23 03:48:22,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:22,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767476947] [2022-11-23 03:48:22,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767476947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:22,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:22,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:48:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120826074] [2022-11-23 03:48:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:22,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:48:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:48:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:48:22,585 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:22,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:22,607 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2022-11-23 03:48:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:48:22,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-23 03:48:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:22,617 INFO L225 Difference]: With dead ends: 43 [2022-11-23 03:48:22,617 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 03:48:22,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:48:22,626 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-11-23 03:48:22,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:48:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 03:48:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 03:48:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-23 03:48:22,666 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 18 [2022-11-23 03:48:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-23 03:48:22,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-23 03:48:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 03:48:22,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:22,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:22,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:48:22,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1509384059, now seen corresponding path program 1 times [2022-11-23 03:48:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472512141] [2022-11-23 03:48:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:22,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:22,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:22,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739541749] [2022-11-23 03:48:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:22,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:22,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:48:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:23,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:48:23,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:23,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472512141] [2022-11-23 03:48:23,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739541749] [2022-11-23 03:48:23,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739541749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:23,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:23,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:48:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556279955] [2022-11-23 03:48:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:48:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:48:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:48:23,228 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:23,315 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-23 03:48:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:48:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-23 03:48:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:23,317 INFO L225 Difference]: With dead ends: 38 [2022-11-23 03:48:23,317 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 03:48:23,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:48:23,320 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:23,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:48:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 03:48:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-11-23 03:48:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-23 03:48:23,328 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 18 [2022-11-23 03:48:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:23,330 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-23 03:48:23,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-23 03:48:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:48:23,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:23,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:23,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:23,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:23,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1347743446, now seen corresponding path program 1 times [2022-11-23 03:48:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:23,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194514972] [2022-11-23 03:48:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:23,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:23,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936703236] [2022-11-23 03:48:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:23,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:23,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:23,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:23,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:48:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:23,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:48:23,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:23,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:23,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194514972] [2022-11-23 03:48:23,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:23,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936703236] [2022-11-23 03:48:23,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936703236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:23,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:48:23,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:48:23,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351253651] [2022-11-23 03:48:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:23,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:48:23,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:48:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:48:23,751 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:23,835 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-11-23 03:48:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:48:23,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-23 03:48:23,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:23,837 INFO L225 Difference]: With dead ends: 50 [2022-11-23 03:48:23,837 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 03:48:23,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:48:23,846 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:23,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:48:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 03:48:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-23 03:48:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-23 03:48:23,861 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 21 [2022-11-23 03:48:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:23,864 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-23 03:48:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-23 03:48:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 03:48:23,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:23,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:23,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:24,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:24,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:24,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash -142126156, now seen corresponding path program 1 times [2022-11-23 03:48:24,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:24,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883892023] [2022-11-23 03:48:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:24,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:24,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:24,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334091961] [2022-11-23 03:48:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:24,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:24,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:24,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:48:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:24,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 03:48:24,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:24,430 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 [2022-11-23 03:48:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:48:24,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:48:24,939 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 27 treesize of output 25 [2022-11-23 03:48:24,952 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 41 treesize of output 39 [2022-11-23 03:48:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883892023] [2022-11-23 03:48:25,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334091961] [2022-11-23 03:48:25,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334091961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:48:25,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:48:25,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-11-23 03:48:25,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947703358] [2022-11-23 03:48:25,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:48:25,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 03:48:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 03:48:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:48:25,360 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 03:48:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:26,815 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2022-11-23 03:48:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-23 03:48:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2022-11-23 03:48:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:26,818 INFO L225 Difference]: With dead ends: 91 [2022-11-23 03:48:26,818 INFO L226 Difference]: Without dead ends: 89 [2022-11-23 03:48:26,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=407, Invalid=1485, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 03:48:26,820 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 246 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:26,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 140 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:48:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-23 03:48:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 30. [2022-11-23 03:48:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-23 03:48:26,841 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 22 [2022-11-23 03:48:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:26,841 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-23 03:48:26,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 03:48:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-23 03:48:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 03:48:26,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:26,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:26,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:27,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash 762284573, now seen corresponding path program 1 times [2022-11-23 03:48:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:27,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508605087] [2022-11-23 03:48:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:27,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:27,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732604389] [2022-11-23 03:48:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:27,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:27,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:27,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:48:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:27,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:48:27,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:27,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:48:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508605087] [2022-11-23 03:48:27,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732604389] [2022-11-23 03:48:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732604389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:48:27,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:48:27,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 03:48:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844148367] [2022-11-23 03:48:27,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:48:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:48:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:48:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:48:27,295 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:27,454 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-11-23 03:48:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:48:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-23 03:48:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:27,456 INFO L225 Difference]: With dead ends: 80 [2022-11-23 03:48:27,456 INFO L226 Difference]: Without dead ends: 67 [2022-11-23 03:48:27,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:48:27,457 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:27,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 97 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:48:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-23 03:48:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2022-11-23 03:48:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-23 03:48:27,487 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2022-11-23 03:48:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:27,487 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-23 03:48:27,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-23 03:48:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 03:48:27,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:27,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:27,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:27,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:27,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 923457379, now seen corresponding path program 2 times [2022-11-23 03:48:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:27,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970675132] [2022-11-23 03:48:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:27,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:27,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055392105] [2022-11-23 03:48:27,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:48:27,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:27,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:27,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:27,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:48:27,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:48:27,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:48:27,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 03:48:27,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:27,935 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 25 treesize of output 22 [2022-11-23 03:48:28,127 INFO L321 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-11-23 03:48:28,127 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 1 case distinctions, treesize of input 37 treesize of output 36 [2022-11-23 03:48:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:48:28,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:48:29,083 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 38 treesize of output 36 [2022-11-23 03:48:29,094 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 103 treesize of output 101 [2022-11-23 03:48:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:29,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:29,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970675132] [2022-11-23 03:48:29,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:29,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055392105] [2022-11-23 03:48:29,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055392105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:48:29,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:48:29,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-23 03:48:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154723405] [2022-11-23 03:48:29,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:48:29,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 03:48:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:29,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 03:48:29,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-11-23 03:48:29,483 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 28 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 03:48:33,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:48:40,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:40,342 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2022-11-23 03:48:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-23 03:48:40,342 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-11-23 03:48:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:40,344 INFO L225 Difference]: With dead ends: 151 [2022-11-23 03:48:40,344 INFO L226 Difference]: Without dead ends: 149 [2022-11-23 03:48:40,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1085, Invalid=5557, Unknown=0, NotChecked=0, Total=6642 [2022-11-23 03:48:40,348 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 249 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 119 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:40,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 143 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 488 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 03:48:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-23 03:48:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 66. [2022-11-23 03:48:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2022-11-23 03:48:40,434 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 26 [2022-11-23 03:48:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:40,435 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2022-11-23 03:48:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 03:48:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2022-11-23 03:48:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 03:48:40,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:40,437 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] [2022-11-23 03:48:40,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 03:48:40,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -789350489, now seen corresponding path program 2 times [2022-11-23 03:48:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892242200] [2022-11-23 03:48:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:40,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:40,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311598388] [2022-11-23 03:48:40,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:48:40,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:40,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:40,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:48:40,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:48:40,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:48:40,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-23 03:48:40,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:40,867 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 21 treesize of output 17 [2022-11-23 03:48:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:48:41,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:48:41,902 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 72 treesize of output 68 [2022-11-23 03:48:41,919 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:48:41,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 94 [2022-11-23 03:48:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:48:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892242200] [2022-11-23 03:48:43,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311598388] [2022-11-23 03:48:43,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311598388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:48:43,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:48:43,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2022-11-23 03:48:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192270053] [2022-11-23 03:48:43,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:48:43,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 03:48:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 03:48:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2022-11-23 03:48:43,918 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 29 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 03:48:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:54,355 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2022-11-23 03:48:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-23 03:48:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-11-23 03:48:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:54,357 INFO L225 Difference]: With dead ends: 140 [2022-11-23 03:48:54,358 INFO L226 Difference]: Without dead ends: 138 [2022-11-23 03:48:54,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=499, Invalid=2581, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 03:48:54,360 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 232 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:54,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 215 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 03:48:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-23 03:48:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 69. [2022-11-23 03:48:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-11-23 03:48:54,426 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 26 [2022-11-23 03:48:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-11-23 03:48:54,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 03:48:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-11-23 03:48:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 03:48:54,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:54,428 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] [2022-11-23 03:48:54,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 03:48:54,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1681074929, now seen corresponding path program 1 times [2022-11-23 03:48:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:54,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210114771] [2022-11-23 03:48:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:54,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819129175] [2022-11-23 03:48:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:54,656 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:54,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:48:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:54,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:48:54,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:48:54,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:48:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:48:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210114771] [2022-11-23 03:48:54,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:48:54,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819129175] [2022-11-23 03:48:54,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819129175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:48:54,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:48:54,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-23 03:48:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53892443] [2022-11-23 03:48:54,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:48:54,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:48:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:48:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:48:54,909 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:48:55,175 INFO L93 Difference]: Finished difference Result 138 states and 170 transitions. [2022-11-23 03:48:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:48:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-23 03:48:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:48:55,178 INFO L225 Difference]: With dead ends: 138 [2022-11-23 03:48:55,178 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 03:48:55,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:48:55,181 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 51 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:48:55,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:48:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 03:48:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 72. [2022-11-23 03:48:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:48:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2022-11-23 03:48:55,258 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 28 [2022-11-23 03:48:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:48:55,259 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2022-11-23 03:48:55,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:48:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2022-11-23 03:48:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 03:48:55,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:48:55,261 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:55,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:48:55,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:55,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:48:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash 777979813, now seen corresponding path program 3 times [2022-11-23 03:48:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:55,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856753356] [2022-11-23 03:48:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:55,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:48:55,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205718861] [2022-11-23 03:48:55,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:48:55,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:55,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:55,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:55,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:48:55,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 03:48:55,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:48:55,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-23 03:48:55,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:55,750 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 19 treesize of output 15 [2022-11-23 03:48:55,795 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 23 treesize of output 22 [2022-11-23 03:48:55,928 INFO L321 Elim1Store]: treesize reduction 52, result has 44.1 percent of original size [2022-11-23 03:48:55,928 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 44 treesize of output 71 [2022-11-23 03:48:56,143 INFO L321 Elim1Store]: treesize reduction 101, result has 34.8 percent of original size [2022-11-23 03:48:56,144 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 108 treesize of output 150 [2022-11-23 03:48:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:48:58,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:49:03,547 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 85 treesize of output 83 [2022-11-23 03:49:03,560 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 4606 treesize of output 4590 [2022-11-23 03:49:46,785 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification. DAG size of input: 83 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:49:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:49:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:49:53,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856753356] [2022-11-23 03:49:53,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:49:53,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205718861] [2022-11-23 03:49:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205718861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:49:53,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:49:53,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-23 03:49:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702162249] [2022-11-23 03:49:53,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:49:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 03:49:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:49:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 03:49:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=797, Unknown=1, NotChecked=0, Total=930 [2022-11-23 03:49:53,129 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 31 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 03:49:58,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:50:25,308 WARN L233 SmtUtils]: Spent 21.58s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:50:28,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:50:30,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:50:33,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:50:36,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:50:38,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:50:40,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:50:42,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:51:18,385 WARN L233 SmtUtils]: Spent 29.74s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:51:21,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:51:31,968 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 142 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:51:37,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:51:39,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:51:41,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:52:44,923 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 186 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:52:48,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:53:05,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:53:28,520 WARN L233 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:53:31,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:53:33,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:53:35,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:54:09,248 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:54:34,164 WARN L233 SmtUtils]: Spent 15.72s on a formula simplification that was a NOOP. DAG size: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:54:36,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:54:39,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:54:41,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:54:43,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:54:45,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:54:47,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:55:08,469 WARN L233 SmtUtils]: Spent 14.21s on a formula simplification. DAG size of input: 184 DAG size of output: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:55:10,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:55:39,453 WARN L233 SmtUtils]: Spent 15.65s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:55:56,108 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:55:59,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:56:01,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:56:26,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:56:32,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:57:15,652 WARN L233 SmtUtils]: Spent 34.75s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:57:27,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:57:29,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:57:42,520 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 238 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:57:46,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:57:49,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 03:58:12,324 WARN L233 SmtUtils]: Spent 19.02s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:58:53,770 WARN L233 SmtUtils]: Spent 12.78s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:59:02,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2022-11-23 03:59:04,204 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|))) (let ((.cse4 (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296)) (.cse12 (* |c_ULTIMATE.start_main_~C~0#1| (- 4))) (.cse16 (= (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4)) (+ |c_ULTIMATE.start_main_~C~0#1| 1))) (.cse11 (= |c_ULTIMATE.start_main_~C~0#1| (select .cse0 |c_ULTIMATE.start_main_~#A~0#1.offset|))) (.cse3 (* |c_ULTIMATE.start_main_~n~0#1| 4))) (and (= |c_ULTIMATE.start_main_~n~0#1| 1500) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (or (< |ULTIMATE.start_main_~i~0#1| 0) (< (+ 2 |ULTIMATE.start_main_~j~0#1|) |c_ULTIMATE.start_main_~s~0#1|) (= (mod (select (let ((.cse1 (* |ULTIMATE.start_main_~j~0#1| 4)) (.cse2 (* |ULTIMATE.start_main_~i~0#1| .cse3))) (store (store .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse1 .cse2) (+ |c_ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4 .cse1 .cse2) (+ |c_ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 1))) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296) .cse4))) (or (not (< |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_40| Int) (|v_ULTIMATE.start_main_~j~0#1_60| Int)) (or (= .cse4 (mod (select (let ((.cse5 (* |v_ULTIMATE.start_main_~i~0#1_40| .cse3)) (.cse6 (* |v_ULTIMATE.start_main_~j~0#1_60| 4))) (store (store (store .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* .cse3 |c_ULTIMATE.start_main_~i~0#1|) (* |c_ULTIMATE.start_main_~j~0#1| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse6) (+ |v_ULTIMATE.start_main_~i~0#1_40| |c_ULTIMATE.start_main_~C~0#1| |v_ULTIMATE.start_main_~j~0#1_60|)) (+ .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse6 4) (+ |v_ULTIMATE.start_main_~i~0#1_40| |c_ULTIMATE.start_main_~C~0#1| |v_ULTIMATE.start_main_~j~0#1_60| 1))) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296)) (< |v_ULTIMATE.start_main_~i~0#1_40| 0) (< (+ |v_ULTIMATE.start_main_~j~0#1_60| 2) |c_ULTIMATE.start_main_~s~0#1|)))) (or (and (or (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse8 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse9 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse7 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|)) (.cse10 (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))) (and (<= (+ .cse7 1) 0) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse8 .cse9 (- 4))) .cse7 1) .cse10) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse8 .cse9)) .cse7) .cse10)))) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int) (v_arrayElimCell_14 Int)) (let ((.cse13 (* |v_ULTIMATE.start_main_~i~0#1_36| (- 4))) (.cse14 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse15 (* 4 v_arrayElimCell_14))) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|) v_arrayElimCell_14) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (select .cse0 (+ .cse12 .cse13 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse14 .cse15)) v_arrayElimCell_14) (= (+ v_arrayElimCell_14 1) (select .cse0 (+ .cse12 .cse13 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse14 .cse15 4)))))))) .cse16) (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse18 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse19 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse17 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (<= .cse17 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse18 .cse19 4)) .cse17) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse18 .cse19)) .cse17) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))))) (and (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse20 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse21 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse22 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse20 .cse21 4)) .cse22) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 2) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse20 .cse21 8)) .cse22)) (<= .cse22 1)))) .cse11)) (or (and (or (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse24 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse25 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse23 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|)) (.cse26 (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))) (and (<= (+ .cse23 1) 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse24 .cse25 (- 4))) .cse23 1) .cse26) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse24 .cse25)) .cse23) .cse26)))) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int) (v_arrayElimCell_14 Int)) (let ((.cse27 (* |v_ULTIMATE.start_main_~i~0#1_36| (- 4))) (.cse28 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse29 (* 4 v_arrayElimCell_14))) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|) v_arrayElimCell_14) (= (select .cse0 (+ .cse12 .cse27 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse28 .cse29)) v_arrayElimCell_14) (= (+ v_arrayElimCell_14 1) (select .cse0 (+ .cse12 .cse27 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse28 .cse29 4))) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1))))))) .cse16) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse30 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse31 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse32 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse30 .cse31 4)) .cse32) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 2) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse30 .cse31 8)) .cse32)) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (<= .cse32 1))))) (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse34 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse35 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse33 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= .cse33 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse34 .cse35 4)) .cse33) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse34 .cse35)) .cse33) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))))))))) is different from true [2022-11-23 03:59:29,340 WARN L233 SmtUtils]: Spent 22.43s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 03:59:31,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:59:34,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-23 03:59:47,735 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 235 DAG size of output: 99 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:00:12,706 WARN L233 SmtUtils]: Spent 17.13s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:00:14,994 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|))) (let ((.cse4 (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296)) (.cse12 (* |c_ULTIMATE.start_main_~C~0#1| (- 4))) (.cse16 (= (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4)) (+ |c_ULTIMATE.start_main_~C~0#1| 1))) (.cse11 (= |c_ULTIMATE.start_main_~C~0#1| (select .cse0 |c_ULTIMATE.start_main_~#A~0#1.offset|))) (.cse3 (* |c_ULTIMATE.start_main_~n~0#1| 4))) (and (= |c_ULTIMATE.start_main_~n~0#1| 1500) (forall ((|ULTIMATE.start_main_~j~0#1| Int) (|ULTIMATE.start_main_~i~0#1| Int)) (or (< |ULTIMATE.start_main_~i~0#1| 0) (< (+ 2 |ULTIMATE.start_main_~j~0#1|) |c_ULTIMATE.start_main_~s~0#1|) (= (mod (select (let ((.cse1 (* |ULTIMATE.start_main_~j~0#1| 4)) (.cse2 (* |ULTIMATE.start_main_~i~0#1| .cse3))) (store (store .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse1 .cse2) (+ |c_ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4 .cse1 .cse2) (+ |c_ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 1))) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296) .cse4))) (or (not (< |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_40| Int) (|v_ULTIMATE.start_main_~j~0#1_60| Int)) (or (= .cse4 (mod (select (let ((.cse5 (* |v_ULTIMATE.start_main_~i~0#1_40| .cse3)) (.cse6 (* |v_ULTIMATE.start_main_~j~0#1_60| 4))) (store (store (store .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* .cse3 |c_ULTIMATE.start_main_~i~0#1|) (* |c_ULTIMATE.start_main_~j~0#1| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse6) (+ |v_ULTIMATE.start_main_~i~0#1_40| |c_ULTIMATE.start_main_~C~0#1| |v_ULTIMATE.start_main_~j~0#1_60|)) (+ .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse6 4) (+ |v_ULTIMATE.start_main_~i~0#1_40| |c_ULTIMATE.start_main_~C~0#1| |v_ULTIMATE.start_main_~j~0#1_60| 1))) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296)) (< |v_ULTIMATE.start_main_~i~0#1_40| 0) (< (+ |v_ULTIMATE.start_main_~j~0#1_60| 2) |c_ULTIMATE.start_main_~s~0#1|)))) (or (and (or (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse8 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse9 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse7 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|)) (.cse10 (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))) (and (<= (+ .cse7 1) 0) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse8 .cse9 (- 4))) .cse7 1) .cse10) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse8 .cse9)) .cse7) .cse10)))) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int) (v_arrayElimCell_14 Int)) (let ((.cse13 (* |v_ULTIMATE.start_main_~i~0#1_36| (- 4))) (.cse14 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse15 (* 4 v_arrayElimCell_14))) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|) v_arrayElimCell_14) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (select .cse0 (+ .cse12 .cse13 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse14 .cse15)) v_arrayElimCell_14) (= (+ v_arrayElimCell_14 1) (select .cse0 (+ .cse12 .cse13 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse14 .cse15 4)))))))) .cse16) (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse18 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse19 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse17 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (<= .cse17 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse18 .cse19 4)) .cse17) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse18 .cse19)) .cse17) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))))) (and (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse20 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse21 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse22 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse20 .cse21 4)) .cse22) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 2) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse20 .cse21 8)) .cse22)) (<= .cse22 1)))) .cse11)) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or (and (or (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse24 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse25 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse23 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|)) (.cse26 (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))) (and (<= (+ .cse23 1) 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse24 .cse25 (- 4))) .cse23 1) .cse26) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse24 .cse25)) .cse23) .cse26)))) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int) (v_arrayElimCell_14 Int)) (let ((.cse27 (* |v_ULTIMATE.start_main_~i~0#1_36| (- 4))) (.cse28 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse29 (* 4 v_arrayElimCell_14))) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|) v_arrayElimCell_14) (= (select .cse0 (+ .cse12 .cse27 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse28 .cse29)) v_arrayElimCell_14) (= (+ v_arrayElimCell_14 1) (select .cse0 (+ .cse12 .cse27 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse28 .cse29 4))) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1))))))) .cse16) (and .cse11 (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse30 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse31 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse32 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse30 .cse31 4)) .cse32) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (= (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 2) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse30 .cse31 8)) .cse32)) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (<= .cse32 1))))) (exists ((|v_ULTIMATE.start_main_~i~0#1_36| Int)) (let ((.cse34 (* (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36| (- 1)) 4)) (.cse35 (* |v_ULTIMATE.start_main_~i~0#1_36| .cse3)) (.cse33 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~i~0#1_36|))) (and (<= .cse33 0) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse34 .cse35 4)) .cse33) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1| 1)) (<= |c_ULTIMATE.start_main_~q~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_36| 1)) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse34 .cse35)) .cse33) (+ |v_ULTIMATE.start_main_~i~0#1_36| |c_ULTIMATE.start_main_~C~0#1|))))))))) is different from true [2022-11-23 04:00:41,474 WARN L233 SmtUtils]: Spent 20.16s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:00:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:00:41,535 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2022-11-23 04:00:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-23 04:00:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-11-23 04:00:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:00:41,538 INFO L225 Difference]: With dead ends: 197 [2022-11-23 04:00:41,538 INFO L226 Difference]: Without dead ends: 195 [2022-11-23 04:00:41,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3016 ImplicationChecksByTransitivity, 587.5s TimeCoverageRelationStatistics Valid=1911, Invalid=8553, Unknown=50, NotChecked=406, Total=10920 [2022-11-23 04:00:41,543 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 384 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 146 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 83.4s IncrementalHoareTripleChecker+Time [2022-11-23 04:00:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 207 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 685 Invalid, 31 Unknown, 2 Unchecked, 83.4s Time] [2022-11-23 04:00:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-23 04:00:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 92. [2022-11-23 04:00:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 88 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 04:00:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2022-11-23 04:00:41,642 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 28 [2022-11-23 04:00:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:41,642 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2022-11-23 04:00:41,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 04:00:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2022-11-23 04:00:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 04:00:41,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:41,644 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:00:41,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 04:00:41,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 04:00:41,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash -589628086, now seen corresponding path program 3 times [2022-11-23 04:00:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:41,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495620913] [2022-11-23 04:00:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:41,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:41,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:00:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511150437] [2022-11-23 04:00:41,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 04:00:41,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:00:41,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:00:41,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:00:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 04:00:41,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 04:00:41,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:00:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:00:41,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:00:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 04:00:42,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:00:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 04:00:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495620913] [2022-11-23 04:00:42,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:00:42,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511150437] [2022-11-23 04:00:42,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511150437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:00:42,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:00:42,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-23 04:00:42,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341137499] [2022-11-23 04:00:42,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:00:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 04:00:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 04:00:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-23 04:00:42,141 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 04:00:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:00:42,527 INFO L93 Difference]: Finished difference Result 202 states and 252 transitions. [2022-11-23 04:00:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 04:00:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-23 04:00:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:00:42,529 INFO L225 Difference]: With dead ends: 202 [2022-11-23 04:00:42,529 INFO L226 Difference]: Without dead ends: 154 [2022-11-23 04:00:42,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-23 04:00:42,531 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 146 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:00:42,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 123 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 04:00:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-23 04:00:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 117. [2022-11-23 04:00:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3008849557522124) internal successors, (147), 113 states have internal predecessors, (147), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 04:00:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 151 transitions. [2022-11-23 04:00:42,628 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 151 transitions. Word has length 29 [2022-11-23 04:00:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:42,628 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 151 transitions. [2022-11-23 04:00:42,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 04:00:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 151 transitions. [2022-11-23 04:00:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 04:00:42,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:42,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:00:42,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 04:00:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:00:42,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 439948756, now seen corresponding path program 4 times [2022-11-23 04:00:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120503381] [2022-11-23 04:00:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:42,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:00:42,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628099597] [2022-11-23 04:00:42,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 04:00:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:00:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:00:42,846 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:00:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 04:00:42,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 04:00:42,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:00:42,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 04:00:42,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:00:43,021 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 15 treesize of output 11 [2022-11-23 04:00:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 04:00:43,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:00:44,722 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 124 treesize of output 118 [2022-11-23 04:00:44,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 04:00:44,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 151 [2022-11-23 04:00:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 04:00:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120503381] [2022-11-23 04:00:54,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:00:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628099597] [2022-11-23 04:00:54,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628099597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:00:54,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:00:54,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-23 04:00:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766477102] [2022-11-23 04:00:54,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:00:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 04:00:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 04:00:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-11-23 04:00:54,106 INFO L87 Difference]: Start difference. First operand 117 states and 151 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 04:01:06,763 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 87 DAG size of output: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:01:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:14,492 INFO L93 Difference]: Finished difference Result 163 states and 203 transitions. [2022-11-23 04:01:14,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 04:01:14,492 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-23 04:01:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:14,494 INFO L225 Difference]: With dead ends: 163 [2022-11-23 04:01:14,494 INFO L226 Difference]: Without dead ends: 161 [2022-11-23 04:01:14,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=366, Invalid=1985, Unknown=1, NotChecked=0, Total=2352 [2022-11-23 04:01:14,498 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 136 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:14,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 265 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 04:01:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-23 04:01:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 120. [2022-11-23 04:01:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.293103448275862) internal successors, (150), 116 states have internal predecessors, (150), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 04:01:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2022-11-23 04:01:14,613 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 30 [2022-11-23 04:01:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:01:14,614 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2022-11-23 04:01:14,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 04:01:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2022-11-23 04:01:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 04:01:14,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:01:14,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:01:14,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 04:01:14,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:01:14,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:01:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:01:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1356140704, now seen corresponding path program 2 times [2022-11-23 04:01:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:01:14,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026429865] [2022-11-23 04:01:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:01:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:01:14,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:01:14,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587511796] [2022-11-23 04:01:14,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:01:14,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:01:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:01:14,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:01:14,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 04:01:14,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:01:14,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:01:14,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 04:01:14,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:01:15,114 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 19 treesize of output 15 [2022-11-23 04:01:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:01:15,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:01:16,062 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 32 treesize of output 30 [2022-11-23 04:01:16,069 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 50 treesize of output 44 [2022-11-23 04:01:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:01:18,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:01:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026429865] [2022-11-23 04:01:18,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:01:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587511796] [2022-11-23 04:01:18,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587511796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:01:18,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:01:18,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2022-11-23 04:01:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430676822] [2022-11-23 04:01:18,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:01:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 04:01:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:01:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 04:01:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 04:01:18,164 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 04:01:35,142 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 85 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 04:01:53,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 04:01:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:54,457 INFO L93 Difference]: Finished difference Result 311 states and 388 transitions. [2022-11-23 04:01:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-23 04:01:54,457 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2022-11-23 04:01:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:54,459 INFO L225 Difference]: With dead ends: 311 [2022-11-23 04:01:54,459 INFO L226 Difference]: Without dead ends: 309 [2022-11-23 04:01:54,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2899 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=1568, Invalid=7744, Unknown=0, NotChecked=0, Total=9312 [2022-11-23 04:01:54,462 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 370 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:54,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 207 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 04:01:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-23 04:01:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 167. [2022-11-23 04:01:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.2638036809815951) internal successors, (206), 163 states have internal predecessors, (206), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 04:01:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 210 transitions. [2022-11-23 04:01:54,751 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 210 transitions. Word has length 32 [2022-11-23 04:01:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:01:54,751 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 210 transitions. [2022-11-23 04:01:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 04:01:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 210 transitions. [2022-11-23 04:01:54,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 04:01:54,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:01:54,755 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:01:54,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 04:01:54,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 04:01:54,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:01:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:01:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1539013667, now seen corresponding path program 4 times [2022-11-23 04:01:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:01:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406142885] [2022-11-23 04:01:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:01:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:01:54,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:01:54,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095102833] [2022-11-23 04:01:54,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 04:01:54,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:01:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:01:54,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:01:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 04:01:55,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 04:01:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:01:55,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 04:01:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:01:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 04:01:55,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:01:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 04:01:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:01:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406142885] [2022-11-23 04:01:55,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 04:01:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095102833] [2022-11-23 04:01:55,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095102833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:01:55,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 04:01:55,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-23 04:01:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8890742] [2022-11-23 04:01:55,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 04:01:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 04:01:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:01:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 04:01:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-23 04:01:55,225 INFO L87 Difference]: Start difference. First operand 167 states and 210 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 04:01:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:55,964 INFO L93 Difference]: Finished difference Result 378 states and 473 transitions. [2022-11-23 04:01:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 04:01:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-11-23 04:01:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:55,966 INFO L225 Difference]: With dead ends: 378 [2022-11-23 04:01:55,966 INFO L226 Difference]: Without dead ends: 282 [2022-11-23 04:01:55,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2022-11-23 04:01:55,967 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 248 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:55,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 179 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 04:01:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-23 04:01:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 218. [2022-11-23 04:01:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 214 states have (on average 1.2990654205607477) internal successors, (278), 214 states have internal predecessors, (278), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 04:01:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 282 transitions. [2022-11-23 04:01:56,218 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 282 transitions. Word has length 32 [2022-11-23 04:01:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:01:56,218 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 282 transitions. [2022-11-23 04:01:56,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 04:01:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 282 transitions. [2022-11-23 04:01:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 04:01:56,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:01:56,219 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:01:56,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 04:01:56,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 04:01:56,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:01:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:01:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash -496996534, now seen corresponding path program 5 times [2022-11-23 04:01:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:01:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078610587] [2022-11-23 04:01:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:01:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:01:56,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 04:01:56,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069380401] [2022-11-23 04:01:56,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 04:01:56,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:01:56,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:01:56,431 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:01:56,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd207211-78a5-4872-84ca-e19a58a110dd/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 04:01:56,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-23 04:01:56,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:01:56,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-23 04:01:56,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:01:56,633 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 25 treesize of output 22 [2022-11-23 04:01:56,672 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 43 [2022-11-23 04:01:56,864 INFO L321 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2022-11-23 04:01:56,864 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 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 04:01:56,935 INFO L321 Elim1Store]: treesize reduction 46, result has 23.3 percent of original size [2022-11-23 04:01:56,936 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 1 case distinctions, treesize of input 33 treesize of output 32 [2022-11-23 04:01:57,185 INFO L321 Elim1Store]: treesize reduction 50, result has 21.9 percent of original size [2022-11-23 04:01:57,186 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 1 case distinctions, treesize of input 35 treesize of output 34 [2022-11-23 04:01:57,271 INFO L321 Elim1Store]: treesize reduction 50, result has 21.9 percent of original size [2022-11-23 04:01:57,271 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 1 case distinctions, treesize of input 35 treesize of output 34 [2022-11-23 04:01:57,495 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-23 04:01:57,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2022-11-23 04:01:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 04:01:57,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:02:48,622 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 83 treesize of output 81 [2022-11-23 04:02:48,667 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 7898542 treesize of output 7890350 [2022-11-23 04:03:10,711 WARN L233 SmtUtils]: Spent 22.04s on a formula simplification that was a NOOP. DAG size: 2107 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)