./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/poly1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/poly1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 3116e607f032f81b099fa1792f5e25b70e1832d9d57f1b8b6500e90d2143faec --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:05:45,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:05:45,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:05:45,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:05:45,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:05:45,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:05:45,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:05:45,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:05:45,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:05:45,904 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:05:45,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:05:45,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:05:45,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:05:45,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:05:45,907 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:05:45,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:05:45,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:05:45,908 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:05:45,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:05:45,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:05:45,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:05:45,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:05:45,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:05:45,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:05:45,914 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:05:45,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:05:45,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:05:45,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:05:45,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:05:45,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:05:45,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:05:45,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:45,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:05:45,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:05:45,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:05:45,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:05:45,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:05:45,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:05:45,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:05:45,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:05:45,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:05:45,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:05:45,919 INFO L153 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_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3116e607f032f81b099fa1792f5e25b70e1832d9d57f1b8b6500e90d2143faec [2023-11-29 01:05:46,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:05:46,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:05:46,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:05:46,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:05:46,178 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:05:46,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-tiling/poly1.c [2023-11-29 01:05:48,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:05:49,066 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:05:49,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/sv-benchmarks/c/array-tiling/poly1.c [2023-11-29 01:05:49,073 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/data/c129b79f1/2f944cc4f33345209166bf057649709a/FLAG005f53e56 [2023-11-29 01:05:49,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/data/c129b79f1/2f944cc4f33345209166bf057649709a [2023-11-29 01:05:49,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:05:49,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:05:49,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:49,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:05:49,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:05:49,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e60b8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49, skipping insertion in model container [2023-11-29 01:05:49,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:05:49,261 WARN L240 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_1028ef23-c589-40a4-87c2-67d9002cda5f/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2023-11-29 01:05:49,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:49,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:05:49,300 WARN L240 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_1028ef23-c589-40a4-87c2-67d9002cda5f/sv-benchmarks/c/array-tiling/poly1.c[396,409] [2023-11-29 01:05:49,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:49,319 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:05:49,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49 WrapperNode [2023-11-29 01:05:49,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:49,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:49,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:05:49,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:05:49,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,353 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-11-29 01:05:49,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:49,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:05:49,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:05:49,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:05:49,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,383 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 8, 2]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-29 01:05:49,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:05:49,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:05:49,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:05:49,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:05:49,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (1/1) ... [2023-11-29 01:05:49,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:49,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:49,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:05:49,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:05:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:05:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:05:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:05:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:05:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:05:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:05:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:05:49,539 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:05:49,541 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:05:49,661 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:05:49,686 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:05:49,687 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:05:49,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:49 BoogieIcfgContainer [2023-11-29 01:05:49,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:05:49,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:05:49,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:05:49,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:05:49,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:05:49" (1/3) ... [2023-11-29 01:05:49,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53401dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:49, skipping insertion in model container [2023-11-29 01:05:49,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:49" (2/3) ... [2023-11-29 01:05:49,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53401dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:49, skipping insertion in model container [2023-11-29 01:05:49,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:49" (3/3) ... [2023-11-29 01:05:49,697 INFO L112 eAbstractionObserver]: Analyzing ICFG poly1.c [2023-11-29 01:05:49,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:05:49,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:05:49,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:05:49,771 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=LoopHeads, 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;@66aa8494, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:05:49,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:05:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:05:49,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:49,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:49,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:49,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:49,788 INFO L85 PathProgramCache]: Analyzing trace with hash 807800041, now seen corresponding path program 1 times [2023-11-29 01:05:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493999323] [2023-11-29 01:05:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493999323] [2023-11-29 01:05:49,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:05:49,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640234804] [2023-11-29 01:05:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:49,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:49,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:05:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:05:50,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:50,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:05:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640234804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:50,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:50,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:05:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271696852] [2023-11-29 01:05:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:05:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:05:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:05:50,080 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:50,100 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2023-11-29 01:05:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:05:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:05:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:50,108 INFO L225 Difference]: With dead ends: 21 [2023-11-29 01:05:50,108 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 01:05:50,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:05:50,115 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:50,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:05:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 01:05:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-29 01:05:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-29 01:05:50,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2023-11-29 01:05:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:50,143 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-29 01:05:50,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-29 01:05:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:05:50,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:50,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:50,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:05:50,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:05:50,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:50,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash 802258915, now seen corresponding path program 1 times [2023-11-29 01:05:50,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428051096] [2023-11-29 01:05:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428051096] [2023-11-29 01:05:50,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:05:50,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043146182] [2023-11-29 01:05:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:50,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:50,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:50,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:50,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:05:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:05:50,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:50,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:05:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043146182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479286124] [2023-11-29 01:05:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:50,509 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:50,525 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-29 01:05:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:05:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:50,526 INFO L225 Difference]: With dead ends: 16 [2023-11-29 01:05:50,526 INFO L226 Difference]: Without dead ends: 10 [2023-11-29 01:05:50,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:50,528 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:50,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:05:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-29 01:05:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-29 01:05:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-11-29 01:05:50,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2023-11-29 01:05:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:50,533 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-11-29 01:05:50,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-11-29 01:05:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:05:50,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:50,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:50,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:05:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:50,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 352275824, now seen corresponding path program 1 times [2023-11-29 01:05:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425510153] [2023-11-29 01:05:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:50,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138295319] [2023-11-29 01:05:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:50,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:50,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:50,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:05:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:05:50,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:50,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:50,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425510153] [2023-11-29 01:05:50,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138295319] [2023-11-29 01:05:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138295319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:50,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 01:05:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069658375] [2023-11-29 01:05:50,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:50,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:05:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:05:50,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:05:50,883 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:50,909 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2023-11-29 01:05:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:05:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 01:05:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:50,910 INFO L225 Difference]: With dead ends: 17 [2023-11-29 01:05:50,910 INFO L226 Difference]: Without dead ends: 11 [2023-11-29 01:05:50,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:05:50,912 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:50,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:05:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-29 01:05:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-29 01:05:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-29 01:05:50,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2023-11-29 01:05:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:50,917 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-29 01:05:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-29 01:05:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:05:50,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:50,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:50,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:05:51,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:51,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -712298109, now seen corresponding path program 2 times [2023-11-29 01:05:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545881417] [2023-11-29 01:05:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:51,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:51,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355593824] [2023-11-29 01:05:51,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:05:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:51,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:51,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:05:51,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:05:51,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:05:51,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:05:51,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:51,246 INFO L378 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 [2023-11-29 01:05:51,269 INFO L378 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 27 treesize of output 11 [2023-11-29 01:05:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:51,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:51,578 INFO L378 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 48 treesize of output 44 [2023-11-29 01:05:51,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:51,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:05:51,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:51,808 INFO L378 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 176 treesize of output 170 [2023-11-29 01:05:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:51,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:51,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545881417] [2023-11-29 01:05:51,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:51,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355593824] [2023-11-29 01:05:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355593824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:51,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:51,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 01:05:51,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625330779] [2023-11-29 01:05:51,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:51,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:05:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:05:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:05:51,895 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:52,121 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-29 01:05:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:05:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 01:05:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:52,123 INFO L225 Difference]: With dead ends: 40 [2023-11-29 01:05:52,123 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 01:05:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:05:52,124 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:05:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 01:05:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 16. [2023-11-29 01:05:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-11-29 01:05:52,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-11-29 01:05:52,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:52,131 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-11-29 01:05:52,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-11-29 01:05:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 01:05:52,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:52,132 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:52,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:05:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:52,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:52,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash -207684829, now seen corresponding path program 3 times [2023-11-29 01:05:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:52,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052766714] [2023-11-29 01:05:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:52,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:52,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085716456] [2023-11-29 01:05:52,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:05:52,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:52,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:52,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:52,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:05:52,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:05:52,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:05:52,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:05:52,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:52,488 INFO L378 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 [2023-11-29 01:05:52,507 INFO L378 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 27 treesize of output 11 [2023-11-29 01:05:52,530 INFO L378 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 27 treesize of output 11 [2023-11-29 01:05:52,549 INFO L378 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 27 treesize of output 11 [2023-11-29 01:05:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:52,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:53,564 INFO L378 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 48 treesize of output 44 [2023-11-29 01:05:53,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:53,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:05:54,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:54,263 INFO L378 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 3731 treesize of output 3672 [2023-11-29 01:05:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052766714] [2023-11-29 01:05:54,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085716456] [2023-11-29 01:05:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085716456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:54,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:54,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:05:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072312042] [2023-11-29 01:05:54,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:54,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:05:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:05:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:05:54,738 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:55,593 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2023-11-29 01:05:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:05:55,593 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-29 01:05:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:55,596 INFO L225 Difference]: With dead ends: 70 [2023-11-29 01:05:55,596 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 01:05:55,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:05:55,597 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:55,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 79 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:05:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 01:05:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 20. [2023-11-29 01:05:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-11-29 01:05:55,607 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 11 [2023-11-29 01:05:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:55,608 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-11-29 01:05:55,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-11-29 01:05:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 01:05:55,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:55,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:55,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:05:55,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:55,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:55,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1365744233, now seen corresponding path program 1 times [2023-11-29 01:05:55,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:55,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625161374] [2023-11-29 01:05:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:55,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:55,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840498728] [2023-11-29 01:05:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:55,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:55,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:55,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:55,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:05:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:55,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:05:55,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:55,914 INFO L378 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 13 treesize of output 9 [2023-11-29 01:05:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:56,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:56,257 INFO L378 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 48 treesize of output 44 [2023-11-29 01:05:56,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:56,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:05:56,337 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-11-29 01:05:56,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 55 [2023-11-29 01:05:56,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:56,369 INFO L378 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 42 treesize of output 29 [2023-11-29 01:05:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625161374] [2023-11-29 01:05:56,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840498728] [2023-11-29 01:05:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840498728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:56,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 01:05:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066582221] [2023-11-29 01:05:56,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:05:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:05:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:56,424 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:57,305 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2023-11-29 01:05:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:05:57,305 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 01:05:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:57,306 INFO L225 Difference]: With dead ends: 68 [2023-11-29 01:05:57,306 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 01:05:57,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:05:57,308 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:57,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 72 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:05:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 01:05:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 31. [2023-11-29 01:05:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 01:05:57,318 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 12 [2023-11-29 01:05:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:57,318 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 01:05:57,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 01:05:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:05:57,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:57,320 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:57,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:05:57,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:05:57,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:57,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1914432713, now seen corresponding path program 2 times [2023-11-29 01:05:57,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:57,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913228657] [2023-11-29 01:05:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:57,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:57,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139126310] [2023-11-29 01:05:57,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:05:57,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:57,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:57,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:05:57,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:05:57,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:05:57,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:05:57,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:57,679 INFO L378 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 13 treesize of output 9 [2023-11-29 01:05:57,696 INFO L378 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 29 treesize of output 13 [2023-11-29 01:05:57,711 INFO L378 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 29 treesize of output 13 [2023-11-29 01:05:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:57,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:58,240 INFO L378 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 48 treesize of output 44 [2023-11-29 01:05:58,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:58,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:05:58,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:05:58,569 INFO L378 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 1537 treesize of output 1476 [2023-11-29 01:05:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913228657] [2023-11-29 01:05:58,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139126310] [2023-11-29 01:05:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139126310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:58,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-11-29 01:05:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684505047] [2023-11-29 01:05:58,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:58,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:05:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:05:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:05:58,773 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:59,251 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2023-11-29 01:05:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:05:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 01:05:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:59,252 INFO L225 Difference]: With dead ends: 84 [2023-11-29 01:05:59,252 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 01:05:59,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:05:59,253 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:59,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 103 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:05:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 01:05:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 31. [2023-11-29 01:05:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 01:05:59,266 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2023-11-29 01:05:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:59,267 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 01:05:59,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 01:05:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:05:59,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:59,267 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:59,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:05:59,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:05:59,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:59,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash -776153501, now seen corresponding path program 4 times [2023-11-29 01:05:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694994364] [2023-11-29 01:05:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:59,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:59,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006073254] [2023-11-29 01:05:59,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:05:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:59,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:59,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:59,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:06:00,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:06:00,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:06:00,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 01:06:00,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:00,052 INFO L378 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 [2023-11-29 01:06:00,063 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,075 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,087 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,105 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,119 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,137 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,155 INFO L378 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 27 treesize of output 11 [2023-11-29 01:06:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:00,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:21,889 INFO L378 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 48 treesize of output 44 [2023-11-29 01:06:21,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:06:21,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:06:32,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:06:32,179 INFO L378 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 45665310933 treesize of output 45648005068 [2023-11-29 01:06:38,954 WARN L293 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 29367 DAG size of output: 736 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:06:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:06:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694994364] [2023-11-29 01:06:45,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006073254] [2023-11-29 01:06:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006073254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:06:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-11-29 01:06:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796516057] [2023-11-29 01:06:45,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:06:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:06:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:06:45,590 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:46,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:06:50,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:06:56,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 01:07:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:13,558 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2023-11-29 01:07:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:07:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 01:07:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:13,559 INFO L225 Difference]: With dead ends: 142 [2023-11-29 01:07:13,559 INFO L226 Difference]: Without dead ends: 140 [2023-11-29 01:07:13,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:07:13,561 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:13,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 269 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-11-29 01:07:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-29 01:07:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 39. [2023-11-29 01:07:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-11-29 01:07:13,576 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 15 [2023-11-29 01:07:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:13,577 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-29 01:07:13,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2023-11-29 01:07:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:07:13,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:13,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:13,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:07:13,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:13,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:13,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash 108834896, now seen corresponding path program 3 times [2023-11-29 01:07:13,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862121104] [2023-11-29 01:07:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:13,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377686175] [2023-11-29 01:07:13,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:07:13,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:13,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:13,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:13,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:07:13,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:07:13,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:07:13,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:07:13,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:13,963 INFO L378 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 13 treesize of output 9 [2023-11-29 01:07:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:14,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:14,650 INFO L378 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 48 treesize of output 44 [2023-11-29 01:07:14,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:14,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:07:14,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:14,735 INFO L378 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 58 treesize of output 52 [2023-11-29 01:07:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:14,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862121104] [2023-11-29 01:07:14,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377686175] [2023-11-29 01:07:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377686175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:14,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:14,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 01:07:14,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423587592] [2023-11-29 01:07:14,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:07:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:07:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:07:14,903 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:19,392 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-29 01:07:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 01:07:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 01:07:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:19,393 INFO L225 Difference]: With dead ends: 103 [2023-11-29 01:07:19,393 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 01:07:19,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1230, Invalid=4622, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 01:07:19,397 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 170 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:19,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 113 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:07:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 01:07:19,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 47. [2023-11-29 01:07:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-11-29 01:07:19,424 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 16 [2023-11-29 01:07:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:19,425 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-11-29 01:07:19,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-11-29 01:07:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:07:19,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:19,426 INFO L195 NwaCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:19,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:07:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:19,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 813779004, now seen corresponding path program 4 times [2023-11-29 01:07:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:19,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626332017] [2023-11-29 01:07:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:19,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:19,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977529935] [2023-11-29 01:07:19,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:07:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:19,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:19,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:07:19,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:07:19,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:07:19,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 01:07:19,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:19,942 INFO L378 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 13 treesize of output 9 [2023-11-29 01:07:19,962 INFO L378 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 29 treesize of output 13 [2023-11-29 01:07:19,983 INFO L378 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 29 treesize of output 13 [2023-11-29 01:07:20,004 INFO L378 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 29 treesize of output 13 [2023-11-29 01:07:20,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 01:07:20,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:20,058 INFO L378 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 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-29 01:07:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:07:20,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:25,717 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse15 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse18 (* .cse16 8)) (.cse17 (* 8 .cse15))) (let ((.cse0 (< .cse15 2147483648)) (.cse4 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse2 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (< 2147483647 .cse16)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) 1)) (.cse9 (< .cse16 2147483648)) (.cse11 (< 2147483647 .cse15)) (.cse12 (* .cse13 8))) (and (or (let ((.cse3 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse0 (and (or (forall ((v_DerPreprocessor_58 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_58) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_DerPreprocessor_57 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse6) (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_57) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1))) .cse9))) (or (forall ((v_DerPreprocessor_56 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_56) .cse3 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse11))) (< .cse13 2147483648)) (or (< 2147483647 .cse13) (let ((.cse14 (+ .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_59) .cse14 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6)))) (or (and (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_61) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_60) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse9)) .cse11)))))))) is different from false [2023-11-29 01:07:30,330 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse24 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse19 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse23 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse17 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse20 (* .cse23 8)) (.cse21 (* 8 .cse19)) (.cse22 (* .cse24 8))) (let ((.cse8 (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse24 2147483648)) (.cse0 (< 2147483647 .cse24)) (.cse13 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (< .cse19 2147483648)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse20)) (.cse15 (< 2147483647 .cse23)) (.cse12 (< .cse23 2147483648)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (+ .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse20)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|) 4)) (.cse10 (< 2147483647 .cse19)) (.cse16 (* .cse17 8))) (and (or (let ((.cse2 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or (and (or .cse0 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_61) .cse4 v_prenex_386) .cse5 v_prenex_387) .cse6) 1) (< v_prenex_386 .cse7)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse7) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_60) .cse4 v_ArrVal_211) .cse5 v_DerPreprocessor_53) .cse6) 1))) .cse9)) .cse10) (or .cse11 (and (or .cse12 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_57) .cse13 v_prenex_391) .cse14 v_prenex_394) .cse6) 1) (< v_prenex_391 .cse7)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse7) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_56) .cse13 v_prenex_392) .cse5 v_prenex_393) .cse6) 1))) .cse15))))) (< .cse17 2147483648)) (or (< 2147483647 .cse17) (let ((.cse18 (+ .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse7) (= (select (store (store (store (store .cse1 .cse18 v_DerPreprocessor_62) .cse8 v_DerPreprocessor_57) .cse13 v_prenex_382) .cse14 v_prenex_385) .cse6) 1))) .cse9) (or .cse0 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse18 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_58) .cse13 v_prenex_380) .cse14 v_prenex_381) .cse6) 1) (< v_prenex_380 .cse7))))) .cse11) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse18 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_61) .cse4 v_prenex_377) .cse5 v_prenex_378) .cse6) 1) (< v_prenex_377 .cse7))) .cse15) (or .cse12 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse18 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_59) .cse4 v_prenex_379) .cse14 v_DerPreprocessor_54) .cse6) 1) (< v_prenex_379 .cse7))))) .cse10)))))))) is different from false [2023-11-29 01:08:21,102 INFO L378 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 48 treesize of output 44 [2023-11-29 01:08:21,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:08:21,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:08:24,125 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-11-29 01:08:24,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9624 treesize of output 9482 [2023-11-29 01:08:27,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:08:27,017 INFO L378 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 8372 treesize of output 8282 [2023-11-29 01:08:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 1 times theorem prover too weak. 0 trivial. 13 not checked. [2023-11-29 01:08:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626332017] [2023-11-29 01:08:29,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977529935] [2023-11-29 01:08:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977529935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:29,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:08:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-11-29 01:08:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134906732] [2023-11-29 01:08:29,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:08:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:08:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=299, Unknown=13, NotChecked=74, Total=462 [2023-11-29 01:08:29,149 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:33,708 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse35 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse33 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse32 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse26 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse31 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse27 (* .cse31 8)) (.cse28 (* 8 .cse26)) (.cse29 (* .cse32 8)) (.cse30 (* .cse33 8)) (.cse34 (* .cse35 8)) (.cse25 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse6 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) .cse25 1)) (.cse22 (< 2147483647 .cse35)) (.cse21 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse24 (< .cse35 2147483648)) (.cse20 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 9 .cse25)) (.cse23 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse33 2147483648)) (.cse7 (< 2147483647 .cse33)) (.cse3 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (< .cse32 2147483648)) (.cse13 (< 2147483647 .cse32)) (.cse4 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse0 (< .cse26 2147483648)) (.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse27)) (.cse19 (< 2147483647 .cse31)) (.cse17 (< .cse31 2147483648)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse29 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse27)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) .cse25 4)) (.cse11 (< 2147483647 .cse26))) (and (or (and (or .cse0 (and (or (forall ((v_DerPreprocessor_58 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_58) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_DerPreprocessor_57 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse6) (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_57) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1))) .cse9))) (or (forall ((v_DerPreprocessor_56 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_56) .cse3 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse11)) .cse12) (= (select .cse1 .cse5) 1) (or (and (or (and (or .cse13 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_386) .cse15 v_prenex_387) .cse5) 1) (< v_prenex_386 .cse16)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_60) .cse10 v_ArrVal_211) .cse15 v_DerPreprocessor_53) .cse5) 1))) .cse12)) .cse11) (or .cse0 (and (or .cse17 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_391) .cse18 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse16)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_56) .cse4 v_prenex_392) .cse15 v_prenex_393) .cse5) 1))) .cse19)))) .cse9) (or .cse7 (and (or .cse13 (and (or .cse17 (and (or .cse0 (forall ((v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_64 Int) (v_prenex_417 Int) (v_prenex_416 Int)) (or (< v_prenex_382 .cse20) (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_416) .cse4 v_prenex_417) .cse18 v_prenex_382) .cse21 v_prenex_385) .cse5) 1)))) (or (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_DerPreprocessor_64 Int) (v_prenex_380 Int) (v_prenex_415 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_415) .cse10 v_DerPreprocessor_58) .cse18 v_prenex_380) .cse21 v_prenex_381) .cse5) 1) (< v_prenex_380 .cse20))) .cse11))) (or (and (or .cse22 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_64 Int) (v_prenex_418 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_DerPreprocessor_62) .cse10 v_prenex_418) .cse15 v_prenex_377) .cse23 v_prenex_378) .cse5) 1) (< v_prenex_377 .cse20)))) (or (forall ((v_prenex_414 Int) (v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_64 Int) (v_DerPreprocessor_54 Int)) (or (< v_prenex_379 .cse20) (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse14 v_prenex_414) .cse10 v_DerPreprocessor_59) .cse15 v_prenex_379) .cse21 v_DerPreprocessor_54) .cse5) 1))) .cse24)) .cse19))) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_64 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse1 .cse2 v_DerPreprocessor_64) .cse3 v_DerPreprocessor_63) .cse4 v_DerPreprocessor_57) .cse18 v_prenex_391) .cse21 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse20))) .cse12))) (or .cse13 (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_59) .cse14 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6)))) (or (and (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_61) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_60) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse9)) .cse11))) (<= 25 (select .cse1 (+ 40 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or .cse7 (and (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1))) .cse12))) (or (and (or (and (or .cse17 (and (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_419 Int) (v_prenex_393 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_419) .cse4 v_DerPreprocessor_56) .cse18 v_prenex_392) .cse23 v_prenex_393) .cse5) 1) (< v_prenex_392 .cse20))) .cse22) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_65 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_DerPreprocessor_63) .cse4 v_DerPreprocessor_57) .cse18 v_prenex_391) .cse21 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse20))) .cse24))) (or (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_prenex_421 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_421) .cse4 v_DerPreprocessor_60) .cse15 v_ArrVal_211) .cse23 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse20)))) (or (forall ((v_prenex_420 Int) (v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_65 Int)) (or (< v_prenex_386 .cse20) (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse3 v_prenex_420) .cse10 v_DerPreprocessor_61) .cse15 v_prenex_386) .cse23 v_prenex_387) .cse5) 1))) .cse11)) .cse19)) .cse12) (or .cse13 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_65 Int) (v_DerPreprocessor_62 Int) (v_prenex_426 Int)) (or (< v_prenex_377 .cse20) (= (select (store (store (store (store (store .cse1 .cse8 v_DerPreprocessor_65) .cse14 v_DerPreprocessor_62) .cse10 v_prenex_426) .cse15 v_prenex_377) .cse23 v_prenex_378) .cse5) 1))))) .cse9) (or (and (or .cse12 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1)))) (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse25) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1))))) .cse9) (or .cse7 (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse16) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_382) .cse18 v_prenex_385) .cse5) 1))) .cse12) (or .cse13 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_58) .cse4 v_prenex_380) .cse18 v_prenex_381) .cse5) 1) (< v_prenex_380 .cse16))))) .cse0) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_377) .cse15 v_prenex_378) .cse5) 1) (< v_prenex_377 .cse16))) .cse19) (or .cse17 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_59) .cse10 v_prenex_379) .cse18 v_DerPreprocessor_54) .cse5) 1) (< v_prenex_379 .cse16))))) .cse11))))))) is different from false [2023-11-29 01:08:39,350 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse28 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse27 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse21 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse26 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse22 (* .cse26 8)) (.cse23 (* 8 .cse21)) (.cse24 (* .cse27 8)) (.cse25 (* .cse28 8)) (.cse20 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse6 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) .cse20 1)) (.cse8 (+ .cse25 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse9 (< .cse28 2147483648)) (.cse7 (< 2147483647 .cse28)) (.cse3 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (< .cse27 2147483648)) (.cse13 (< 2147483647 .cse27)) (.cse4 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse0 (< .cse21 2147483648)) (.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse22)) (.cse19 (< 2147483647 .cse26)) (.cse17 (< .cse26 2147483648)) (.cse1 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse22)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) .cse20 4)) (.cse11 (< 2147483647 .cse21))) (and (or (and (or .cse0 (and (or (forall ((v_DerPreprocessor_58 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_58) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_DerPreprocessor_57 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse6) (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_57) .cse3 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1))) .cse9))) (or (forall ((v_DerPreprocessor_56 Int) (v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_56) .cse3 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse11)) .cse12) (or (and (or (and (or .cse13 (forall ((v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_386) .cse15 v_prenex_387) .cse5) 1) (< v_prenex_386 .cse16)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_63 Int)) (or (< v_ArrVal_211 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_60) .cse10 v_ArrVal_211) .cse15 v_DerPreprocessor_53) .cse5) 1))) .cse12)) .cse11) (or .cse0 (and (or .cse17 (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_391) .cse18 v_prenex_394) .cse5) 1) (< v_prenex_391 .cse16)))) (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_393 Int) (v_DerPreprocessor_63 Int)) (or (< v_prenex_392 .cse16) (= (select (store (store (store (store .cse1 .cse8 v_DerPreprocessor_63) .cse3 v_DerPreprocessor_56) .cse4 v_prenex_392) .cse15 v_prenex_393) .cse5) 1))) .cse19)))) .cse9) (or .cse13 (and (or .cse0 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_59) .cse14 v_ArrVal_211) .cse4 v_DerPreprocessor_54) .cse5) 1) (< v_ArrVal_211 .cse6)))) (or (and (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse2 v_DerPreprocessor_61) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse7) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int)) (or (= (select (store (store (store .cse1 .cse8 v_DerPreprocessor_60) .cse14 v_ArrVal_211) .cse10 v_DerPreprocessor_53) .cse5) 1) (< v_ArrVal_211 .cse6))) .cse9)) .cse11))) (or .cse7 (and (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse20) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse20) (= (select (store (store .cse1 .cse2 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1))) .cse12))) (or (and (or .cse12 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse20) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse3 v_DerPreprocessor_54) .cse5) 1)))) (or .cse13 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse20) (= (select (store (store .cse1 .cse8 v_ArrVal_211) .cse14 v_DerPreprocessor_53) .cse5) 1))))) .cse9) (or .cse7 (and (or (and (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_62 Int)) (or (< v_prenex_382 .cse16) (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse3 v_DerPreprocessor_57) .cse4 v_prenex_382) .cse18 v_prenex_385) .cse5) 1))) .cse12) (or .cse13 (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_prenex_380 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_58) .cse4 v_prenex_380) .cse18 v_prenex_381) .cse5) 1) (< v_prenex_380 .cse16))))) .cse0) (or (and (or (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_61) .cse10 v_prenex_377) .cse15 v_prenex_378) .cse5) 1) (< v_prenex_377 .cse16))) .cse19) (or .cse17 (forall ((v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_54 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store .cse1 .cse2 v_DerPreprocessor_62) .cse14 v_DerPreprocessor_59) .cse10 v_prenex_379) .cse18 v_DerPreprocessor_54) .cse5) 1) (< v_prenex_379 .cse16))))) .cse11))))))) is different from false [2023-11-29 01:09:25,677 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse24 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse31 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse33 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse32 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse27 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse25 (* .cse27 8)) (.cse21 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (.cse30 (* 8 .cse32)) (.cse28 (* .cse33 8)) (.cse29 (* .cse31 8)) (.cse26 (* .cse24 8))) (let ((.cse0 (< 2147483647 .cse24)) (.cse6 (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (< .cse31 2147483648)) (.cse14 (< 2147483647 .cse33)) (.cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse29)) (.cse10 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse17 (< .cse33 2147483648)) (.cse3 (< .cse32 2147483648)) (.cse8 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse13 (< 2147483647 .cse32)) (.cse18 (< 2147483647 .cse31)) (.cse4 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 9 .cse21)) (.cse12 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29)) (.cse16 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (< .cse27 2147483648)) (.cse19 (+ .cse25 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse1 (< 2147483647 .cse27)) (.cse5 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse22 (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse7 (+ .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (< .cse24 2147483648))) (and (or .cse0 (and (or .cse1 (and (or .cse2 (and (or .cse3 (forall ((v_prenex_385 Int) (v_prenex_382 Int) (v_DerPreprocessor_64 Int) (v_prenex_417 Int) (v_prenex_416 Int)) (or (< v_prenex_382 .cse4) (= (select (store (store (store (store (store .cse5 .cse6 v_DerPreprocessor_64) .cse7 v_prenex_416) .cse8 v_prenex_417) .cse9 v_prenex_382) .cse10 v_prenex_385) .cse11) 1)))) (or (forall ((v_DerPreprocessor_58 Int) (v_prenex_381 Int) (v_DerPreprocessor_64 Int) (v_prenex_380 Int) (v_prenex_415 Int)) (or (= (select (store (store (store (store (store .cse5 .cse6 v_DerPreprocessor_64) .cse7 v_prenex_415) .cse12 v_DerPreprocessor_58) .cse9 v_prenex_380) .cse10 v_prenex_381) .cse11) 1) (< v_prenex_380 .cse4))) .cse13))) (or (and (or .cse14 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_64 Int) (v_prenex_418 Int) (v_DerPreprocessor_62 Int)) (or (= (select (store (store (store (store (store .cse5 .cse6 v_DerPreprocessor_64) .cse7 v_DerPreprocessor_62) .cse12 v_prenex_418) .cse15 v_prenex_377) .cse16 v_prenex_378) .cse11) 1) (< v_prenex_377 .cse4)))) (or (forall ((v_prenex_414 Int) (v_prenex_379 Int) (v_DerPreprocessor_59 Int) (v_DerPreprocessor_64 Int) (v_DerPreprocessor_54 Int)) (or (< v_prenex_379 .cse4) (= (select (store (store (store (store (store .cse5 .cse6 v_DerPreprocessor_64) .cse7 v_prenex_414) .cse12 v_DerPreprocessor_59) .cse15 v_prenex_379) .cse10 v_DerPreprocessor_54) .cse11) 1))) .cse17)) .cse18))) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_64 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse5 .cse6 v_DerPreprocessor_64) .cse19 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_57) .cse9 v_prenex_391) .cse10 v_prenex_394) .cse11) 1) (< v_prenex_391 .cse4))) .cse20))) (or .cse0 (and (or .cse1 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse21) (= (select (store (store .cse5 .cse6 v_ArrVal_211) .cse7 v_DerPreprocessor_53) .cse11) 1)))) (or (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse21) (= (select (store (store .cse5 .cse6 v_ArrVal_211) .cse19 v_DerPreprocessor_54) .cse11) 1))) .cse20))) (or (and (or (and (or .cse2 (and (or (forall ((v_DerPreprocessor_56 Int) (v_prenex_392 Int) (v_prenex_419 Int) (v_prenex_393 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse5 .cse22 v_DerPreprocessor_65) .cse19 v_prenex_419) .cse8 v_DerPreprocessor_56) .cse9 v_prenex_392) .cse16 v_prenex_393) .cse11) 1) (< v_prenex_392 .cse4))) .cse14) (or (forall ((v_DerPreprocessor_57 Int) (v_prenex_394 Int) (v_DerPreprocessor_65 Int) (v_prenex_391 Int) (v_DerPreprocessor_63 Int)) (or (= (select (store (store (store (store (store .cse5 .cse22 v_DerPreprocessor_65) .cse19 v_DerPreprocessor_63) .cse8 v_DerPreprocessor_57) .cse9 v_prenex_391) .cse10 v_prenex_394) .cse11) 1) (< v_prenex_391 .cse4))) .cse17))) (or (and (or .cse3 (forall ((v_ArrVal_211 Int) (v_prenex_421 Int) (v_DerPreprocessor_60 Int) (v_DerPreprocessor_53 Int) (v_DerPreprocessor_65 Int)) (or (= (select (store (store (store (store (store .cse5 .cse22 v_DerPreprocessor_65) .cse19 v_prenex_421) .cse8 v_DerPreprocessor_60) .cse15 v_ArrVal_211) .cse16 v_DerPreprocessor_53) .cse11) 1) (< v_ArrVal_211 .cse4)))) (or (forall ((v_prenex_420 Int) (v_prenex_387 Int) (v_prenex_386 Int) (v_DerPreprocessor_61 Int) (v_DerPreprocessor_65 Int)) (or (< v_prenex_386 .cse4) (= (select (store (store (store (store (store .cse5 .cse22 v_DerPreprocessor_65) .cse19 v_prenex_420) .cse12 v_DerPreprocessor_61) .cse15 v_prenex_386) .cse16 v_prenex_387) .cse11) 1))) .cse13)) .cse18)) .cse20) (or .cse1 (forall ((v_prenex_378 Int) (v_prenex_377 Int) (v_DerPreprocessor_65 Int) (v_DerPreprocessor_62 Int) (v_prenex_426 Int)) (or (< v_prenex_377 .cse4) (= (select (store (store (store (store (store .cse5 .cse22 v_DerPreprocessor_65) .cse7 v_DerPreprocessor_62) .cse12 v_prenex_426) .cse15 v_prenex_377) .cse16 v_prenex_378) .cse11) 1))))) .cse23) (or (and (or .cse20 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_54 Int)) (or (< v_ArrVal_211 .cse21) (= (select (store (store .cse5 .cse22 v_ArrVal_211) .cse19 v_DerPreprocessor_54) .cse11) 1)))) (or .cse1 (forall ((v_ArrVal_211 Int) (v_DerPreprocessor_53 Int)) (or (< v_ArrVal_211 .cse21) (= (select (store (store .cse5 .cse22 v_ArrVal_211) .cse7 v_DerPreprocessor_53) .cse11) 1))))) .cse23))))) is different from false [2023-11-29 01:09:46,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:09:50,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:09:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:58,580 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2023-11-29 01:09:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 01:09:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 01:09:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:58,582 INFO L225 Difference]: With dead ends: 168 [2023-11-29 01:09:58,582 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 01:09:58,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 138.4s TimeCoverageRelationStatistics Valid=363, Invalid=1788, Unknown=31, NotChecked=470, Total=2652 [2023-11-29 01:09:58,584 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 189 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:58,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 336 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 469 Invalid, 2 Unknown, 320 Unchecked, 9.2s Time] [2023-11-29 01:09:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 01:09:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 47. [2023-11-29 01:09:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-11-29 01:09:58,615 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 17 [2023-11-29 01:09:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:58,616 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-11-29 01:09:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-11-29 01:09:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:09:58,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:58,617 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:58,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:09:58,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:09:58,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:58,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:58,818 INFO L85 PathProgramCache]: Analyzing trace with hash 906023600, now seen corresponding path program 5 times [2023-11-29 01:09:58,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:58,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329573877] [2023-11-29 01:09:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:58,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380688245] [2023-11-29 01:09:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:09:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:58,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:58,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:10:11,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 01:10:11,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:10:11,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 01:10:11,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:11,165 INFO L378 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 13 treesize of output 9 [2023-11-29 01:10:11,185 INFO L378 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 29 treesize of output 13 [2023-11-29 01:10:11,203 INFO L378 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 29 treesize of output 13 [2023-11-29 01:10:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:11,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:12,098 INFO L378 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 48 treesize of output 44 [2023-11-29 01:10:12,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:12,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:10:12,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:12,935 INFO L378 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 684 treesize of output 654 [2023-11-29 01:10:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329573877] [2023-11-29 01:10:13,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:10:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380688245] [2023-11-29 01:10:13,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380688245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:13,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:10:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2023-11-29 01:10:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974241789] [2023-11-29 01:10:13,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:10:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:10:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:10:13,164 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:14,975 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2023-11-29 01:10:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 01:10:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 01:10:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:14,976 INFO L225 Difference]: With dead ends: 127 [2023-11-29 01:10:14,976 INFO L226 Difference]: Without dead ends: 125 [2023-11-29 01:10:14,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:10:14,977 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:14,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 161 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:10:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-29 01:10:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 47. [2023-11-29 01:10:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2023-11-29 01:10:15,007 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2023-11-29 01:10:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:15,007 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2023-11-29 01:10:15,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2023-11-29 01:10:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 01:10:15,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:15,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:15,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:10:15,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:15,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:15,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1131975031, now seen corresponding path program 6 times [2023-11-29 01:10:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:15,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986205476] [2023-11-29 01:10:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:15,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:10:15,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141526243] [2023-11-29 01:10:15,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:10:15,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:15,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:15,220 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:15,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:10:15,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 01:10:15,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:10:15,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:10:15,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:15,439 INFO L378 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 13 treesize of output 9 [2023-11-29 01:10:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:15,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:16,223 INFO L378 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 48 treesize of output 44 [2023-11-29 01:10:16,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:16,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:10:16,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:16,321 INFO L378 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 56 treesize of output 39 [2023-11-29 01:10:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:16,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986205476] [2023-11-29 01:10:16,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:10:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141526243] [2023-11-29 01:10:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141526243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:16,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:10:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-29 01:10:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925970793] [2023-11-29 01:10:16,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:10:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:10:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:10:16,850 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:19,027 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2023-11-29 01:10:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:10:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-29 01:10:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:19,028 INFO L225 Difference]: With dead ends: 115 [2023-11-29 01:10:19,028 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 01:10:19,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=478, Invalid=2602, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 01:10:19,030 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:19,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 184 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:10:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 01:10:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 40. [2023-11-29 01:10:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-11-29 01:10:19,062 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 20 [2023-11-29 01:10:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:19,062 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-11-29 01:10:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-11-29 01:10:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:10:19,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:19,063 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:19,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:10:19,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:19,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:19,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1117076643, now seen corresponding path program 7 times [2023-11-29 01:10:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767218575] [2023-11-29 01:10:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:19,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:10:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091024283] [2023-11-29 01:10:19,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:10:19,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:19,275 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:19,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:10:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:19,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 01:10:19,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:19,838 INFO L378 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 13 treesize of output 9 [2023-11-29 01:10:19,859 INFO L378 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 29 treesize of output 13 [2023-11-29 01:10:19,880 INFO L378 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 [2023-11-29 01:10:19,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:19,918 INFO L378 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 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-29 01:10:19,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:19,956 INFO L378 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 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-29 01:10:19,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:19,996 INFO L378 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 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-29 01:10:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:20,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:25,577 INFO L378 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 48 treesize of output 44 [2023-11-29 01:10:25,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:25,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:10:28,091 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-11-29 01:10:28,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3978 treesize of output 3908 [2023-11-29 01:10:30,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:10:30,730 INFO L378 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 356722 treesize of output 354616 [2023-11-29 01:10:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:33,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767218575] [2023-11-29 01:10:33,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:10:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091024283] [2023-11-29 01:10:33,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091024283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:33,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:10:33,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-11-29 01:10:33,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028928426] [2023-11-29 01:10:33,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 01:10:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 01:10:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:10:33,408 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:00,807 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2023-11-29 01:11:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-29 01:11:00,807 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:11:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:00,808 INFO L225 Difference]: With dead ends: 192 [2023-11-29 01:11:00,809 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 01:11:00,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=1150, Invalid=7222, Unknown=0, NotChecked=0, Total=8372 [2023-11-29 01:11:00,812 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 261 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:00,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 328 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:11:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 01:11:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 52. [2023-11-29 01:11:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-11-29 01:11:00,864 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 21 [2023-11-29 01:11:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:00,865 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-11-29 01:11:00,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-29 01:11:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:11:00,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:00,865 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:00,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:11:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:11:01,066 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:11:01,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1779879452, now seen corresponding path program 8 times [2023-11-29 01:11:01,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460178271] [2023-11-29 01:11:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:01,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651395786] [2023-11-29 01:11:01,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:01,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:01,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:01,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:01,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:11:01,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:01,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:01,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 01:11:01,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:01,293 INFO L378 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 13 treesize of output 9 [2023-11-29 01:11:01,312 INFO L378 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 29 treesize of output 13 [2023-11-29 01:11:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:01,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:02,087 INFO L378 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 48 treesize of output 44 [2023-11-29 01:11:02,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:11:02,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 91 [2023-11-29 01:11:02,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:11:02,499 INFO L378 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 260 treesize of output 242 [2023-11-29 01:11:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460178271] [2023-11-29 01:11:02,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:02,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651395786] [2023-11-29 01:11:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651395786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:02,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:11:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-11-29 01:11:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616159869] [2023-11-29 01:11:02,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:02,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:11:02,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:11:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:11:02,562 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:03,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:03,730 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2023-11-29 01:11:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 01:11:03,730 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 01:11:03,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:03,731 INFO L225 Difference]: With dead ends: 124 [2023-11-29 01:11:03,731 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 01:11:03,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:11:03,732 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:03,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 159 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:11:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 01:11:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 56. [2023-11-29 01:11:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-11-29 01:11:03,791 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 21 [2023-11-29 01:11:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:03,791 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-11-29 01:11:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-11-29 01:11:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:11:03,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:03,792 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:03,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:11:03,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:11:03,993 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:11:03,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2015997155, now seen corresponding path program 5 times [2023-11-29 01:11:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:03,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170351394] [2023-11-29 01:11:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:04,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195516738] [2023-11-29 01:11:04,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:11:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:04,005 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:04,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1028ef23-c589-40a4-87c2-67d9002cda5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process