./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme --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 8e02e3162d4ac684b0ff9ed860eab65b0ec801c533748a64b9c6f0865c039d56 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:44,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:44,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:41:44,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:44,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:44,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:44,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:44,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:44,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:44,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:44,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:44,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:44,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:44,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:44,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:44,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:44,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:44,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:44,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:44,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:44,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:44,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:44,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:44,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:44,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:44,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:44,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:44,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:44,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:44,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:44,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:44,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:44,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:44,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:44,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:44,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:44,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:44,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:44,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:44,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:44,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:44,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:44,576 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_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e02e3162d4ac684b0ff9ed860eab65b0ec801c533748a64b9c6f0865c039d56 [2023-11-26 10:41:44,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:44,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:44,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:44,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:44,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:44,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i [2023-11-26 10:41:48,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:48,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:48,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i [2023-11-26 10:41:48,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/data/f1c626ca0/439041cebd254a23ab7e18852396a209/FLAGb2f31f953 [2023-11-26 10:41:48,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/data/f1c626ca0/439041cebd254a23ab7e18852396a209 [2023-11-26 10:41:48,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:48,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:48,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:48,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:48,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:48,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d13e286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48, skipping insertion in model container [2023-11-26 10:41:48,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:48,668 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_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i[917,930] [2023-11-26 10:41:48,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:48,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:48,762 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_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-43.i[917,930] [2023-11-26 10:41:48,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:48,841 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:48,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48 WrapperNode [2023-11-26 10:41:48,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:48,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:48,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:48,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:48,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,932 INFO L138 Inliner]: procedures = 29, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 507 [2023-11-26 10:41:48,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:48,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:48,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:48,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:48,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:48,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,038 INFO L175 MemorySlicer]: Split 144 memory accesses to 2 slices as follows [2, 142]. 99 percent of accesses are in the largest equivalence class. The 20 initializations are split as follows [2, 18]. The 21 writes are split as follows [0, 21]. [2023-11-26 10:41:49,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:49,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:49,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:49,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:49,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (1/1) ... [2023-11-26 10:41:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:49,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:49,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 10:41:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 10:41:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:41:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:41:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-26 10:41:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-26 10:41:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:41:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:41:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-26 10:41:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-26 10:41:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:41:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:41:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:41:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:49,420 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:49,423 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:50,258 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:50,335 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:50,335 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:41:50,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:50 BoogieIcfgContainer [2023-11-26 10:41:50,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:50,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:50,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:50,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:50,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:48" (1/3) ... [2023-11-26 10:41:50,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77165a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:50, skipping insertion in model container [2023-11-26 10:41:50,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:48" (2/3) ... [2023-11-26 10:41:50,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77165a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:50, skipping insertion in model container [2023-11-26 10:41:50,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:50" (3/3) ... [2023-11-26 10:41:50,352 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-43.i [2023-11-26 10:41:50,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:50,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:41:50,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:50,456 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;@15443ccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:50,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:41:50,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 92 states have internal predecessors, (135), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:41:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:41:50,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:50,488 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:50,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:50,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1527817515, now seen corresponding path program 1 times [2023-11-26 10:41:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:50,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155638805] [2023-11-26 10:41:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155638805] [2023-11-26 10:41:50,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10946163] [2023-11-26 10:41:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:50,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:50,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:51,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:41:51,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-26 10:41:51,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:51,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10946163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:51,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317133941] [2023-11-26 10:41:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:41:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:41:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:51,391 INFO L87 Difference]: Start difference. First operand has 114 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 92 states have internal predecessors, (135), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:41:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:51,462 INFO L93 Difference]: Finished difference Result 225 states and 368 transitions. [2023-11-26 10:41:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:41:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-11-26 10:41:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:51,483 INFO L225 Difference]: With dead ends: 225 [2023-11-26 10:41:51,483 INFO L226 Difference]: Without dead ends: 112 [2023-11-26 10:41:51,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:51,495 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:51,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-26 10:41:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-26 10:41:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 90 states have internal predecessors, (130), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:41:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2023-11-26 10:41:51,592 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 162 [2023-11-26 10:41:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:51,592 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2023-11-26 10:41:51,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:41:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2023-11-26 10:41:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:41:51,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:51,599 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:51,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:51,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:51,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:51,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1135737291, now seen corresponding path program 1 times [2023-11-26 10:41:51,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:51,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444841849] [2023-11-26 10:41:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:51,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996196121] [2023-11-26 10:41:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:51,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:51,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:52,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-26 10:41:52,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:52,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444841849] [2023-11-26 10:41:52,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996196121] [2023-11-26 10:41:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996196121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:52,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:52,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:52,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682805014] [2023-11-26 10:41:52,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:52,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:52,263 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:52,333 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2023-11-26 10:41:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-11-26 10:41:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:52,337 INFO L225 Difference]: With dead ends: 235 [2023-11-26 10:41:52,337 INFO L226 Difference]: Without dead ends: 124 [2023-11-26 10:41:52,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:52,340 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 21 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:52,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 488 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-26 10:41:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 114. [2023-11-26 10:41:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.434782608695652) internal successors, (132), 92 states have internal predecessors, (132), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:41:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 172 transitions. [2023-11-26 10:41:52,356 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 172 transitions. Word has length 162 [2023-11-26 10:41:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:52,358 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 172 transitions. [2023-11-26 10:41:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 172 transitions. [2023-11-26 10:41:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:41:52,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:52,363 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:52,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:52,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:52,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1945083917, now seen corresponding path program 1 times [2023-11-26 10:41:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:52,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920354624] [2023-11-26 10:41:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:52,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:52,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201478761] [2023-11-26 10:41:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:52,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:52,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:52,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:52,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-26 10:41:53,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:53,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:53,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920354624] [2023-11-26 10:41:53,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:53,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201478761] [2023-11-26 10:41:53,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201478761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:53,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:53,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:53,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630356579] [2023-11-26 10:41:53,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:53,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:53,020 INFO L87 Difference]: Start difference. First operand 114 states and 172 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:53,073 INFO L93 Difference]: Finished difference Result 235 states and 354 transitions. [2023-11-26 10:41:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-11-26 10:41:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:53,082 INFO L225 Difference]: With dead ends: 235 [2023-11-26 10:41:53,082 INFO L226 Difference]: Without dead ends: 122 [2023-11-26 10:41:53,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:53,085 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 12 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:53,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 486 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-26 10:41:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-11-26 10:41:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:41:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 174 transitions. [2023-11-26 10:41:53,104 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 174 transitions. Word has length 162 [2023-11-26 10:41:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:53,105 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 174 transitions. [2023-11-26 10:41:53,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 174 transitions. [2023-11-26 10:41:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:41:53,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:53,110 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:53,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:53,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:53,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1887825615, now seen corresponding path program 1 times [2023-11-26 10:41:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633142030] [2023-11-26 10:41:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:53,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682324624] [2023-11-26 10:41:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:53,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:53,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:53,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:53,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:41:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:53,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:53,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-26 10:41:53,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633142030] [2023-11-26 10:41:53,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682324624] [2023-11-26 10:41:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682324624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932195883] [2023-11-26 10:41:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:53,743 INFO L87 Difference]: Start difference. First operand 116 states and 174 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:53,801 INFO L93 Difference]: Finished difference Result 235 states and 352 transitions. [2023-11-26 10:41:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:53,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-11-26 10:41:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:53,804 INFO L225 Difference]: With dead ends: 235 [2023-11-26 10:41:53,804 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 10:41:53,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:53,810 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:53,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 486 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 10:41:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2023-11-26 10:41:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:41:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 176 transitions. [2023-11-26 10:41:53,839 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 176 transitions. Word has length 162 [2023-11-26 10:41:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:53,841 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 176 transitions. [2023-11-26 10:41:53,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:41:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 176 transitions. [2023-11-26 10:41:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:41:53,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:53,846 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:53,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:54,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:54,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1887766033, now seen corresponding path program 1 times [2023-11-26 10:41:54,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:54,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969978952] [2023-11-26 10:41:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:54,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:54,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320369943] [2023-11-26 10:41:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:54,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:54,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:54,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:54,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:41:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:54,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-26 10:41:54,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:58,553 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 15 treesize of output 1 [2023-11-26 10:41:59,101 INFO L349 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2023-11-26 10:41:59,102 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 2 case distinctions, treesize of input 39 treesize of output 45 [2023-11-26 10:41:59,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,152 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 10:41:59,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2023-11-26 10:41:59,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:41:59,218 INFO L349 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2023-11-26 10:41:59,218 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 3 case distinctions, treesize of input 23 treesize of output 46 [2023-11-26 10:42:00,477 INFO L349 Elim1Store]: treesize reduction 42, result has 45.5 percent of original size [2023-11-26 10:42:00,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 157 treesize of output 152 [2023-11-26 10:42:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,296 INFO L349 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2023-11-26 10:42:01,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 54 [2023-11-26 10:42:01,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,368 INFO L349 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2023-11-26 10:42:01,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 54 treesize of output 42 [2023-11-26 10:42:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,420 INFO L349 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2023-11-26 10:42:01,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 58 treesize of output 46 [2023-11-26 10:42:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:01,452 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-26 10:42:01,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 30 [2023-11-26 10:42:01,544 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-26 10:42:01,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2023-11-26 10:42:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 10:42:01,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969978952] [2023-11-26 10:42:05,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:42:05,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320369943] [2023-11-26 10:42:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320369943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:05,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-26 10:42:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306384929] [2023-11-26 10:42:05,935 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:42:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:42:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:42:05,937 INFO L87 Difference]: Start difference. First operand 118 states and 176 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:42:08,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:08,934 INFO L93 Difference]: Finished difference Result 312 states and 465 transitions. [2023-11-26 10:42:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:42:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-11-26 10:42:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:08,938 INFO L225 Difference]: With dead ends: 312 [2023-11-26 10:42:08,938 INFO L226 Difference]: Without dead ends: 195 [2023-11-26 10:42:08,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:42:08,940 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 404 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:08,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 531 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:42:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-26 10:42:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2023-11-26 10:42:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 147 states have (on average 1.3945578231292517) internal successors, (205), 148 states have internal predecessors, (205), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:42:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 281 transitions. [2023-11-26 10:42:08,981 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 281 transitions. Word has length 162 [2023-11-26 10:42:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:08,982 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 281 transitions. [2023-11-26 10:42:08,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:42:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 281 transitions. [2023-11-26 10:42:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:42:08,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:08,985 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:08,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:09,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:09,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 718257521, now seen corresponding path program 1 times [2023-11-26 10:42:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164321778] [2023-11-26 10:42:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:09,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:42:09,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21768719] [2023-11-26 10:42:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:09,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:09,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:09,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:09,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:42:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:09,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 10:42:09,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:11,095 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-26 10:42:11,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2023-11-26 10:42:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:11,229 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-26 10:42:11,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2023-11-26 10:42:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-26 10:42:11,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:11,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164321778] [2023-11-26 10:42:11,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:42:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21768719] [2023-11-26 10:42:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21768719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:11,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:11,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:42:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517798974] [2023-11-26 10:42:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:11,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:42:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:42:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:42:11,253 INFO L87 Difference]: Start difference. First operand 188 states and 281 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:42:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:11,908 INFO L93 Difference]: Finished difference Result 409 states and 606 transitions. [2023-11-26 10:42:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:42:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-11-26 10:42:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:11,914 INFO L225 Difference]: With dead ends: 409 [2023-11-26 10:42:11,914 INFO L226 Difference]: Without dead ends: 282 [2023-11-26 10:42:11,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:42:11,916 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 387 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:11,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 481 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:42:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-26 10:42:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 192. [2023-11-26 10:42:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 152 states have internal predecessors, (211), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:42:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2023-11-26 10:42:11,955 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 162 [2023-11-26 10:42:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:11,956 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2023-11-26 10:42:11,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-26 10:42:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2023-11-26 10:42:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:42:11,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:11,959 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:11,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:12,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:12,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash -561606157, now seen corresponding path program 1 times [2023-11-26 10:42:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590980434] [2023-11-26 10:42:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:12,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:42:12,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318644135] [2023-11-26 10:42:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:12,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:12,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:12,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450ebdb4-e387-4261-b8f4-eb59fe0ef23c/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:42:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:12,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-26 10:42:12,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:13,485 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 15 treesize of output 1 [2023-11-26 10:42:13,916 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 23 treesize of output 11 [2023-11-26 10:42:14,269 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 23 treesize of output 11 [2023-11-26 10:42:14,614 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 23 treesize of output 11 [2023-11-26 10:42:14,975 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 23 treesize of output 11 [2023-11-26 10:42:15,371 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 23 treesize of output 11 [2023-11-26 10:42:15,796 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 23 treesize of output 11 [2023-11-26 10:42:16,180 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 23 treesize of output 11 [2023-11-26 10:42:16,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,696 INFO L349 Elim1Store]: treesize reduction 245, result has 25.1 percent of original size [2023-11-26 10:42:16,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 145 [2023-11-26 10:42:17,315 INFO L349 Elim1Store]: treesize reduction 252, result has 32.3 percent of original size [2023-11-26 10:42:17,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 212 treesize of output 279 [2023-11-26 10:42:19,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,748 INFO L349 Elim1Store]: treesize reduction 8, result has 87.7 percent of original size [2023-11-26 10:42:19,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 115 treesize of output 147 [2023-11-26 10:42:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-11-26 10:42:19,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 10:42:19,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 100 [2023-11-26 10:42:20,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:20,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-26 10:42:20,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:20,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:20,954 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-26 10:42:20,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-11-26 10:42:21,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-26 10:42:21,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-26 10:42:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18