./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu --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 acedb713d8fb6ee88e504476b1a8afa9aad0050a29ab1fa7a298d11252db5c53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:04,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:04,281 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:04,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:04,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:04,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:04,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:04,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:04,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:04,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:04,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:04,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:04,352 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:04,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:04,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:04,355 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:04,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:04,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:04,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:04,356 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:04,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:04,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:04,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:04,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:04,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:04,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:04,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:04,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:04,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:04,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:04,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:04,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:04,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:04,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:04,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:04,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:04,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:04,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:04,367 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:04,367 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_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acedb713d8fb6ee88e504476b1a8afa9aad0050a29ab1fa7a298d11252db5c53 [2023-11-19 08:05:04,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:04,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:04,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:04,692 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:04,693 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:04,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i [2023-11-19 08:05:07,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:08,141 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:08,145 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i [2023-11-19 08:05:08,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/data/8752ae56a/4d16c19ff176442aa0082e3354680cac/FLAGdfc365f8d [2023-11-19 08:05:08,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/data/8752ae56a/4d16c19ff176442aa0082e3354680cac [2023-11-19 08:05:08,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:08,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:08,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:08,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:08,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:08,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6f504d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08, skipping insertion in model container [2023-11-19 08:05:08,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:08,480 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_217c8023-b238-4faa-81e5-99176799cc3d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i[916,929] [2023-11-19 08:05:08,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:08,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:08,618 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_217c8023-b238-4faa-81e5-99176799cc3d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-67.i[916,929] [2023-11-19 08:05:08,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:08,696 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:08,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08 WrapperNode [2023-11-19 08:05:08,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:08,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:08,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:08,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:08,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,797 INFO L138 Inliner]: procedures = 29, calls = 141, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 381 [2023-11-19 08:05:08,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:08,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:08,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:08,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:08,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:08,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:08,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:08,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:08,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (1/1) ... [2023-11-19 08:05:08,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:08,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:08,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 08:05:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 08:05:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 08:05:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:05:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:05:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:09,105 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:09,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:09,644 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:09,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:09,653 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:09,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:09 BoogieIcfgContainer [2023-11-19 08:05:09,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:09,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:09,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:09,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:09,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:08" (1/3) ... [2023-11-19 08:05:09,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f345e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:09, skipping insertion in model container [2023-11-19 08:05:09,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:08" (2/3) ... [2023-11-19 08:05:09,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f345e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:09, skipping insertion in model container [2023-11-19 08:05:09,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:09" (3/3) ... [2023-11-19 08:05:09,671 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-67.i [2023-11-19 08:05:09,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:09,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:09,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:09,782 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;@6bf8b636, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:09,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 08:05:09,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:09,805 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:09,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:09,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash -765524688, now seen corresponding path program 1 times [2023-11-19 08:05:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:09,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805720598] [2023-11-19 08:05:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:09,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805720598] [2023-11-19 08:05:10,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:05:10,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735040894] [2023-11-19 08:05:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:10,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:10,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:10,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:05:10,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-19 08:05:10,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735040894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:10,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:10,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567388929] [2023-11-19 08:05:10,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:10,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:10,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:10,545 INFO L87 Difference]: Start difference. First operand has 91 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 77 states have internal predecessors, (107), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 08:05:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:10,587 INFO L93 Difference]: Finished difference Result 175 states and 268 transitions. [2023-11-19 08:05:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2023-11-19 08:05:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:10,598 INFO L225 Difference]: With dead ends: 175 [2023-11-19 08:05:10,598 INFO L226 Difference]: Without dead ends: 87 [2023-11-19 08:05:10,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:10,612 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:10,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-19 08:05:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-19 08:05:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 73 states have (on average 1.36986301369863) internal successors, (100), 73 states have internal predecessors, (100), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2023-11-19 08:05:10,669 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 104 [2023-11-19 08:05:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:10,670 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2023-11-19 08:05:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-19 08:05:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2023-11-19 08:05:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 08:05:10,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:10,675 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:10,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:10,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:05:10,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:10,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash 469997188, now seen corresponding path program 1 times [2023-11-19 08:05:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164387756] [2023-11-19 08:05:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:11,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:11,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476349461] [2023-11-19 08:05:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:11,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:11,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:11,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:11,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:05:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:11,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:05:11,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 08:05:11,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:11,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164387756] [2023-11-19 08:05:11,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476349461] [2023-11-19 08:05:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476349461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563336241] [2023-11-19 08:05:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:11,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:11,362 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:11,445 INFO L93 Difference]: Finished difference Result 183 states and 262 transitions. [2023-11-19 08:05:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-19 08:05:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:11,452 INFO L225 Difference]: With dead ends: 183 [2023-11-19 08:05:11,452 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 08:05:11,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:11,456 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 21 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:11,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 359 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 08:05:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2023-11-19 08:05:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2023-11-19 08:05:11,489 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 104 [2023-11-19 08:05:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:11,491 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2023-11-19 08:05:11,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2023-11-19 08:05:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 08:05:11,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:11,495 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:11,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:11,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:11,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1150055558, now seen corresponding path program 1 times [2023-11-19 08:05:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:11,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525517184] [2023-11-19 08:05:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:11,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121527802] [2023-11-19 08:05:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:11,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:11,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:11,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:05:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:11,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:05:12,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 08:05:12,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525517184] [2023-11-19 08:05:12,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121527802] [2023-11-19 08:05:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121527802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577201903] [2023-11-19 08:05:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:12,034 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:12,115 INFO L93 Difference]: Finished difference Result 179 states and 254 transitions. [2023-11-19 08:05:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-19 08:05:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:12,119 INFO L225 Difference]: With dead ends: 179 [2023-11-19 08:05:12,120 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 08:05:12,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:12,125 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:12,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 356 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:05:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 08:05:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2023-11-19 08:05:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2023-11-19 08:05:12,156 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 104 [2023-11-19 08:05:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:12,158 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2023-11-19 08:05:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2023-11-19 08:05:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 08:05:12,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:12,164 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:12,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:12,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:05:12,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:12,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1151902600, now seen corresponding path program 1 times [2023-11-19 08:05:12,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:12,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122508384] [2023-11-19 08:05:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:12,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:12,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:12,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700811908] [2023-11-19 08:05:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:12,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:12,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:12,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:12,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:05:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:12,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-19 08:05:12,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:13,329 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 [2023-11-19 08:05:14,666 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 32 treesize of output 16 [2023-11-19 08:05:15,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:15,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:15,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-19 08:05:16,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:16,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:16,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-19 08:05:17,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:17,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:17,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-19 08:05:18,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:18,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:18,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-19 08:05:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:18,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 72 [2023-11-19 08:05:19,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 111 [2023-11-19 08:05:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-19 08:05:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-19 08:05:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-19 08:05:19,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 92 [2023-11-19 08:05:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-19 08:05:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:19,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-11-19 08:05:20,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 92 [2023-11-19 08:05:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:20,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 240 treesize of output 116 [2023-11-19 08:05:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 1 proven. 246 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:05:20,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:20,786 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse0 (mod (+ (select (select .cse1 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse1 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (< 32767 .cse0) (not (= (+ 65536 (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) .cse0)))))) (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse2 (select (select .cse4 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) (.cse3 (mod (+ (select (select .cse4 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse4 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (= (+ 65536 .cse2) .cse3) (= .cse2 .cse3))))) (forall ((v_ArrVal_398 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse6 (mod (+ (select (select .cse5 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (select (select .cse5 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset)) 65536))) (or (= (+ 65536 (select (select .cse5 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)) .cse6) (< .cse6 32768)))))) is different from false [2023-11-19 08:05:20,981 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse1 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse0 (mod (+ (select (select .cse1 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse1 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536))) (or (< 32767 .cse0) (not (= .cse0 (+ 65536 (select (select .cse1 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)))))))) (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse3 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse2 (mod (+ (select (select .cse3 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse3 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536))) (or (< .cse2 32768) (= .cse2 (+ 65536 (select (select .cse3 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))))) (forall ((v_ArrVal_395 (Array Int Int)) (v_ArrVal_397 (Array Int Int)) (v_ArrVal_396 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (let ((.cse6 (store (store (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_396) c_~var_1_13_Pointer~0.base v_ArrVal_397) c_~var_1_14_Pointer~0.base v_ArrVal_395) c_~var_1_8_Pointer~0.base v_ArrVal_398))) (let ((.cse5 (mod (+ (select (select .cse6 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse6 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) 65536)) (.cse4 (select (select .cse6 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))) (or (= .cse4 .cse5) (= .cse5 (+ 65536 .cse4))))))) is different from false [2023-11-19 08:05:34,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122508384] [2023-11-19 08:05:34,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700811908] [2023-11-19 08:05:34,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700811908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:34,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-19 08:05:34,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685680306] [2023-11-19 08:05:34,337 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:34,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 08:05:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 08:05:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=977, Unknown=11, NotChecked=130, Total=1260 [2023-11-19 08:05:34,341 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 28 states, 26 states have (on average 2.730769230769231) internal successors, (71), 24 states have internal predecessors, (71), 8 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-19 08:05:40,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:40,830 INFO L93 Difference]: Finished difference Result 322 states and 449 transitions. [2023-11-19 08:05:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 08:05:40,834 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.730769230769231) internal successors, (71), 24 states have internal predecessors, (71), 8 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 104 [2023-11-19 08:05:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:40,836 INFO L225 Difference]: With dead ends: 322 [2023-11-19 08:05:40,837 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 08:05:40,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=574, Invalid=2729, Unknown=11, NotChecked=226, Total=3540 [2023-11-19 08:05:40,840 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 933 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:40,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1054 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 08:05:40,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 08:05:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 116. [2023-11-19 08:05:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 100 states have (on average 1.36) internal successors, (136), 100 states have internal predecessors, (136), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2023-11-19 08:05:40,886 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 104 [2023-11-19 08:05:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:40,887 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2023-11-19 08:05:40,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.730769230769231) internal successors, (71), 24 states have internal predecessors, (71), 8 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-19 08:05:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2023-11-19 08:05:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 08:05:40,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:40,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:40,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:41,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:41,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -653535734, now seen corresponding path program 1 times [2023-11-19 08:05:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055655524] [2023-11-19 08:05:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:41,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237139342] [2023-11-19 08:05:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:41,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:41,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:05:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:41,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:05:41,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 08:05:41,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055655524] [2023-11-19 08:05:41,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237139342] [2023-11-19 08:05:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237139342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545337271] [2023-11-19 08:05:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:41,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:41,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:41,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:41,442 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:41,478 INFO L93 Difference]: Finished difference Result 264 states and 363 transitions. [2023-11-19 08:05:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:41,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-19 08:05:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:41,482 INFO L225 Difference]: With dead ends: 264 [2023-11-19 08:05:41,482 INFO L226 Difference]: Without dead ends: 151 [2023-11-19 08:05:41,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:41,485 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 59 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:41,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-19 08:05:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 114. [2023-11-19 08:05:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.346938775510204) internal successors, (132), 98 states have internal predecessors, (132), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 156 transitions. [2023-11-19 08:05:41,522 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 156 transitions. Word has length 104 [2023-11-19 08:05:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:41,523 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 156 transitions. [2023-11-19 08:05:41,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 156 transitions. [2023-11-19 08:05:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 08:05:41,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:41,525 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:41,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:41,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:41,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1210239945, now seen corresponding path program 1 times [2023-11-19 08:05:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427752209] [2023-11-19 08:05:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:41,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912839525] [2023-11-19 08:05:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:41,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:41,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:05:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:42,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 08:05:42,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:43,368 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 [2023-11-19 08:05:43,839 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 8 treesize of output 1 [2023-11-19 08:05:44,199 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 8 treesize of output 1 [2023-11-19 08:05:44,632 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 8 treesize of output 1 [2023-11-19 08:05:44,890 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 8 treesize of output 1 [2023-11-19 08:05:44,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:44,968 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 15 treesize of output 15 [2023-11-19 08:05:45,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-19 08:05:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:45,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:45,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:45,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 28 [2023-11-19 08:05:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-19 08:05:45,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:47,642 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_589 (Array Int Int)) (~var_1_6_Pointer~0.offset Int) (v_ArrVal_591 (Array Int Int)) (v_ArrVal_590 (Array Int Int)) (v_ArrVal_592 (Array Int Int))) (let ((.cse0 (store (store (store (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base (store (select |c_#memory_int| c_~var_1_6_Pointer~0.base) ~var_1_6_Pointer~0.offset (select (select |c_#memory_int| c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset))) c_~var_1_11_Pointer~0.base v_ArrVal_590) c_~var_1_13_Pointer~0.base v_ArrVal_589) c_~var_1_14_Pointer~0.base v_ArrVal_591) c_~var_1_8_Pointer~0.base v_ArrVal_592))) (= (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) ~var_1_6_Pointer~0.offset) 65536) (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 65536)))) is different from false [2023-11-19 08:05:49,714 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_589 (Array Int Int)) (~var_1_6_Pointer~0.offset Int) (v_ArrVal_591 (Array Int Int)) (v_ArrVal_590 (Array Int Int)) (v_ArrVal_592 (Array Int Int)) (v_ArrVal_587 (Array Int Int))) (let ((.cse0 (store (store (store (store (let ((.cse1 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_587))) (store .cse1 c_~var_1_6_Pointer~0.base (store (select .cse1 c_~var_1_6_Pointer~0.base) ~var_1_6_Pointer~0.offset (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset)))) c_~var_1_11_Pointer~0.base v_ArrVal_590) c_~var_1_13_Pointer~0.base v_ArrVal_589) c_~var_1_14_Pointer~0.base v_ArrVal_591) c_~var_1_8_Pointer~0.base v_ArrVal_592))) (= (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 65536) (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) ~var_1_6_Pointer~0.offset) 65536)))) is different from false [2023-11-19 08:05:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427752209] [2023-11-19 08:05:49,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912839525] [2023-11-19 08:05:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912839525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:49,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:49,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 08:05:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565180971] [2023-11-19 08:05:49,761 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:49,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:05:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:49,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:05:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=8, NotChecked=74, Total=462 [2023-11-19 08:05:49,763 INFO L87 Difference]: Start difference. First operand 114 states and 156 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-19 08:05:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:51,895 INFO L93 Difference]: Finished difference Result 307 states and 423 transitions. [2023-11-19 08:05:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:05:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 108 [2023-11-19 08:05:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:51,898 INFO L225 Difference]: With dead ends: 307 [2023-11-19 08:05:51,898 INFO L226 Difference]: Without dead ends: 196 [2023-11-19 08:05:51,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=8, NotChecked=114, Total=992 [2023-11-19 08:05:51,900 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 682 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:51,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 483 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:05:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-19 08:05:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2023-11-19 08:05:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 126 states have (on average 1.373015873015873) internal successors, (173), 126 states have internal predecessors, (173), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 197 transitions. [2023-11-19 08:05:51,919 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 197 transitions. Word has length 108 [2023-11-19 08:05:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:51,919 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 197 transitions. [2023-11-19 08:05:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-19 08:05:51,920 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 197 transitions. [2023-11-19 08:05:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 08:05:51,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:51,922 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:51,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:05:52,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:52,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1212102850, now seen corresponding path program 1 times [2023-11-19 08:05:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:52,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078892476] [2023-11-19 08:05:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:52,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:52,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400711372] [2023-11-19 08:05:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:52,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:52,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:52,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:52,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:05:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:52,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 08:05:52,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:55,094 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 [2023-11-19 08:05:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:55,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:55,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:55,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:55,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-19 08:05:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 08:05:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 08:05:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 10 [2023-11-19 08:05:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-19 08:05:55,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:55,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078892476] [2023-11-19 08:05:55,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:55,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400711372] [2023-11-19 08:05:55,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400711372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:55,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:05:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857799264] [2023-11-19 08:05:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:55,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:05:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:05:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:05:55,974 INFO L87 Difference]: Start difference. First operand 142 states and 197 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:58,233 INFO L93 Difference]: Finished difference Result 361 states and 503 transitions. [2023-11-19 08:05:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:05:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2023-11-19 08:05:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:58,243 INFO L225 Difference]: With dead ends: 361 [2023-11-19 08:05:58,243 INFO L226 Difference]: Without dead ends: 222 [2023-11-19 08:05:58,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:05:58,245 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 351 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:58,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 440 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 08:05:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-19 08:05:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 169. [2023-11-19 08:05:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 153 states have (on average 1.3986928104575163) internal successors, (214), 153 states have internal predecessors, (214), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 238 transitions. [2023-11-19 08:05:58,278 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 238 transitions. Word has length 110 [2023-11-19 08:05:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 238 transitions. [2023-11-19 08:05:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 08:05:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 238 transitions. [2023-11-19 08:05:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 08:05:58,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:58,283 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:58,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 08:05:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:58,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:58,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1459583004, now seen corresponding path program 1 times [2023-11-19 08:05:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611565243] [2023-11-19 08:05:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:58,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100236950] [2023-11-19 08:05:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:58,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:58,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:58,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:58,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_217c8023-b238-4faa-81e5-99176799cc3d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:05:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:58,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 08:05:58,885 INFO L285 TraceCheckSpWp]: Computing forward predicates...