./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/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_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/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_4986282f-f664-4683-95fb-f7ae91530825/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 b82a2feeff1bf45727428077ccadb7452462e1099276a8b897477a025c2c05e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:21,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:21,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:21,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:21,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:21,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:21,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:21,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:21,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:21,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:21,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:21,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:21,818 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:21,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:21,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:21,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:21,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:21,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:21,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:21,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:21,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:21,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:21,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:21,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:21,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:21,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:21,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:21,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:21,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:21,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:21,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:21,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:21,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:21,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:21,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:21,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:21,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:21,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:21,838 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:21,838 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_4986282f-f664-4683-95fb-f7ae91530825/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b82a2feeff1bf45727428077ccadb7452462e1099276a8b897477a025c2c05e5 [2023-11-19 07:37:22,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:22,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:22,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:22,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:22,211 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:22,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i [2023-11-19 07:37:25,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:25,811 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:25,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i [2023-11-19 07:37:25,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/data/e87e42871/89d53715948d4589925537b29ed19db3/FLAGe11711cbf [2023-11-19 07:37:25,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/data/e87e42871/89d53715948d4589925537b29ed19db3 [2023-11-19 07:37:25,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:25,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:25,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:25,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:25,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:25,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:25" (1/1) ... [2023-11-19 07:37:25,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156bc952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:25, skipping insertion in model container [2023-11-19 07:37:25,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:25" (1/1) ... [2023-11-19 07:37:25,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:26,114 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_4986282f-f664-4683-95fb-f7ae91530825/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i[916,929] [2023-11-19 07:37:26,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:26,243 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:26,270 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_4986282f-f664-4683-95fb-f7ae91530825/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-37.i[916,929] [2023-11-19 07:37:26,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:26,351 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:26,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26 WrapperNode [2023-11-19 07:37:26,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:26,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:26,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:26,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:26,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,457 INFO L138 Inliner]: procedures = 29, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 458 [2023-11-19 07:37:26,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:26,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:26,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:26,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:26,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:26,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:26,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:26,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:26,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (1/1) ... [2023-11-19 07:37:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:26,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:26,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:37:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:37:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:37:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:37:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:37:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:26,791 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:26,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:27,497 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:27,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:27,508 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:27,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27 BoogieIcfgContainer [2023-11-19 07:37:27,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:27,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:27,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:27,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:27,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:25" (1/3) ... [2023-11-19 07:37:27,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d64af99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:26" (2/3) ... [2023-11-19 07:37:27,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d64af99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:27, skipping insertion in model container [2023-11-19 07:37:27,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:27" (3/3) ... [2023-11-19 07:37:27,524 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-37.i [2023-11-19 07:37:27,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:27,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:27,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:27,614 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;@aa1da28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:27,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:37:27,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:27,641 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:27,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:27,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash -851348922, now seen corresponding path program 1 times [2023-11-19 07:37:27,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583865140] [2023-11-19 07:37:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:27,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:28,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583865140] [2023-11-19 07:37:28,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:37:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587380819] [2023-11-19 07:37:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:28,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:28,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:28,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:28,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:28,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:37:28,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-19 07:37:28,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:28,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587380819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:28,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822355382] [2023-11-19 07:37:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:37:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:37:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:37:28,572 INFO L87 Difference]: Start difference. First operand has 103 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 07:37:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:28,614 INFO L93 Difference]: Finished difference Result 199 states and 313 transitions. [2023-11-19 07:37:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:37:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2023-11-19 07:37:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:28,624 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:37:28,625 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 07:37:28,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 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 07:37:28,633 INFO L413 NwaCegarLoop]: 145 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, 145 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 07:37:28,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 07:37:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-19 07:37:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2023-11-19 07:37:28,687 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 124 [2023-11-19 07:37:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:28,687 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2023-11-19 07:37:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 07:37:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2023-11-19 07:37:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:37:28,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:28,693 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:28,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:37:28,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:37:28,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:28,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1371063400, now seen corresponding path program 1 times [2023-11-19 07:37:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449763531] [2023-11-19 07:37:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:28,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:29,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423754938] [2023-11-19 07:37:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:29,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:29,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:29,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:29,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:29,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:29,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:29,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:29,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449763531] [2023-11-19 07:37:29,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:29,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423754938] [2023-11-19 07:37:29,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423754938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:29,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:29,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643479327] [2023-11-19 07:37:29,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:29,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:29,453 INFO L87 Difference]: Start difference. First operand 99 states and 145 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:29,517 INFO L93 Difference]: Finished difference Result 203 states and 298 transitions. [2023-11-19 07:37:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-19 07:37:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:29,521 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:37:29,522 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:37:29,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 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 07:37:29,525 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 12 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:29,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 420 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:37:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2023-11-19 07:37:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-11-19 07:37:29,544 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 124 [2023-11-19 07:37:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:29,546 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-11-19 07:37:29,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-11-19 07:37:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:37:29,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:29,550 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:29,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:37:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:29,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 403943962, now seen corresponding path program 1 times [2023-11-19 07:37:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042051886] [2023-11-19 07:37:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:29,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781004152] [2023-11-19 07:37:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:29,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:29,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:30,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:30,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:30,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:30,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042051886] [2023-11-19 07:37:30,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781004152] [2023-11-19 07:37:30,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781004152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520128387] [2023-11-19 07:37:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:30,255 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:30,332 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2023-11-19 07:37:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-19 07:37:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:30,342 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:37:30,343 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:37:30,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 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 07:37:30,352 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 3 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:30,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 419 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:37:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-19 07:37:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.3837209302325582) internal successors, (119), 86 states have internal predecessors, (119), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2023-11-19 07:37:30,371 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 124 [2023-11-19 07:37:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:30,373 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2023-11-19 07:37:30,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2023-11-19 07:37:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:37:30,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:30,377 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:30,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:37:30,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:30,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash 405791004, now seen corresponding path program 1 times [2023-11-19 07:37:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619820221] [2023-11-19 07:37:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:30,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143988736] [2023-11-19 07:37:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:30,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:30,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:30,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:37:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:30,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:37:30,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:31,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:31,888 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 07:37:31,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:31,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:31,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:31,950 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 07:37:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,027 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 07:37:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:32,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619820221] [2023-11-19 07:37:32,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143988736] [2023-11-19 07:37:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143988736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:32,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:32,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:37:32,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400814699] [2023-11-19 07:37:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:32,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:37:32,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:37:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:37:32,059 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:32,377 INFO L93 Difference]: Finished difference Result 205 states and 297 transitions. [2023-11-19 07:37:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2023-11-19 07:37:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:32,383 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:37:32,383 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:37:32,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:32,392 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 188 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:32,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 343 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:37:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:37:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-19 07:37:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2023-11-19 07:37:32,425 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 124 [2023-11-19 07:37:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:32,428 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2023-11-19 07:37:32,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2023-11-19 07:37:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:37:32,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:32,439 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:32,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:32,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:32,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:32,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:32,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1387440455, now seen corresponding path program 1 times [2023-11-19 07:37:32,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:32,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444483185] [2023-11-19 07:37:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:32,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:32,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111519279] [2023-11-19 07:37:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:32,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:37:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:33,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:37:33,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:34,324 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 07:37:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:34,719 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 16 treesize of output 11 [2023-11-19 07:37:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:34,972 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 16 treesize of output 11 [2023-11-19 07:37:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:35,193 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 16 treesize of output 11 [2023-11-19 07:37:35,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:35,330 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 16 treesize of output 11 [2023-11-19 07:37:35,502 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:37:35,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2023-11-19 07:37:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:35,528 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 07:37:35,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-11-19 07:37:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 1 proven. 347 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:37:35,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:35,577 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_571 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (< 0 (+ (select (select (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store (select |c_#memory_int| c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset (select (select |c_#memory_int| c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) c_~var_1_16_Pointer~0.base v_ArrVal_571) c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 1))) is different from false [2023-11-19 07:37:35,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:35,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444483185] [2023-11-19 07:37:35,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:35,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111519279] [2023-11-19 07:37:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111519279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:35,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:35,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:37:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892926784] [2023-11-19 07:37:35,625 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:35,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:37:35,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:37:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2023-11-19 07:37:35,627 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:37:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:36,571 INFO L93 Difference]: Finished difference Result 213 states and 302 transitions. [2023-11-19 07:37:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:37:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 127 [2023-11-19 07:37:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:36,574 INFO L225 Difference]: With dead ends: 213 [2023-11-19 07:37:36,574 INFO L226 Difference]: Without dead ends: 113 [2023-11-19 07:37:36,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=373, Unknown=1, NotChecked=42, Total=552 [2023-11-19 07:37:36,576 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 247 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:36,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 443 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:37:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-19 07:37:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-11-19 07:37:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.348314606741573) internal successors, (120), 89 states have internal predecessors, (120), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 150 transitions. [2023-11-19 07:37:36,614 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 150 transitions. Word has length 127 [2023-11-19 07:37:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:36,620 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 150 transitions. [2023-11-19 07:37:36,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-19 07:37:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 150 transitions. [2023-11-19 07:37:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:37:36,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:36,624 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:36,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:36,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:36,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 877967365, now seen corresponding path program 1 times [2023-11-19 07:37:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262814335] [2023-11-19 07:37:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:36,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143369194] [2023-11-19 07:37:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:36,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:36,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:36,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:37:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:37,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:37:37,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:38,752 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:37:38,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-19 07:37:38,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:38,789 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-19 07:37:38,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-19 07:37:38,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 07:37:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:38,896 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 16 treesize of output 11 [2023-11-19 07:37:38,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:38,935 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 16 treesize of output 11 [2023-11-19 07:37:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:38,982 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 16 treesize of output 11 [2023-11-19 07:37:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:39,018 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 16 treesize of output 11 [2023-11-19 07:37:39,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:37:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:39,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:39,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262814335] [2023-11-19 07:37:39,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:39,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143369194] [2023-11-19 07:37:39,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143369194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:37:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183039153] [2023-11-19 07:37:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:39,071 INFO L87 Difference]: Start difference. First operand 107 states and 150 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:39,551 INFO L93 Difference]: Finished difference Result 213 states and 299 transitions. [2023-11-19 07:37:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:37:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-19 07:37:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:39,556 INFO L225 Difference]: With dead ends: 213 [2023-11-19 07:37:39,556 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 07:37:39,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:37:39,557 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 193 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:39,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 286 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 07:37:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2023-11-19 07:37:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 149 transitions. [2023-11-19 07:37:39,607 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 149 transitions. Word has length 127 [2023-11-19 07:37:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:39,608 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 149 transitions. [2023-11-19 07:37:39,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 149 transitions. [2023-11-19 07:37:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:37:39,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:39,615 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:39,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:39,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:39,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:39,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -401896313, now seen corresponding path program 1 times [2023-11-19 07:37:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125467756] [2023-11-19 07:37:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316302156] [2023-11-19 07:37:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:39,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:39,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:40,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-19 07:37:40,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:40,574 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 07:37:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:41,750 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 18 treesize of output 13 [2023-11-19 07:37:42,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:42,515 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 18 treesize of output 13 [2023-11-19 07:37:43,119 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 25 treesize of output 13 [2023-11-19 07:37:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:43,788 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 25 treesize of output 23 [2023-11-19 07:37:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,279 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 25 treesize of output 23 [2023-11-19 07:37:44,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,689 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 25 treesize of output 23 [2023-11-19 07:37:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:44,968 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 25 treesize of output 23 [2023-11-19 07:37:45,309 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2023-11-19 07:37:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:45,320 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 36 treesize of output 35 [2023-11-19 07:37:45,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:45,624 INFO L349 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2023-11-19 07:37:45,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 34 [2023-11-19 07:37:45,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 07:37:45,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-11-19 07:37:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:37:45,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:45,754 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store (select |c_#memory_int| c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset (select (select |c_#memory_int| c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) c_~var_1_16_Pointer~0.base v_ArrVal_812))) (< (select (select .cse0 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) (mod (select (select .cse0 c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 65536)))) is different from false [2023-11-19 07:37:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125467756] [2023-11-19 07:37:45,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316302156] [2023-11-19 07:37:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316302156] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:45,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-11-19 07:37:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131029244] [2023-11-19 07:37:45,771 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:45,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 07:37:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:37:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=523, Unknown=1, NotChecked=46, Total=650 [2023-11-19 07:37:45,778 INFO L87 Difference]: Start difference. First operand 107 states and 149 transitions. Second operand has 22 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-19 07:37:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:48,485 INFO L93 Difference]: Finished difference Result 225 states and 307 transitions. [2023-11-19 07:37:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:37:48,493 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 127 [2023-11-19 07:37:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:48,495 INFO L225 Difference]: With dead ends: 225 [2023-11-19 07:37:48,495 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 07:37:48,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=279, Invalid=1206, Unknown=1, NotChecked=74, Total=1560 [2023-11-19 07:37:48,498 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 209 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 118 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:48,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 727 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1072 Invalid, 5 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:37:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 07:37:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2023-11-19 07:37:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2023-11-19 07:37:48,517 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 127 [2023-11-19 07:37:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:48,518 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2023-11-19 07:37:48,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-19 07:37:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2023-11-19 07:37:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:37:48,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:48,520 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:48,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:48,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:48,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:48,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash -339856699, now seen corresponding path program 1 times [2023-11-19 07:37:48,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:48,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186573187] [2023-11-19 07:37:48,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:48,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:48,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:48,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943020371] [2023-11-19 07:37:48,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:48,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:48,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:48,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:49,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 07:37:49,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:50,631 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:37:50,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-19 07:37:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,670 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-19 07:37:50,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-19 07:37:50,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-19 07:37:50,786 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 24 treesize of output 22 [2023-11-19 07:37:50,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,824 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 24 treesize of output 22 [2023-11-19 07:37:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:50,868 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 24 treesize of output 22 [2023-11-19 07:37:50,923 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 24 treesize of output 22 [2023-11-19 07:37:51,009 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 30 treesize of output 14 [2023-11-19 07:37:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:51,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:51,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186573187] [2023-11-19 07:37:51,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943020371] [2023-11-19 07:37:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943020371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:37:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754213910] [2023-11-19 07:37:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:51,028 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:51,606 INFO L93 Difference]: Finished difference Result 227 states and 305 transitions. [2023-11-19 07:37:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-19 07:37:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:51,612 INFO L225 Difference]: With dead ends: 227 [2023-11-19 07:37:51,612 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 07:37:51,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:37:51,614 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 289 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:51,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 339 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 351 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 07:37:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-19 07:37:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 95 states have internal predecessors, (123), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2023-11-19 07:37:51,632 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 127 [2023-11-19 07:37:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2023-11-19 07:37:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2023-11-19 07:37:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 07:37:51,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:51,635 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:51,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:51,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:51,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1350973949, now seen corresponding path program 1 times [2023-11-19 07:37:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:51,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731603901] [2023-11-19 07:37:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:51,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909422948] [2023-11-19 07:37:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:51,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:51,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:51,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:52,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-19 07:37:52,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:53,243 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 07:37:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,281 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 07:37:53,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,331 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 07:37:53,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:53,369 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 07:37:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-19 07:37:53,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:53,782 INFO L349 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-11-19 07:37:53,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 46 [2023-11-19 07:37:53,796 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-19 07:37:53,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2242 treesize of output 2106 [2023-11-19 07:37:53,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:53,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1038 treesize of output 918 [2023-11-19 07:37:53,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:53,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 910 treesize of output 886 [2023-11-19 07:37:54,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:37:54,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 878 treesize of output 822 [2023-11-19 07:37:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731603901] [2023-11-19 07:37:56,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909422948] [2023-11-19 07:37:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909422948] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:56,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:56,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2023-11-19 07:37:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000593557] [2023-11-19 07:37:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:37:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=234, Unknown=15, NotChecked=0, Total=306 [2023-11-19 07:37:56,201 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,770 INFO L93 Difference]: Finished difference Result 229 states and 305 transitions. [2023-11-19 07:37:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:37:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-11-19 07:37:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:56,779 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:37:56,779 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 07:37:56,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=349, Unknown=15, NotChecked=0, Total=462 [2023-11-19 07:37:56,780 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 449 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:56,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 423 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 07:37:56,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-11-19 07:37:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 95 states have internal predecessors, (122), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2023-11-19 07:37:56,802 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 127 [2023-11-19 07:37:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:56,803 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2023-11-19 07:37:56,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2023-11-19 07:37:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:37:56,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:56,805 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:56,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:57,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:57,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash 557360958, now seen corresponding path program 1 times [2023-11-19 07:37:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064075018] [2023-11-19 07:37:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606349705] [2023-11-19 07:37:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:57,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:57,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:57,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4986282f-f664-4683-95fb-f7ae91530825/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:37:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-19 07:37:57,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:57,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 07:37:59,877 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 07:38:00,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:00,758 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 16 treesize of output 11 [2023-11-19 07:38:01,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:38:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:02,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:02,433 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 32 treesize of output 28 [2023-11-19 07:38:02,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:02,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:02,796 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 32 treesize of output 28 [2023-11-19 07:38:03,256 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 41 [2023-11-19 07:38:03,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,271 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 43 treesize of output 40 [2023-11-19 07:38:03,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,540 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 50 treesize of output 45 [2023-11-19 07:38:03,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,663 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 50 treesize of output 45 [2023-11-19 07:38:03,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,807 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 50 treesize of output 45 [2023-11-19 07:38:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,975 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-19 07:38:03,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 116 [2023-11-19 07:38:04,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 21 [2023-11-19 07:38:04,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-11-19 07:38:04,109 INFO L349 Elim1Store]: treesize reduction 56, result has 13.8 percent of original size [2023-11-19 07:38:04,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 107 [2023-11-19 07:38:04,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2023-11-19 07:38:06,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:06,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:06,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:06,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 504 treesize of output 380 [2023-11-19 07:38:06,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 319 [2023-11-19 07:38:06,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 316 treesize of output 264 [2023-11-19 07:38:06,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:38:06,919 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 07:38:06,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 58 [2023-11-19 07:38:07,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:07,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 196 [2023-11-19 07:38:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 32 proven. 335 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-19 07:38:07,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:07,891 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1172 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse2 (mod (+ (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (<= (mod (let ((.cse0 (store .cse1 c_~var_1_11_Pointer~0.base (store (select .cse1 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse2)))) (+ (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse0 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) 127)) (< 127 .cse2))))) (forall ((v_ArrVal_1172 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse5 (mod (+ (select (select .cse4 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (<= 128 (mod (let ((.cse3 (store .cse4 c_~var_1_11_Pointer~0.base (store (select .cse4 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse5))))) (+ (select (select .cse3 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse3 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset))) 256))) (< .cse5 128))))) (forall ((v_ArrVal_1172 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse6 (mod (+ (select (select .cse8 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse8 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (= .cse6 (mod (let ((.cse7 (store .cse8 c_~var_1_11_Pointer~0.base (store (select .cse8 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse6))))) (+ (select (select .cse7 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse7 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset))) 256))) (< .cse6 128))))) (forall ((v_ArrVal_1172 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse9 (mod (+ (select (select .cse11 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse11 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (< 127 .cse9) (forall ((~var_1_11_Pointer~0.offset Int)) (= (mod (let ((.cse10 (store .cse11 c_~var_1_11_Pointer~0.base (store (select .cse11 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse9)))) (+ (select (select .cse10 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse10 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) .cse9))))))) is different from false [2023-11-19 07:38:08,039 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse2 (mod (+ (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (<= 128 (mod (let ((.cse0 (store .cse1 c_~var_1_11_Pointer~0.base (store (select .cse1 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse2))))) (+ (select (select .cse0 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse0 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256))) (< .cse2 128))))) (forall ((v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse5 (mod (+ (select (select .cse4 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (<= (mod (let ((.cse3 (store .cse4 c_~var_1_11_Pointer~0.base (store (select .cse4 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse5)))) (+ (select (select .cse3 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse3 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) 127)) (< 127 .cse5))))) (forall ((v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse6 (mod (+ (select (select .cse8 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse8 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (= .cse6 (mod (let ((.cse7 (store .cse8 c_~var_1_11_Pointer~0.base (store (select .cse8 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse6)))) (+ (select (select .cse7 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse7 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256))) (< 127 .cse6))))) (forall ((v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse11 (store (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse9 (mod (+ (select (select .cse11 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse11 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (= .cse9 (mod (let ((.cse10 (store .cse11 c_~var_1_11_Pointer~0.base (store (select .cse11 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse9))))) (+ (select (select .cse10 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse10 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256))) (< .cse9 128)))))) is different from false [2023-11-19 07:38:08,140 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse0 (mod (+ (select (select .cse2 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse2 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)) 256))) (or (< .cse0 128) (forall ((~var_1_11_Pointer~0.offset Int)) (= (mod (let ((.cse1 (store .cse2 c_~var_1_11_Pointer~0.base (store (select .cse2 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse0))))) (+ (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) .cse0)))))) (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse5 (store (store (store |c_#memory_int| c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse3 (mod (+ (select (select .cse5 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse5 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)) 256))) (or (< .cse3 128) (forall ((~var_1_11_Pointer~0.offset Int)) (<= 128 (mod (let ((.cse4 (store .cse5 c_~var_1_11_Pointer~0.base (store (select .cse5 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse3))))) (+ (select (select .cse4 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256))))))) (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse8 (store (store (store |c_#memory_int| c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse6 (mod (+ (select (select .cse8 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse8 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)) 256))) (or (< 127 .cse6) (forall ((~var_1_11_Pointer~0.offset Int)) (<= (mod (let ((.cse7 (store .cse8 c_~var_1_11_Pointer~0.base (store (select .cse8 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse6)))) (+ (select (select .cse7 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse7 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset))) 256) 127)))))) (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse10 (store (store (store |c_#memory_int| c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse11 (mod (+ (select (select .cse10 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse10 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset)) 256))) (or (forall ((~var_1_11_Pointer~0.offset Int)) (= (mod (let ((.cse9 (store .cse10 c_~var_1_11_Pointer~0.base (store (select .cse10 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse11)))) (+ (select (select .cse9 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) (select (select .cse9 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset))) 256) .cse11)) (< 127 .cse11)))))) is different from false [2023-11-19 07:38:09,532 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| c_~var_1_14_Pointer~0.base)) (.cse5 (select (select |c_#memory_int| c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (and (forall ((v_ArrVal_1169 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (let ((.cse3 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse4 ~var_1_14_Pointer~0.offset .cse5)) c_~var_1_16_Pointer~0.base v_ArrVal_1169))) (or (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse2 (store (store (store .cse3 c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse0 (mod (+ (select (select .cse2 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse2 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (< .cse0 128) (forall ((~var_1_11_Pointer~0.offset Int)) (<= 128 (mod (let ((.cse1 (store .cse2 c_~var_1_11_Pointer~0.base (store (select .cse2 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse0))))) (+ (select (select .cse1 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse1 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256))))))) (< (select (select .cse3 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 0)))) (forall ((v_ArrVal_1169 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse4 ~var_1_14_Pointer~0.offset .cse5)) c_~var_1_16_Pointer~0.base v_ArrVal_1169))) (or (< (select (select .cse6 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 0) (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse9 (store (store (store .cse6 c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse7 (mod (+ (select (select .cse9 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse9 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (< 127 .cse7) (forall ((~var_1_11_Pointer~0.offset Int)) (= (mod (let ((.cse8 (store .cse9 c_~var_1_11_Pointer~0.base (store (select .cse9 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse7)))) (+ (select (select .cse8 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse8 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) .cse7))))))))) (forall ((v_ArrVal_1169 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (let ((.cse13 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse4 ~var_1_14_Pointer~0.offset .cse5)) c_~var_1_16_Pointer~0.base v_ArrVal_1169))) (or (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse12 (store (store (store .cse13 c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse10 (mod (+ (select (select .cse12 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse12 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (< .cse10 128) (forall ((~var_1_11_Pointer~0.offset Int)) (= (mod (let ((.cse11 (store .cse12 c_~var_1_11_Pointer~0.base (store (select .cse12 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset (+ (- 256) .cse10))))) (+ (select (select .cse11 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse11 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) .cse10)))))) (< (select (select .cse13 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 0)))) (forall ((v_ArrVal_1169 (Array Int Int)) (~var_1_14_Pointer~0.offset Int)) (let ((.cse17 (store (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse4 ~var_1_14_Pointer~0.offset .cse5)) c_~var_1_16_Pointer~0.base v_ArrVal_1169))) (or (forall ((v_ArrVal_1170 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1171 (Array Int Int))) (let ((.cse16 (store (store (store .cse17 c_~var_1_7_Pointer~0.base v_ArrVal_1170) c_~var_1_15_Pointer~0.base v_ArrVal_1171) c_~var_1_1_Pointer~0.base v_ArrVal_1172))) (let ((.cse14 (mod (+ (select (select .cse16 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse16 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 256))) (or (< 127 .cse14) (forall ((~var_1_11_Pointer~0.offset Int)) (<= (mod (let ((.cse15 (store .cse16 c_~var_1_11_Pointer~0.base (store (select .cse16 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset .cse14)))) (+ (select (select .cse15 c_~var_1_10_Pointer~0.base) c_~var_1_10_Pointer~0.offset) (select (select .cse15 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) 256) 127)))))) (< (select (select .cse17 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 0)))))) is different from false [2023-11-19 07:38:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064075018] [2023-11-19 07:38:09,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:38:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606349705] [2023-11-19 07:38:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606349705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:09,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:09,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-11-19 07:38:09,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393687471] [2023-11-19 07:38:09,783 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:09,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-19 07:38:09,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-19 07:38:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1175, Unknown=4, NotChecked=292, Total=1640 [2023-11-19 07:38:09,786 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand has 33 states, 30 states have (on average 2.7) internal successors, (81), 26 states have internal predecessors, (81), 8 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15)