./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a41aa9d8768b1b5dd89ea1dccd189b98246dddc52870a67830fa0c3c6660983c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:59,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:59,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:15:59,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:59,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:59,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:59,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:59,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:59,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:15:59,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:15:59,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:59,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:59,848 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:59,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:59,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:15:59,851 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:15:59,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:59,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:15:59,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:59,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:15:59,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:15:59,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:15:59,854 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:15:59,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:15:59,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:59,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:59,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:59,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:15:59,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:15:59,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:59,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:15:59,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:15:59,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:59,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:15:59,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:15:59,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:15:59,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:15:59,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:15:59,862 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:15:59,862 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_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41aa9d8768b1b5dd89ea1dccd189b98246dddc52870a67830fa0c3c6660983c [2023-11-06 21:16:00,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:16:00,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:16:00,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:16:00,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:16:00,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:16:00,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2023-11-06 21:16:03,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:16:03,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:16:03,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2023-11-06 21:16:03,876 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/data/06d29858d/58183a7afbf84d57bf70844b77ac1145/FLAG9ef2ab6ba [2023-11-06 21:16:03,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/data/06d29858d/58183a7afbf84d57bf70844b77ac1145 [2023-11-06 21:16:03,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:16:03,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:16:03,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:16:03,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:16:03,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:16:03,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:03" (1/1) ... [2023-11-06 21:16:03,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487dd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:03, skipping insertion in model container [2023-11-06 21:16:03,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:03" (1/1) ... [2023-11-06 21:16:03,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:16:04,145 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_038afb11-86fa-4c42-b762-ee317555178f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i[917,930] [2023-11-06 21:16:04,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:16:04,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:16:04,247 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_038afb11-86fa-4c42-b762-ee317555178f/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i[917,930] [2023-11-06 21:16:04,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:16:04,322 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:16:04,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04 WrapperNode [2023-11-06 21:16:04,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:16:04,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:16:04,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:16:04,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:16:04,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,416 INFO L138 Inliner]: procedures = 26, calls = 156, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 396 [2023-11-06 21:16:04,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:16:04,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:16:04,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:16:04,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:16:04,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:16:04,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:16:04,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:16:04,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:16:04,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (1/1) ... [2023-11-06 21:16:04,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:16:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:04,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:16:04,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:16:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:16:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:16:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:16:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:16:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:16:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:16:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:16:04,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:16:04,841 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:16:04,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:16:05,622 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:16:05,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:16:05,632 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:16:05,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:05 BoogieIcfgContainer [2023-11-06 21:16:05,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:16:05,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:16:05,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:16:05,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:16:05,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:03" (1/3) ... [2023-11-06 21:16:05,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0baec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:05, skipping insertion in model container [2023-11-06 21:16:05,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:04" (2/3) ... [2023-11-06 21:16:05,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0baec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:05, skipping insertion in model container [2023-11-06 21:16:05,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:05" (3/3) ... [2023-11-06 21:16:05,648 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-58.i [2023-11-06 21:16:05,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:16:05,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:16:05,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:16:05,749 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c6ded9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:16:05,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:16:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 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) [2023-11-06 21:16:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:05,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:05,774 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] [2023-11-06 21:16:05,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:05,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -773362153, now seen corresponding path program 1 times [2023-11-06 21:16:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:05,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449571910] [2023-11-06 21:16:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:05,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:06,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:06,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449571910] [2023-11-06 21:16:06,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 21:16:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918285469] [2023-11-06 21:16:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:06,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:06,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:16:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:06,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:16:06,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-06 21:16:06,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:06,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918285469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:06,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:06,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:16:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552728468] [2023-11-06 21:16:06,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:06,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:16:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:06,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:16:06,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:16:06,509 INFO L87 Difference]: Start difference. First operand has 92 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 75 states have internal predecessors, (103), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-06 21:16:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:06,585 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2023-11-06 21:16:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:16:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 116 [2023-11-06 21:16:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:06,602 INFO L225 Difference]: With dead ends: 173 [2023-11-06 21:16:06,602 INFO L226 Difference]: Without dead ends: 84 [2023-11-06 21:16:06,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:16:06,614 INFO L413 NwaCegarLoop]: 118 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, 118 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 [2023-11-06 21:16:06,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:16:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-06 21:16:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-06 21:16:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 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) [2023-11-06 21:16:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2023-11-06 21:16:06,712 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 116 [2023-11-06 21:16:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:06,713 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2023-11-06 21:16:06,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2023-11-06 21:16:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2023-11-06 21:16:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:06,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:06,719 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] [2023-11-06 21:16:06,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:06,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 21:16:06,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:06,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1258197323, now seen corresponding path program 1 times [2023-11-06 21:16:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500762312] [2023-11-06 21:16:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:07,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685810871] [2023-11-06 21:16:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:07,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:07,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:16:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:07,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:16:07,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:07,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:07,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500762312] [2023-11-06 21:16:07,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685810871] [2023-11-06 21:16:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685810871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:07,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:16:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567706821] [2023-11-06 21:16:07,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:16:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:16:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:16:07,462 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2023-11-06 21:16:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:07,511 INFO L93 Difference]: Finished difference Result 169 states and 238 transitions. [2023-11-06 21:16:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:16:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:07,514 INFO L225 Difference]: With dead ends: 169 [2023-11-06 21:16:07,515 INFO L226 Difference]: Without dead ends: 88 [2023-11-06 21:16:07,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:16:07,517 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 3 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:07,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 337 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:16:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-06 21:16:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2023-11-06 21:16:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 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) [2023-11-06 21:16:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2023-11-06 21:16:07,532 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 116 [2023-11-06 21:16:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:07,534 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2023-11-06 21:16:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2023-11-06 21:16:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2023-11-06 21:16:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:07,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:07,537 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] [2023-11-06 21:16:07,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:07,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:07,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1256350281, now seen corresponding path program 1 times [2023-11-06 21:16:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189273008] [2023-11-06 21:16:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:07,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:07,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760811823] [2023-11-06 21:16:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:07,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:07,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:16:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:08,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:16:08,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:09,365 INFO L322 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2023-11-06 21:16:09,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 54 [2023-11-06 21:16:09,562 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:16:09,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:09,619 INFO L351 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 [2023-11-06 21:16:09,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:09,665 INFO L351 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 [2023-11-06 21:16:09,695 INFO L351 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 17 treesize of output 9 [2023-11-06 21:16:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:09,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189273008] [2023-11-06 21:16:09,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760811823] [2023-11-06 21:16:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760811823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:09,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:09,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288013321] [2023-11-06 21:16:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:09,718 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:10,352 INFO L93 Difference]: Finished difference Result 230 states and 322 transitions. [2023-11-06 21:16:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:16:10,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:10,355 INFO L225 Difference]: With dead ends: 230 [2023-11-06 21:16:10,356 INFO L226 Difference]: Without dead ends: 147 [2023-11-06 21:16:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:16:10,358 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 269 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:10,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 285 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:16:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-06 21:16:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 96. [2023-11-06 21:16:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 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) [2023-11-06 21:16:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2023-11-06 21:16:10,378 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 116 [2023-11-06 21:16:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:10,379 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2023-11-06 21:16:10,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2023-11-06 21:16:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:10,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:10,388 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] [2023-11-06 21:16:10,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:10,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:10,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1727925920, now seen corresponding path program 1 times [2023-11-06 21:16:10,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:10,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251699269] [2023-11-06 21:16:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:10,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:10,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925419062] [2023-11-06 21:16:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:10,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:10,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:16:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:10,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 21:16:10,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:12,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:12,178 INFO L351 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 [2023-11-06 21:16:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:12,250 INFO L351 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 20 treesize of output 13 [2023-11-06 21:16:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:12,326 INFO L351 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 [2023-11-06 21:16:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 21:16:12,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:12,533 INFO L322 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-11-06 21:16:12,533 INFO L351 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 45 treesize of output 38 [2023-11-06 21:16:12,546 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 21:16:12,546 INFO L351 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 94 treesize of output 70 [2023-11-06 21:16:12,562 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:12,562 INFO L351 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 54 treesize of output 54 [2023-11-06 21:16:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:13,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251699269] [2023-11-06 21:16:13,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925419062] [2023-11-06 21:16:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925419062] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-06 21:16:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692719916] [2023-11-06 21:16:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:13,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=167, Unknown=3, NotChecked=0, Total=210 [2023-11-06 21:16:13,539 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2023-11-06 21:16:14,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:14,486 INFO L93 Difference]: Finished difference Result 251 states and 350 transitions. [2023-11-06 21:16:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:16:14,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:14,489 INFO L225 Difference]: With dead ends: 251 [2023-11-06 21:16:14,489 INFO L226 Difference]: Without dead ends: 158 [2023-11-06 21:16:14,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=330, Unknown=3, NotChecked=0, Total=420 [2023-11-06 21:16:14,491 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 372 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:14,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 375 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:16:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-06 21:16:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2023-11-06 21:16:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 93 states have internal predecessors, (123), 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) [2023-11-06 21:16:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 153 transitions. [2023-11-06 21:16:14,522 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 153 transitions. Word has length 116 [2023-11-06 21:16:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:14,524 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 153 transitions. [2023-11-06 21:16:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2023-11-06 21:16:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 153 transitions. [2023-11-06 21:16:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:14,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:14,531 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] [2023-11-06 21:16:14,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:14,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:14,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1469760482, now seen corresponding path program 1 times [2023-11-06 21:16:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405927644] [2023-11-06 21:16:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:14,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951561516] [2023-11-06 21:16:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:14,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:14,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:14,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:16:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:15,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:16:15,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:17,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:17,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:17,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:17,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:17,898 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:16:17,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 34 [2023-11-06 21:16:18,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:18,004 INFO L351 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 33 treesize of output 24 [2023-11-06 21:16:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:18,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405927644] [2023-11-06 21:16:18,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:18,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951561516] [2023-11-06 21:16:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951561516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051350013] [2023-11-06 21:16:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:18,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:18,160 INFO L87 Difference]: Start difference. First operand 110 states and 153 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:19,077 INFO L93 Difference]: Finished difference Result 243 states and 337 transitions. [2023-11-06 21:16:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:19,080 INFO L225 Difference]: With dead ends: 243 [2023-11-06 21:16:19,080 INFO L226 Difference]: Without dead ends: 136 [2023-11-06 21:16:19,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:16:19,082 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 160 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:19,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 222 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:16:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-06 21:16:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2023-11-06 21:16:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 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) [2023-11-06 21:16:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 152 transitions. [2023-11-06 21:16:19,101 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 152 transitions. Word has length 116 [2023-11-06 21:16:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:19,102 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 152 transitions. [2023-11-06 21:16:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 152 transitions. [2023-11-06 21:16:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:19,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:19,104 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] [2023-11-06 21:16:19,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:19,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:19,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:19,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash 978693474, now seen corresponding path program 1 times [2023-11-06 21:16:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427010871] [2023-11-06 21:16:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:19,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:19,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404483287] [2023-11-06 21:16:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:19,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:19,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:16:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:19,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 21:16:19,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:22,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,269 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:16:22,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-11-06 21:16:22,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,389 INFO L351 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 44 treesize of output 31 [2023-11-06 21:16:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:22,518 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:22,518 INFO L351 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 57 treesize of output 33 [2023-11-06 21:16:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:22,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:22,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:22,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427010871] [2023-11-06 21:16:22,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404483287] [2023-11-06 21:16:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404483287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330765007] [2023-11-06 21:16:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:22,553 INFO L87 Difference]: Start difference. First operand 110 states and 152 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:23,409 INFO L93 Difference]: Finished difference Result 269 states and 372 transitions. [2023-11-06 21:16:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:16:23,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:23,412 INFO L225 Difference]: With dead ends: 269 [2023-11-06 21:16:23,412 INFO L226 Difference]: Without dead ends: 162 [2023-11-06 21:16:23,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:16:23,413 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 238 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:23,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 267 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:16:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-06 21:16:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 111. [2023-11-06 21:16:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 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) [2023-11-06 21:16:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2023-11-06 21:16:23,432 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 116 [2023-11-06 21:16:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:23,432 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2023-11-06 21:16:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-11-06 21:16:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2023-11-06 21:16:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 21:16:23,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:23,435 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] [2023-11-06 21:16:23,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:23,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:23,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:23,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:23,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1236858912, now seen corresponding path program 1 times [2023-11-06 21:16:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711318235] [2023-11-06 21:16:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:23,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571321009] [2023-11-06 21:16:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:23,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:23,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:23,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:16:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:23,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-06 21:16:23,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:24,840 INFO L351 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 [2023-11-06 21:16:24,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:24,886 INFO L351 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 20 treesize of output 13 [2023-11-06 21:16:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:24,936 INFO L351 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 [2023-11-06 21:16:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 21:16:24,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:25,083 INFO L322 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-11-06 21:16:25,084 INFO L351 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 45 treesize of output 38 [2023-11-06 21:16:25,094 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 21:16:25,095 INFO L351 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 94 treesize of output 70 [2023-11-06 21:16:25,105 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:25,106 INFO L351 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 54 treesize of output 54 [2023-11-06 21:16:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711318235] [2023-11-06 21:16:25,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571321009] [2023-11-06 21:16:25,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571321009] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:25,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:25,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-06 21:16:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194057478] [2023-11-06 21:16:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:25,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:25,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=167, Unknown=3, NotChecked=0, Total=210 [2023-11-06 21:16:25,761 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2023-11-06 21:16:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:26,469 INFO L93 Difference]: Finished difference Result 248 states and 341 transitions. [2023-11-06 21:16:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:16:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 116 [2023-11-06 21:16:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:26,472 INFO L225 Difference]: With dead ends: 248 [2023-11-06 21:16:26,472 INFO L226 Difference]: Without dead ends: 140 [2023-11-06 21:16:26,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=299, Unknown=3, NotChecked=0, Total=380 [2023-11-06 21:16:26,473 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 236 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:26,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 485 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:16:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-06 21:16:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2023-11-06 21:16:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 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) [2023-11-06 21:16:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 153 transitions. [2023-11-06 21:16:26,492 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 153 transitions. Word has length 116 [2023-11-06 21:16:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 153 transitions. [2023-11-06 21:16:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2023-11-06 21:16:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 153 transitions. [2023-11-06 21:16:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:16:26,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:26,495 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] [2023-11-06 21:16:26,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:26,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:26,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1225741899, now seen corresponding path program 1 times [2023-11-06 21:16:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465308651] [2023-11-06 21:16:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:26,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:26,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818863172] [2023-11-06 21:16:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:26,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:26,746 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:16:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:26,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 21:16:26,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:27,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:27,943 INFO L351 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 17 treesize of output 17 [2023-11-06 21:16:27,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:27,997 INFO L351 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 22 treesize of output 15 [2023-11-06 21:16:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:28,096 INFO L351 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 [2023-11-06 21:16:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 21:16:28,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:28,313 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset |c_ULTIMATE.start_step_#t~ite16#1|)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_368))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset) 256)))) is different from false [2023-11-06 21:16:28,345 INFO L322 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2023-11-06 21:16:28,345 INFO L351 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 49 treesize of output 40 [2023-11-06 21:16:28,356 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 21:16:28,356 INFO L351 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 96 treesize of output 72 [2023-11-06 21:16:28,366 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:28,367 INFO L351 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 54 treesize of output 54 [2023-11-06 21:16:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:29,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465308651] [2023-11-06 21:16:29,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:29,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818863172] [2023-11-06 21:16:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818863172] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:29,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:16:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114251211] [2023-11-06 21:16:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:16:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:16:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=249, Unknown=10, NotChecked=32, Total=342 [2023-11-06 21:16:29,033 INFO L87 Difference]: Start difference. First operand 111 states and 153 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2023-11-06 21:16:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:30,307 INFO L93 Difference]: Finished difference Result 308 states and 426 transitions. [2023-11-06 21:16:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:16:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 117 [2023-11-06 21:16:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:30,310 INFO L225 Difference]: With dead ends: 308 [2023-11-06 21:16:30,310 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 21:16:30,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=569, Unknown=10, NotChecked=50, Total=756 [2023-11-06 21:16:30,312 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 400 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:30,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 416 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 486 Invalid, 0 Unknown, 230 Unchecked, 0.7s Time] [2023-11-06 21:16:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 21:16:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 124. [2023-11-06 21:16:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 107 states have internal predecessors, (142), 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) [2023-11-06 21:16:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2023-11-06 21:16:30,331 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 117 [2023-11-06 21:16:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:30,332 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2023-11-06 21:16:30,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2023-11-06 21:16:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2023-11-06 21:16:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:16:30,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:30,334 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] [2023-11-06 21:16:30,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:30,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:30,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash -967576461, now seen corresponding path program 1 times [2023-11-06 21:16:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:30,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870309032] [2023-11-06 21:16:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:30,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433757922] [2023-11-06 21:16:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:30,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:30,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:30,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:16:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:30,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:16:30,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:32,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:32,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:33,001 INFO L351 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 33 treesize of output 24 [2023-11-06 21:16:33,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:33,080 INFO L351 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 26 treesize of output 19 [2023-11-06 21:16:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:33,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:33,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870309032] [2023-11-06 21:16:33,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:33,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433757922] [2023-11-06 21:16:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433757922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705792459] [2023-11-06 21:16:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:33,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:33,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:33,221 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:34,360 INFO L93 Difference]: Finished difference Result 296 states and 410 transitions. [2023-11-06 21:16:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:16:34,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 117 [2023-11-06 21:16:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:34,367 INFO L225 Difference]: With dead ends: 296 [2023-11-06 21:16:34,367 INFO L226 Difference]: Without dead ends: 175 [2023-11-06 21:16:34,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:16:34,372 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 160 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:34,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 263 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 552 Invalid, 1 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 21:16:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-06 21:16:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 124. [2023-11-06 21:16:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 107 states have internal predecessors, (141), 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) [2023-11-06 21:16:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 171 transitions. [2023-11-06 21:16:34,406 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 171 transitions. Word has length 117 [2023-11-06 21:16:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:34,406 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 171 transitions. [2023-11-06 21:16:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 171 transitions. [2023-11-06 21:16:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:16:34,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:34,411 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] [2023-11-06 21:16:34,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:34,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:34,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:34,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1697317538, now seen corresponding path program 1 times [2023-11-06 21:16:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554235857] [2023-11-06 21:16:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:34,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600635530] [2023-11-06 21:16:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:34,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:34,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:34,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:16:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:34,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:16:34,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:35,663 INFO L322 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2023-11-06 21:16:35,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 54 [2023-11-06 21:16:35,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:16:35,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:35,904 INFO L351 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 [2023-11-06 21:16:35,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:35,935 INFO L351 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 [2023-11-06 21:16:35,954 INFO L351 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 17 treesize of output 9 [2023-11-06 21:16:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:35,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554235857] [2023-11-06 21:16:35,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600635530] [2023-11-06 21:16:35,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600635530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:35,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:35,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:35,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235346584] [2023-11-06 21:16:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:35,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:35,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:35,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:35,971 INFO L87 Difference]: Start difference. First operand 124 states and 171 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:36,493 INFO L93 Difference]: Finished difference Result 271 states and 372 transitions. [2023-11-06 21:16:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:16:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 117 [2023-11-06 21:16:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:36,495 INFO L225 Difference]: With dead ends: 271 [2023-11-06 21:16:36,495 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 21:16:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:16:36,497 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 160 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:36,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 261 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:16:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 21:16:36,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2023-11-06 21:16:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 105 states have internal predecessors, (136), 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) [2023-11-06 21:16:36,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2023-11-06 21:16:36,514 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 117 [2023-11-06 21:16:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:36,514 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2023-11-06 21:16:36,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2023-11-06 21:16:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:16:36,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:36,516 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] [2023-11-06 21:16:36,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:36,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:36,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1075080691, now seen corresponding path program 1 times [2023-11-06 21:16:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179961575] [2023-11-06 21:16:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:36,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:36,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400932260] [2023-11-06 21:16:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:36,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:36,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:36,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:36,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:16:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:36,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 21:16:36,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:38,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,848 INFO L351 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 33 treesize of output 24 [2023-11-06 21:16:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:38,903 INFO L351 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 26 treesize of output 19 [2023-11-06 21:16:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:38,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:16:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179961575] [2023-11-06 21:16:38,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400932260] [2023-11-06 21:16:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400932260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:16:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:16:39,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:16:39,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906675225] [2023-11-06 21:16:39,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:16:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:16:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:16:39,002 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:39,628 INFO L93 Difference]: Finished difference Result 267 states and 363 transitions. [2023-11-06 21:16:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:16:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 117 [2023-11-06 21:16:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:39,630 INFO L225 Difference]: With dead ends: 267 [2023-11-06 21:16:39,630 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 21:16:39,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:16:39,632 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 198 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:39,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 190 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:16:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 21:16:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 122. [2023-11-06 21:16:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 105 states have internal predecessors, (135), 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) [2023-11-06 21:16:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2023-11-06 21:16:39,653 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 117 [2023-11-06 21:16:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:39,657 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2023-11-06 21:16:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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) [2023-11-06 21:16:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2023-11-06 21:16:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 21:16:39,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:39,658 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] [2023-11-06 21:16:39,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:39,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 21:16:39,865 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:39,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1333246129, now seen corresponding path program 1 times [2023-11-06 21:16:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:39,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471703430] [2023-11-06 21:16:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:39,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539562876] [2023-11-06 21:16:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:39,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:39,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:39,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:16:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:40,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-06 21:16:40,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:41,244 INFO L351 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 19 treesize of output 19 [2023-11-06 21:16:41,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:41,322 INFO L351 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 24 treesize of output 17 [2023-11-06 21:16:41,401 INFO L351 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 34 treesize of output 18 [2023-11-06 21:16:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 21:16:41,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:41,556 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_554 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_554))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset) 256) (mod (+ 253 (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset)) 256)))) is different from false [2023-11-06 21:16:41,577 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_554 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset |c_ULTIMATE.start_step_#t~ite16#1|)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_554))) (= (mod (+ (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 253) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset) 256)))) is different from false [2023-11-06 21:16:41,615 INFO L322 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2023-11-06 21:16:41,615 INFO L351 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 55 treesize of output 54 [2023-11-06 21:16:41,652 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:41,652 INFO L351 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 120 treesize of output 107 [2023-11-06 21:16:41,672 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:16:41,672 INFO L351 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 78 treesize of output 78 [2023-11-06 21:16:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:42,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471703430] [2023-11-06 21:16:42,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539562876] [2023-11-06 21:16:42,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539562876] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:42,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:42,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-06 21:16:42,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990480000] [2023-11-06 21:16:42,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:42,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:16:42,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:16:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=228, Unknown=2, NotChecked=62, Total=342 [2023-11-06 21:16:42,410 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2023-11-06 21:16:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:43,297 INFO L93 Difference]: Finished difference Result 267 states and 361 transitions. [2023-11-06 21:16:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:16:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 117 [2023-11-06 21:16:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:43,300 INFO L225 Difference]: With dead ends: 267 [2023-11-06 21:16:43,300 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 21:16:43,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=458, Unknown=2, NotChecked=90, Total=650 [2023-11-06 21:16:43,302 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 218 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:43,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 463 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 374 Invalid, 0 Unknown, 331 Unchecked, 0.5s Time] [2023-11-06 21:16:43,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 21:16:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2023-11-06 21:16:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 102 states have internal predecessors, (131), 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) [2023-11-06 21:16:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2023-11-06 21:16:43,326 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 117 [2023-11-06 21:16:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:43,326 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2023-11-06 21:16:43,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2023-11-06 21:16:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2023-11-06 21:16:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 21:16:43,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:43,328 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] [2023-11-06 21:16:43,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:16:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:16:43,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:43,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1245925263, now seen corresponding path program 1 times [2023-11-06 21:16:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177947084] [2023-11-06 21:16:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:43,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145444150] [2023-11-06 21:16:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:43,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:43,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:43,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 21:16:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:43,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 21:16:43,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:44,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:16:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:16:44,469 INFO L351 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 17 treesize of output 17 [2023-11-06 21:16:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-06 21:16:44,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-06 21:16:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:16:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177947084] [2023-11-06 21:16:44,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:16:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145444150] [2023-11-06 21:16:44,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145444150] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:16:44,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:16:44,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-11-06 21:16:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583964484] [2023-11-06 21:16:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:16:44,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:16:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:16:44,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:16:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:16:44,721 INFO L87 Difference]: Start difference. First operand 119 states and 161 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2023-11-06 21:16:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:16:45,004 INFO L93 Difference]: Finished difference Result 285 states and 380 transitions. [2023-11-06 21:16:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:16:45,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 118 [2023-11-06 21:16:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:16:45,006 INFO L225 Difference]: With dead ends: 285 [2023-11-06 21:16:45,007 INFO L226 Difference]: Without dead ends: 169 [2023-11-06 21:16:45,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:16:45,008 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 96 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:16:45,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 463 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:16:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-06 21:16:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2023-11-06 21:16:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 122 states have internal predecessors, (152), 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) [2023-11-06 21:16:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2023-11-06 21:16:45,028 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 118 [2023-11-06 21:16:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:16:45,029 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2023-11-06 21:16:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2023-11-06 21:16:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2023-11-06 21:16:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 21:16:45,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:16:45,031 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] [2023-11-06 21:16:45,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-06 21:16:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 21:16:45,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:16:45,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:16:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1144824846, now seen corresponding path program 1 times [2023-11-06 21:16:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:16:45,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050040614] [2023-11-06 21:16:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:16:45,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:16:45,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937991627] [2023-11-06 21:16:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:16:45,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:16:45,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:16:45,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:16:45,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 21:16:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:16:57,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-06 21:16:57,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:16:59,173 INFO L351 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 [2023-11-06 21:17:01,102 INFO L351 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 26 treesize of output 19 [2023-11-06 21:17:02,066 INFO L351 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 33 treesize of output 17 [2023-11-06 21:17:03,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2023-11-06 21:17:05,603 INFO L351 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 0 case distinctions, treesize of input 60 treesize of output 46 [2023-11-06 21:17:07,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:07,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:07,437 INFO L351 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 62 treesize of output 52 [2023-11-06 21:17:08,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:08,978 INFO L322 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2023-11-06 21:17:08,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 89 [2023-11-06 21:17:09,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2023-11-06 21:17:09,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:09,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:09,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 75 [2023-11-06 21:17:11,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:11,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:11,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:11,843 INFO L351 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 95 treesize of output 82 [2023-11-06 21:17:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:27,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:17:27,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 59 [2023-11-06 21:17:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 91 proven. 313 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 21:17:32,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:17:35,059 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_658 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_658))) (< (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (div (+ (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 256)) (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)) 4294967296)))) is different from false [2023-11-06 21:17:37,685 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_658 (Array Int Int)) (v_ArrVal_656 Int)) (let ((.cse1 (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset v_ArrVal_656)))) (or (let ((.cse0 (store .cse1 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_658))) (< (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (div (+ (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256)) (select (select .cse0 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)) 4294967296))) (< (mod (div (+ (mod (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 256)) (select (select .cse1 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)) 4294967296) (+ (mod (select (select .cse1 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) 1))))) is different from false [2023-11-06 21:17:39,115 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_654 Int) (v_ArrVal_658 (Array Int Int)) (v_ArrVal_656 Int)) (let ((.cse0 (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset v_ArrVal_654)))) (let ((.cse2 (store .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset v_ArrVal_656)))) (or (< (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) 4294967041) (let ((.cse1 (store .cse2 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_658))) (< (mod (select (select .cse1 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (div (+ (mod (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 256)) (select (select .cse1 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)) 4294967296))) (< (mod (div (+ (mod (select (select .cse2 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset) 256) (mod (select (select .cse2 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256)) (select (select .cse2 c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.base) c_~signed_long_int_Array_0_arraysigned_long_int_Array_0Var0_Pointer~0.offset)) 4294967296) (+ (mod (select (select .cse2 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) 1)))))) is different from false [2023-11-06 21:17:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:17:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050040614] [2023-11-06 21:17:42,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:17:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937991627] [2023-11-06 21:17:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937991627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:17:42,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:17:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-11-06 21:17:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945610752] [2023-11-06 21:17:42,375 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:17:42,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 21:17:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:17:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 21:17:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1688, Unknown=3, NotChecked=264, Total=2256 [2023-11-06 21:17:42,379 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 38 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 11 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (15), 8 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-06 21:18:06,463 WARN L293 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 85 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 21:18:35,145 WARN L293 SmtUtils]: Spent 13.98s on a formula simplification. DAG size of input: 103 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 21:18:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:18:50,655 INFO L93 Difference]: Finished difference Result 466 states and 590 transitions. [2023-11-06 21:18:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 21:18:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 11 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (15), 8 states have call predecessors, (15), 11 states have call successors, (15) Word has length 119 [2023-11-06 21:18:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:18:50,659 INFO L225 Difference]: With dead ends: 466 [2023-11-06 21:18:50,659 INFO L226 Difference]: Without dead ends: 330 [2023-11-06 21:18:50,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 55.5s TimeCoverageRelationStatistics Valid=1104, Invalid=5711, Unknown=3, NotChecked=492, Total=7310 [2023-11-06 21:18:50,663 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 941 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:18:50,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1256 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 32.0s Time] [2023-11-06 21:18:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-06 21:18:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 192. [2023-11-06 21:18:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 169 states have internal predecessors, (209), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-06 21:18:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2023-11-06 21:18:50,700 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 119 [2023-11-06 21:18:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:18:50,701 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2023-11-06 21:18:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 11 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (15), 8 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-06 21:18:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2023-11-06 21:18:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 21:18:50,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:50,703 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] [2023-11-06 21:18:50,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:18:50,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 21:18:50,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:50,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1344704116, now seen corresponding path program 1 times [2023-11-06 21:18:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:18:50,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726521723] [2023-11-06 21:18:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:18:50,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:18:50,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922666611] [2023-11-06 21:18:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:50,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:18:50,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:18:50,942 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:18:50,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 21:18:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:18:51,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 21:18:51,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:18:51,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:51,387 INFO L351 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 [2023-11-06 21:18:51,782 INFO L351 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 [2023-11-06 21:18:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:52,262 INFO L351 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 [2023-11-06 21:18:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:52,560 INFO L351 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 [2023-11-06 21:18:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:52,844 INFO L351 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 [2023-11-06 21:18:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:53,152 INFO L351 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 [2023-11-06 21:18:53,409 INFO L351 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 [2023-11-06 21:18:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:53,645 INFO L351 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 [2023-11-06 21:18:53,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:53,693 INFO L351 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 [2023-11-06 21:18:53,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:53,742 INFO L351 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 [2023-11-06 21:18:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-06 21:18:53,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:18:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:18:54,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726521723] [2023-11-06 21:18:54,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:18:54,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922666611] [2023-11-06 21:18:54,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922666611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:18:54,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:18:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-06 21:18:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978978864] [2023-11-06 21:18:54,032 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:18:54,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:18:54,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:18:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:18:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=145, Unknown=9, NotChecked=0, Total=240 [2023-11-06 21:18:54,034 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-06 21:18:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:18:54,670 INFO L93 Difference]: Finished difference Result 535 states and 666 transitions. [2023-11-06 21:18:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:18:54,671 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2023-11-06 21:18:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:18:54,674 INFO L225 Difference]: With dead ends: 535 [2023-11-06 21:18:54,674 INFO L226 Difference]: Without dead ends: 321 [2023-11-06 21:18:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=161, Unknown=9, NotChecked=0, Total=272 [2023-11-06 21:18:54,675 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 233 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:18:54,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 323 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:18:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-06 21:18:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2023-11-06 21:18:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 274 states have (on average 1.218978102189781) internal successors, (334), 274 states have internal predecessors, (334), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 21:18:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 394 transitions. [2023-11-06 21:18:54,751 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 394 transitions. Word has length 119 [2023-11-06 21:18:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:18:54,755 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 394 transitions. [2023-11-06 21:18:54,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-06 21:18:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 394 transitions. [2023-11-06 21:18:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 21:18:54,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:54,757 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] [2023-11-06 21:18:54,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:18:54,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 21:18:54,964 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:54,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -612352598, now seen corresponding path program 1 times [2023-11-06 21:18:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:18:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440068906] [2023-11-06 21:18:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:18:54,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:18:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561793355] [2023-11-06 21:18:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:18:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:18:54,995 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:18:55,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 21:18:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:18:55,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-06 21:18:55,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:18:56,532 INFO L351 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 [2023-11-06 21:18:56,968 INFO L351 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 [2023-11-06 21:18:57,410 INFO L351 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 [2023-11-06 21:18:57,814 INFO L351 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 [2023-11-06 21:18:58,150 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:18:58,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 21:18:58,502 INFO L351 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 [2023-11-06 21:18:58,568 INFO L351 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 27 treesize of output 18 [2023-11-06 21:18:58,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:18:58,620 INFO L351 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 20 treesize of output 13 [2023-11-06 21:18:58,785 INFO L351 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 49 treesize of output 25 [2023-11-06 21:18:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-06 21:18:58,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:18:59,063 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 Int) (v_ArrVal_765 (Array Int Int))) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset (select (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset))))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset v_ArrVal_763))) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_765))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset) 256)))) is different from false [2023-11-06 21:18:59,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:18:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440068906] [2023-11-06 21:18:59,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:18:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561793355] [2023-11-06 21:18:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561793355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:18:59,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:18:59,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-06 21:18:59,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883954137] [2023-11-06 21:18:59,149 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:18:59,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:18:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:18:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:18:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=296, Unknown=16, NotChecked=36, Total=420 [2023-11-06 21:18:59,151 INFO L87 Difference]: Start difference. First operand 319 states and 394 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-06 21:19:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:19:00,500 INFO L93 Difference]: Finished difference Result 507 states and 653 transitions. [2023-11-06 21:19:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:19:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2023-11-06 21:19:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:19:00,504 INFO L225 Difference]: With dead ends: 507 [2023-11-06 21:19:00,504 INFO L226 Difference]: Without dead ends: 505 [2023-11-06 21:19:00,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=483, Unknown=16, NotChecked=48, Total=702 [2023-11-06 21:19:00,506 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 322 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:19:00,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 361 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:19:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-06 21:19:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 325. [2023-11-06 21:19:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 280 states have (on average 1.2142857142857142) internal successors, (340), 280 states have internal predecessors, (340), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 21:19:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 400 transitions. [2023-11-06 21:19:00,591 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 400 transitions. Word has length 120 [2023-11-06 21:19:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:19:00,591 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 400 transitions. [2023-11-06 21:19:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-06 21:19:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 400 transitions. [2023-11-06 21:19:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 21:19:00,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:19:00,593 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] [2023-11-06 21:19:00,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:19:00,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:19:00,800 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:19:00,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:19:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -610505556, now seen corresponding path program 1 times [2023-11-06 21:19:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:19:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855608216] [2023-11-06 21:19:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:19:00,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:19:00,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:19:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731837905] [2023-11-06 21:19:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:19:00,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:19:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:19:00,844 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:19:00,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 21:19:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:19:01,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-06 21:19:01,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:19:01,191 INFO L351 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 [2023-11-06 21:19:05,095 INFO L351 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 [2023-11-06 21:19:05,681 INFO L351 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 [2023-11-06 21:19:06,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 21:19:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,279 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-06 21:19:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-06 21:19:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-06 21:19:06,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:19:06,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 44 [2023-11-06 21:19:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-06 21:19:06,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:19:06,989 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_817))) (= (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (+ (* (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.offset) 256) 4294967295) (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.offset)) 4294967296)))) is different from false [2023-11-06 21:19:07,018 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 Int) (v_ArrVal_817 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset v_ArrVal_815)) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_817))) (= (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (+ (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.offset) (* (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.offset) 256) 4294967295)) 4294967296)))) is different from false [2023-11-06 21:19:07,043 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 Int) (v_ArrVal_817 (Array Int Int)) (v_ArrVal_814 Int)) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset v_ArrVal_814)))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var5_Pointer~0.offset v_ArrVal_815))) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_817))) (= (mod (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.offset) 4294967296) (mod (+ (select (select .cse0 c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.base) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var1_Pointer~0.offset) (* (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var4_Pointer~0.offset) 256) 4294967295)) 4294967296)))) is different from false [2023-11-06 21:19:07,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:19:07,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855608216] [2023-11-06 21:19:07,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:19:07,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731837905] [2023-11-06 21:19:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731837905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:19:07,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:19:07,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-06 21:19:07,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578225532] [2023-11-06 21:19:07,450 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 21:19:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:19:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:19:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:19:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=217, Unknown=3, NotChecked=96, Total=380 [2023-11-06 21:19:07,452 INFO L87 Difference]: Start difference. First operand 325 states and 400 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-06 21:19:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:19:08,886 INFO L93 Difference]: Finished difference Result 748 states and 918 transitions. [2023-11-06 21:19:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:19:08,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2023-11-06 21:19:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:19:08,889 INFO L225 Difference]: With dead ends: 748 [2023-11-06 21:19:08,890 INFO L226 Difference]: Without dead ends: 426 [2023-11-06 21:19:08,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=444, Unknown=3, NotChecked=144, Total=756 [2023-11-06 21:19:08,891 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 384 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:19:08,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 266 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:19:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-06 21:19:08,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 392. [2023-11-06 21:19:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 347 states have (on average 1.2219020172910662) internal successors, (424), 347 states have internal predecessors, (424), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 21:19:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 484 transitions. [2023-11-06 21:19:08,988 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 484 transitions. Word has length 120 [2023-11-06 21:19:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:19:08,988 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 484 transitions. [2023-11-06 21:19:08,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-06 21:19:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 484 transitions. [2023-11-06 21:19:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 21:19:08,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:19:08,990 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] [2023-11-06 21:19:09,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 21:19:09,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:19:09,198 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:19:09,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:19:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1905927733, now seen corresponding path program 1 times [2023-11-06 21:19:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:19:09,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220947455] [2023-11-06 21:19:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:19:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:19:09,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:19:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381710187] [2023-11-06 21:19:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:19:09,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:19:09,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:19:09,226 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:19:09,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_038afb11-86fa-4c42-b762-ee317555178f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process