./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.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_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/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_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/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_da1d9abe-6265-4d5c-836a-6e0013dda14a/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 f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:58,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:58,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:04:58,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:58,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:58,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:58,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:58,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:58,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:58,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:58,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:58,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:58,826 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:58,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:58,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:58,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:58,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:58,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:58,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:58,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:58,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:58,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:58,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:58,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:58,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:58,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:58,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:58,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:58,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:58,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:58,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:58,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:58,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:58,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:58,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:58,848 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:58,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:58,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:58,848 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:58,849 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_da1d9abe-6265-4d5c-836a-6e0013dda14a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 [2023-11-06 22:04:59,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:59,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:59,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:59,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:59,289 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:59,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-11-06 22:05:02,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:05:03,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:05:03,305 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-11-06 22:05:03,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/data/e9d355483/f984831690834f6cb26882f45af38f0f/FLAGd6253f920 [2023-11-06 22:05:03,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/data/e9d355483/f984831690834f6cb26882f45af38f0f [2023-11-06 22:05:03,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:05:03,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:05:03,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:03,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:05:03,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:05:03,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b131a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03, skipping insertion in model container [2023-11-06 22:05:03,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:03,619 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_da1d9abe-6265-4d5c-836a-6e0013dda14a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2023-11-06 22:05:03,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:03,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:05:03,732 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_da1d9abe-6265-4d5c-836a-6e0013dda14a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2023-11-06 22:05:03,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:03,838 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:05:03,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03 WrapperNode [2023-11-06 22:05:03,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:03,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:03,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:05:03,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:05:03,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,956 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 722 [2023-11-06 22:05:03,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:03,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:05:03,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:05:03,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:05:03,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:03,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:05:04,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:05:04,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:05:04,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:05:04,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (1/1) ... [2023-11-06 22:05:04,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:04,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:04,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:05:04,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:05:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:05:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:05:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-06 22:05:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-06 22:05:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:05:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-06 22:05:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:05:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:05:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:05:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:05:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:05:04,401 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:05:04,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:05:05,397 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:05:05,411 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:05:05,412 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:05:05,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:05 BoogieIcfgContainer [2023-11-06 22:05:05,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:05:05,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:05:05,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:05:05,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:05:05,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:05:03" (1/3) ... [2023-11-06 22:05:05,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d615ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:05, skipping insertion in model container [2023-11-06 22:05:05,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:03" (2/3) ... [2023-11-06 22:05:05,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d615ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:05, skipping insertion in model container [2023-11-06 22:05:05,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:05" (3/3) ... [2023-11-06 22:05:05,433 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2023-11-06 22:05:05,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:05:05,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:05:05,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:05,538 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;@67985b32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:05,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:05:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:05:05,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:05,567 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:05,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:05,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1448501280, now seen corresponding path program 1 times [2023-11-06 22:05:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208188786] [2023-11-06 22:05:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208188786] [2023-11-06 22:05:06,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:05:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88051311] [2023-11-06 22:05:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:06,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:06,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:06,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:05:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:06,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:05:06,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-06 22:05:06,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88051311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:06,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785521488] [2023-11-06 22:05:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:05:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:05:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:05:06,685 INFO L87 Difference]: Start difference. First operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:05:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:06,739 INFO L93 Difference]: Finished difference Result 301 states and 469 transitions. [2023-11-06 22:05:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:05:06,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2023-11-06 22:05:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:06,759 INFO L225 Difference]: With dead ends: 301 [2023-11-06 22:05:06,761 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 22:05:06,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 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 22:05:06,771 INFO L413 NwaCegarLoop]: 222 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, 222 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 22:05:06,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 22:05:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-06 22:05:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2023-11-06 22:05:06,846 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2023-11-06 22:05:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:06,847 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2023-11-06 22:05:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:05:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2023-11-06 22:05:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:05:06,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:06,853 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:06,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:07,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:07,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:07,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1664099722, now seen corresponding path program 1 times [2023-11-06 22:05:07,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:07,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839283918] [2023-11-06 22:05:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:07,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839283918] [2023-11-06 22:05:07,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:05:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347335272] [2023-11-06 22:05:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:07,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:07,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:05:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:07,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-06 22:05:07,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347335272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:07,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:07,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285107286] [2023-11-06 22:05:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:07,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:07,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:07,877 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:05:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:07,990 INFO L93 Difference]: Finished difference Result 303 states and 450 transitions. [2023-11-06 22:05:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2023-11-06 22:05:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:08,000 INFO L225 Difference]: With dead ends: 303 [2023-11-06 22:05:08,000 INFO L226 Difference]: Without dead ends: 156 [2023-11-06 22:05:08,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 22:05:08,006 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 10 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 654 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-06 22:05:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2023-11-06 22:05:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2023-11-06 22:05:08,047 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2023-11-06 22:05:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:08,051 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2023-11-06 22:05:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:05:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2023-11-06 22:05:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:05:08,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:08,062 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:08,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:08,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:08,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -719825016, now seen corresponding path program 1 times [2023-11-06 22:05:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:08,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705773183] [2023-11-06 22:05:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:08,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:08,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690777276] [2023-11-06 22:05:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:08,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:08,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:05:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:08,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:08,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:08,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:08,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705773183] [2023-11-06 22:05:08,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690777276] [2023-11-06 22:05:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690777276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379687439] [2023-11-06 22:05:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:08,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:08,782 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:08,827 INFO L93 Difference]: Finished difference Result 309 states and 456 transitions. [2023-11-06 22:05:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2023-11-06 22:05:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:08,832 INFO L225 Difference]: With dead ends: 309 [2023-11-06 22:05:08,832 INFO L226 Difference]: Without dead ends: 160 [2023-11-06 22:05:08,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 22:05:08,836 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 12 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 651 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-06 22:05:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2023-11-06 22:05:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2023-11-06 22:05:08,873 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2023-11-06 22:05:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:08,874 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2023-11-06 22:05:08,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2023-11-06 22:05:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:05:08,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:08,877 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:08,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:09,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:09,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:09,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1055182346, now seen corresponding path program 1 times [2023-11-06 22:05:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263289271] [2023-11-06 22:05:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:09,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297258388] [2023-11-06 22:05:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:09,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:09,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:09,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:05:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:09,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:09,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:09,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:09,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:09,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263289271] [2023-11-06 22:05:09,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:09,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297258388] [2023-11-06 22:05:09,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297258388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:09,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:09,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269185438] [2023-11-06 22:05:09,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:09,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:09,541 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:09,580 INFO L93 Difference]: Finished difference Result 309 states and 454 transitions. [2023-11-06 22:05:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2023-11-06 22:05:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:09,584 INFO L225 Difference]: With dead ends: 309 [2023-11-06 22:05:09,585 INFO L226 Difference]: Without dead ends: 158 [2023-11-06 22:05:09,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 22:05:09,587 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 3 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:09,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 650 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-06 22:05:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-11-06 22:05:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2023-11-06 22:05:09,603 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2023-11-06 22:05:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:09,604 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2023-11-06 22:05:09,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2023-11-06 22:05:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:05:09,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:09,607 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:09,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:09,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:09,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1057029388, now seen corresponding path program 1 times [2023-11-06 22:05:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638928993] [2023-11-06 22:05:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:09,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:09,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075294680] [2023-11-06 22:05:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:09,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:09,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:09,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:05:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:10,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:10,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:10,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:10,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638928993] [2023-11-06 22:05:10,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075294680] [2023-11-06 22:05:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075294680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:10,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143167451] [2023-11-06 22:05:10,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:10,302 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:10,346 INFO L93 Difference]: Finished difference Result 348 states and 510 transitions. [2023-11-06 22:05:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2023-11-06 22:05:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:10,349 INFO L225 Difference]: With dead ends: 348 [2023-11-06 22:05:10,349 INFO L226 Difference]: Without dead ends: 195 [2023-11-06 22:05:10,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 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 22:05:10,351 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 66 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:10,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 725 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-06 22:05:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 158. [2023-11-06 22:05:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2023-11-06 22:05:10,364 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2023-11-06 22:05:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:10,366 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2023-11-06 22:05:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2023-11-06 22:05:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:10,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:10,370 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:10,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:10,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:10,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1686736903, now seen corresponding path program 1 times [2023-11-06 22:05:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601359953] [2023-11-06 22:05:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:10,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055216788] [2023-11-06 22:05:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:10,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:10,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:10,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:05:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:11,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:05:11,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:11,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:11,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601359953] [2023-11-06 22:05:11,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055216788] [2023-11-06 22:05:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055216788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:11,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:11,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864885341] [2023-11-06 22:05:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:11,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:11,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:11,059 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:11,091 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2023-11-06 22:05:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:05:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2023-11-06 22:05:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:11,094 INFO L225 Difference]: With dead ends: 317 [2023-11-06 22:05:11,094 INFO L226 Difference]: Without dead ends: 162 [2023-11-06 22:05:11,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:11,096 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:11,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 437 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-06 22:05:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2023-11-06 22:05:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2023-11-06 22:05:11,105 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2023-11-06 22:05:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:11,106 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2023-11-06 22:05:11,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2023-11-06 22:05:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:11,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:11,109 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:11,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:11,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:05:11,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:11,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash -118701431, now seen corresponding path program 1 times [2023-11-06 22:05:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:11,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970302914] [2023-11-06 22:05:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:11,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976237813] [2023-11-06 22:05:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:11,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:11,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:11,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:05:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:11,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-06 22:05:11,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:15,424 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 22:05:16,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:16,310 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 22:05:16,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:16,763 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 22:05:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:17,199 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 22:05:17,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:17,527 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 22:05:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:17,945 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 22:05:18,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,281 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 22:05:18,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:18,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,639 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 31 treesize of output 24 [2023-11-06 22:05:18,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:05:18,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-06 22:05:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-06 22:05:18,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:05:18,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2023-11-06 22:05:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,809 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 28 treesize of output 21 [2023-11-06 22:05:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:05:18,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2023-11-06 22:05:18,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,841 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:18,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,847 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 21 treesize of output 21 [2023-11-06 22:05:18,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:05:18,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,889 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 24 [2023-11-06 22:05:18,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:05:18,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:05:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-06 22:05:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:18,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:05:19,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,048 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 34 treesize of output 28 [2023-11-06 22:05:19,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:19,169 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 38 treesize of output 35 [2023-11-06 22:05:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 399 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-06 22:05:19,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:19,621 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_909 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_909) c_~var_1_12_Pointer~0.base) c_~var_1_12_Pointer~0.offset) 1))) is different from false [2023-11-06 22:05:19,663 WARN L839 $PredicateComparison]: unable to prove that (forall ((~var_1_12_Pointer~0.offset Int) (v_ArrVal_909 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base (store (select |c_#memory_int| c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset (select (select |c_#memory_int| c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset))) c_~var_1_15_Pointer~0.base v_ArrVal_909) c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 1))) is different from false [2023-11-06 22:05:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970302914] [2023-11-06 22:05:19,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976237813] [2023-11-06 22:05:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976237813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:19,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:05:19,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-06 22:05:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381503504] [2023-11-06 22:05:19,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:19,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:05:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:05:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=341, Unknown=7, NotChecked=78, Total=506 [2023-11-06 22:05:19,831 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 22:05:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:22,610 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2023-11-06 22:05:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:05:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 155 [2023-11-06 22:05:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:22,615 INFO L225 Difference]: With dead ends: 466 [2023-11-06 22:05:22,616 INFO L226 Difference]: Without dead ends: 308 [2023-11-06 22:05:22,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=217, Invalid=776, Unknown=7, NotChecked=122, Total=1122 [2023-11-06 22:05:22,618 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1970 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:22,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 1105 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:05:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-06 22:05:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 193. [2023-11-06 22:05:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 173 states have (on average 1.416184971098266) internal successors, (245), 173 states have internal predecessors, (245), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 279 transitions. [2023-11-06 22:05:22,641 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 279 transitions. Word has length 155 [2023-11-06 22:05:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:22,642 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 279 transitions. [2023-11-06 22:05:22,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 22:05:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 279 transitions. [2023-11-06 22:05:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:22,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:22,646 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:22,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:05:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:05:22,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:22,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash -936349881, now seen corresponding path program 1 times [2023-11-06 22:05:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231290785] [2023-11-06 22:05:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:22,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:22,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248058895] [2023-11-06 22:05:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:22,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:22,921 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:22,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:05:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:23,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:05:23,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:23,420 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:23,421 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 31 treesize of output 27 [2023-11-06 22:05:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:23,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231290785] [2023-11-06 22:05:23,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248058895] [2023-11-06 22:05:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248058895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:23,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:05:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177679530] [2023-11-06 22:05:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:23,445 INFO L87 Difference]: Start difference. First operand 193 states and 279 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:23,710 INFO L93 Difference]: Finished difference Result 444 states and 641 transitions. [2023-11-06 22:05:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2023-11-06 22:05:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:23,713 INFO L225 Difference]: With dead ends: 444 [2023-11-06 22:05:23,713 INFO L226 Difference]: Without dead ends: 252 [2023-11-06 22:05:23,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:05:23,715 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 142 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:23,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 862 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:05:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-06 22:05:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 196. [2023-11-06 22:05:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 176 states have (on average 1.4147727272727273) internal successors, (249), 176 states have internal predecessors, (249), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 283 transitions. [2023-11-06 22:05:23,733 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 283 transitions. Word has length 155 [2023-11-06 22:05:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:23,733 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 283 transitions. [2023-11-06 22:05:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 283 transitions. [2023-11-06 22:05:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:23,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:23,737 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:23,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:23,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:23,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:23,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1009637063, now seen corresponding path program 1 times [2023-11-06 22:05:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176149311] [2023-11-06 22:05:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:23,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076026387] [2023-11-06 22:05:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:24,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:24,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:05:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:24,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:05:24,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:24,477 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 15 treesize of output 7 [2023-11-06 22:05:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:24,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176149311] [2023-11-06 22:05:24,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076026387] [2023-11-06 22:05:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076026387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:24,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:05:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250799458] [2023-11-06 22:05:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:24,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:05:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:05:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:05:24,501 INFO L87 Difference]: Start difference. First operand 196 states and 283 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:25,177 INFO L93 Difference]: Finished difference Result 534 states and 771 transitions. [2023-11-06 22:05:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2023-11-06 22:05:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:25,181 INFO L225 Difference]: With dead ends: 534 [2023-11-06 22:05:25,181 INFO L226 Difference]: Without dead ends: 341 [2023-11-06 22:05:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:25,183 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 264 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:25,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1228 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:05:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-06 22:05:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 205. [2023-11-06 22:05:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 185 states have (on average 1.4162162162162162) internal successors, (262), 185 states have internal predecessors, (262), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 296 transitions. [2023-11-06 22:05:25,203 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 296 transitions. Word has length 155 [2023-11-06 22:05:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:25,204 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 296 transitions. [2023-11-06 22:05:25,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:25,205 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 296 transitions. [2023-11-06 22:05:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:25,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:25,208 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:25,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:25,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:25,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash -984507643, now seen corresponding path program 1 times [2023-11-06 22:05:25,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:25,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634854146] [2023-11-06 22:05:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:25,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:25,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113500844] [2023-11-06 22:05:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:25,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:25,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:05:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:25,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:05:25,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:27,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,181 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 27 treesize of output 15 [2023-11-06 22:05:27,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,234 INFO L322 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2023-11-06 22:05:27,234 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 2 case distinctions, treesize of input 80 treesize of output 52 [2023-11-06 22:05:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,346 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:05:27,347 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 1 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 22:05:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:27,443 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:05:27,448 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 31 treesize of output 30 [2023-11-06 22:05:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,206 INFO L322 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2023-11-06 22:05:28,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 440 treesize of output 236 [2023-11-06 22:05:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:05:28,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634854146] [2023-11-06 22:05:28,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113500844] [2023-11-06 22:05:28,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113500844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:28,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:28,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:05:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463136431] [2023-11-06 22:05:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:05:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:05:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:28,465 INFO L87 Difference]: Start difference. First operand 205 states and 296 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:30,419 INFO L93 Difference]: Finished difference Result 513 states and 736 transitions. [2023-11-06 22:05:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:05:30,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2023-11-06 22:05:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:30,422 INFO L225 Difference]: With dead ends: 513 [2023-11-06 22:05:30,422 INFO L226 Difference]: Without dead ends: 311 [2023-11-06 22:05:30,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:05:30,424 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 859 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:30,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1173 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:05:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-06 22:05:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 207. [2023-11-06 22:05:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 187 states have (on average 1.4171122994652405) internal successors, (265), 187 states have internal predecessors, (265), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2023-11-06 22:05:30,442 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 155 [2023-11-06 22:05:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:30,443 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2023-11-06 22:05:30,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:05:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2023-11-06 22:05:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:30,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:30,446 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:05:30,659 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:30,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -795801271, now seen corresponding path program 1 times [2023-11-06 22:05:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391665394] [2023-11-06 22:05:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:30,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242398641] [2023-11-06 22:05:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:30,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:30,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:30,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:05:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:31,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-06 22:05:31,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:31,541 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 22:05:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,327 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 12 [2023-11-06 22:05:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:34,280 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 12 [2023-11-06 22:05:35,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:35,169 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 12 [2023-11-06 22:05:35,968 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 12 [2023-11-06 22:05:36,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:36,625 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 12 [2023-11-06 22:05:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:37,167 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 12 [2023-11-06 22:05:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:37,658 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 12 [2023-11-06 22:05:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,064 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 12 [2023-11-06 22:05:38,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,424 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 12 [2023-11-06 22:05:38,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,704 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 12 [2023-11-06 22:05:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,122 INFO L322 Elim1Store]: treesize reduction 149, result has 30.0 percent of original size [2023-11-06 22:05:39,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 128 treesize of output 241 [2023-11-06 22:05:39,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:05:39,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:05:39,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:05:39,281 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:39,282 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-06 22:05:39,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:39,375 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:39,400 INFO L322 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2023-11-06 22:05:39,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 136 treesize of output 118 [2023-11-06 22:05:39,479 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 22:05:39,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 22:05:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,638 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:39,645 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:39,662 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:05:39,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 107 treesize of output 87 [2023-11-06 22:05:39,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 22:05:39,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,828 INFO L322 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2023-11-06 22:05:39,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 110 treesize of output 96 [2023-11-06 22:05:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:39,990 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:05:40,001 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:05:40,002 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 37 [2023-11-06 22:05:40,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,479 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:05:40,480 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 2 case distinctions, treesize of input 35 treesize of output 36 [2023-11-06 22:05:40,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,629 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 22:05:40,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2023-11-06 22:05:41,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,815 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-06 22:05:41,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 33 [2023-11-06 22:05:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 524 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:05:41,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:42,854 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1444 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse1 (select (select .cse3 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset)) (.cse2 (select (select .cse3 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse0 (mod .cse1 .cse2))) (or (= .cse0 0) (< 0 (+ .cse1 1)) (< .cse2 (+ .cse0 1)) (not (= (select (select .cse3 c_~var_1_12_Pointer~0.base) c_~var_1_12_Pointer~0.offset) 0))))))) (forall ((v_ArrVal_1444 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (or (< 0 (+ (mod (select (select .cse4 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset) (select (select .cse4 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 1)) (not (= (select (select .cse4 c_~var_1_12_Pointer~0.base) c_~var_1_12_Pointer~0.offset) 0))))) (forall ((v_ArrVal_1444 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse7 (select (select .cse8 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset)) (.cse6 (select (select .cse8 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse5 (mod .cse7 .cse6))) (or (= .cse5 0) (< 0 (+ .cse5 .cse6 1)) (< 0 (+ .cse7 1)) (not (= (select (select .cse8 c_~var_1_12_Pointer~0.base) c_~var_1_12_Pointer~0.offset) 0)))))))) is different from false [2023-11-06 22:05:43,027 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| c_~var_1_12_Pointer~0.base)) (.cse5 (select (select |c_#memory_int| c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset))) (and (forall ((v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base (store .cse4 ~var_1_12_Pointer~0.offset .cse5)) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse1 (select (select .cse0 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset)) (.cse3 (select (select .cse0 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse2 (mod .cse1 .cse3))) (or (not (= 0 (select (select .cse0 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset))) (< 0 (+ .cse1 1)) (< 0 (+ .cse2 .cse3 1)) (= .cse2 0)))))) (forall ((v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base (store .cse4 ~var_1_12_Pointer~0.offset .cse5)) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (or (not (= 0 (select (select .cse6 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset))) (< 0 (+ (mod (select (select .cse6 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset) (select (select .cse6 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 1))))) (forall ((v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse7 (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base (store .cse4 ~var_1_12_Pointer~0.offset .cse5)) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse10 (select (select .cse7 c_~var_1_24_Pointer~0.base) c_~var_1_24_Pointer~0.offset)) (.cse8 (select (select .cse7 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse9 (mod .cse10 .cse8))) (or (not (= 0 (select (select .cse7 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset))) (< .cse8 (+ .cse9 1)) (< 0 (+ .cse10 1)) (= .cse9 0)))))))) is different from false [2023-11-06 22:05:43,670 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1439 (Array Int Int)) (v_ArrVal_1441 Int) (~var_1_14_Pointer~0.offset Int) (v_ArrVal_1440 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| c_~var_1_22_Pointer~0.base v_ArrVal_1439) c_~var_1_23_Pointer~0.base v_ArrVal_1440))) (or (forall ((~var_1_24_Pointer~0.offset Int) (v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse2 (store (let ((.cse4 (store .cse5 c_~var_1_24_Pointer~0.base (store (select .cse5 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset v_ArrVal_1441)))) (store .cse4 c_~var_1_12_Pointer~0.base (store (select .cse4 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset (select (select .cse4 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse3 (select (select .cse2 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset)) (.cse1 (select (select .cse2 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse0 (mod .cse3 .cse1))) (or (= .cse0 0) (< .cse1 (+ .cse0 1)) (not (= (select (select .cse2 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 0)) (< 0 (+ .cse3 1))))))) (< v_ArrVal_1441 (select (select .cse5 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset))))) (forall ((v_ArrVal_1439 (Array Int Int)) (v_ArrVal_1441 Int) (~var_1_14_Pointer~0.offset Int) (v_ArrVal_1440 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_22_Pointer~0.base v_ArrVal_1439) c_~var_1_23_Pointer~0.base v_ArrVal_1440))) (or (< v_ArrVal_1441 (select (select .cse6 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset)) (forall ((~var_1_24_Pointer~0.offset Int) (v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse7 (store (let ((.cse8 (store .cse6 c_~var_1_24_Pointer~0.base (store (select .cse6 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset v_ArrVal_1441)))) (store .cse8 c_~var_1_12_Pointer~0.base (store (select .cse8 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset (select (select .cse8 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (or (< 0 (+ (mod (select (select .cse7 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset) (select (select .cse7 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)) 1)) (not (= (select (select .cse7 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 0)))))))) (forall ((v_ArrVal_1439 (Array Int Int)) (v_ArrVal_1441 Int) (~var_1_14_Pointer~0.offset Int) (v_ArrVal_1440 (Array Int Int))) (let ((.cse14 (store (store |c_#memory_int| c_~var_1_22_Pointer~0.base v_ArrVal_1439) c_~var_1_23_Pointer~0.base v_ArrVal_1440))) (or (forall ((~var_1_24_Pointer~0.offset Int) (v_ArrVal_1444 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse11 (store (let ((.cse13 (store .cse14 c_~var_1_24_Pointer~0.base (store (select .cse14 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset v_ArrVal_1441)))) (store .cse13 c_~var_1_12_Pointer~0.base (store (select .cse13 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset (select (select .cse13 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset)))) c_~var_1_15_Pointer~0.base v_ArrVal_1444))) (let ((.cse12 (select (select .cse11 c_~var_1_24_Pointer~0.base) ~var_1_24_Pointer~0.offset)) (.cse10 (select (select .cse11 c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset))) (let ((.cse9 (mod .cse12 .cse10))) (or (= .cse9 0) (< 0 (+ .cse9 .cse10 1)) (not (= (select (select .cse11 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 0)) (< 0 (+ .cse12 1))))))) (< v_ArrVal_1441 (select (select .cse14 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset)))))) is different from false [2023-11-06 22:05:44,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391665394] [2023-11-06 22:05:44,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242398641] [2023-11-06 22:05:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242398641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:44,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:05:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-11-06 22:05:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644819473] [2023-11-06 22:05:44,073 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:05:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:44,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:05:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1033, Unknown=3, NotChecked=204, Total=1406 [2023-11-06 22:05:44,075 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 25 states have internal predecessors, (106), 12 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-06 22:05:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:57,691 INFO L93 Difference]: Finished difference Result 615 states and 877 transitions. [2023-11-06 22:05:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:05:57,692 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 25 states have internal predecessors, (106), 12 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) Word has length 155 [2023-11-06 22:05:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:57,695 INFO L225 Difference]: With dead ends: 615 [2023-11-06 22:05:57,696 INFO L226 Difference]: Without dead ends: 411 [2023-11-06 22:05:57,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=487, Invalid=2072, Unknown=3, NotChecked=300, Total=2862 [2023-11-06 22:05:57,699 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2568 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 176 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:57,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2568 Valid, 1675 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1511 Invalid, 8 Unknown, 0 Unchecked, 8.8s Time] [2023-11-06 22:05:57,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-11-06 22:05:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 211. [2023-11-06 22:05:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 190 states have (on average 1.4105263157894736) internal successors, (268), 190 states have internal predecessors, (268), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:05:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2023-11-06 22:05:57,725 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 155 [2023-11-06 22:05:57,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:57,725 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2023-11-06 22:05:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.925925925925926) internal successors, (106), 25 states have internal predecessors, (106), 12 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-06 22:05:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2023-11-06 22:05:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:05:57,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:57,728 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:57,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:57,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:05:57,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:57,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1505021319, now seen corresponding path program 1 times [2023-11-06 22:05:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:57,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461570433] [2023-11-06 22:05:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:57,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681805641] [2023-11-06 22:05:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:57,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:58,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:05:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:58,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:05:58,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:59,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:59,998 INFO L322 Elim1Store]: treesize reduction 49, result has 26.9 percent of original size [2023-11-06 22:05:59,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 63 [2023-11-06 22:06:00,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:06:00,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 24 [2023-11-06 22:06:00,045 INFO L322 Elim1Store]: treesize reduction 17, result has 43.3 percent of original size [2023-11-06 22:06:00,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 25 [2023-11-06 22:06:00,113 INFO L322 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2023-11-06 22:06:00,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2023-11-06 22:06:00,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,190 INFO L322 Elim1Store]: treesize reduction 67, result has 21.2 percent of original size [2023-11-06 22:06:00,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 63 [2023-11-06 22:06:00,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,285 INFO L322 Elim1Store]: treesize reduction 35, result has 45.3 percent of original size [2023-11-06 22:06:00,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 61 [2023-11-06 22:06:00,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-06 22:06:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,474 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:06:00,474 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 1 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 22:06:00,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:00,571 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:06:00,571 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 31 treesize of output 30 [2023-11-06 22:06:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:01,748 INFO L322 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2023-11-06 22:06:01,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 237 treesize of output 141 [2023-11-06 22:06:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:06:01,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:06:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461570433] [2023-11-06 22:06:01,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:06:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681805641] [2023-11-06 22:06:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681805641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:01,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:01,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:06:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292524482] [2023-11-06 22:06:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:06:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:06:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:06:01,974 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:08,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:06:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:09,527 INFO L93 Difference]: Finished difference Result 558 states and 794 transitions. [2023-11-06 22:06:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:06:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2023-11-06 22:06:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:09,532 INFO L225 Difference]: With dead ends: 558 [2023-11-06 22:06:09,532 INFO L226 Difference]: Without dead ends: 350 [2023-11-06 22:06:09,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:06:09,534 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 678 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:09,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1508 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:06:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-06 22:06:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 208. [2023-11-06 22:06:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 187 states have (on average 1.411764705882353) internal successors, (264), 187 states have internal predecessors, (264), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:06:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 298 transitions. [2023-11-06 22:06:09,566 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 298 transitions. Word has length 155 [2023-11-06 22:06:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:09,567 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 298 transitions. [2023-11-06 22:06:09,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 298 transitions. [2023-11-06 22:06:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 22:06:09,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:09,571 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:09,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:06:09,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:09,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -240633536, now seen corresponding path program 1 times [2023-11-06 22:06:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290348030] [2023-11-06 22:06:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:09,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:06:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883836481] [2023-11-06 22:06:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:09,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:09,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:09,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:09,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:06:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:10,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:06:10,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:06:10,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:06:10,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:10,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290348030] [2023-11-06 22:06:10,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:06:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883836481] [2023-11-06 22:06:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883836481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197724238] [2023-11-06 22:06:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:10,294 INFO L87 Difference]: Start difference. First operand 208 states and 298 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:10,333 INFO L93 Difference]: Finished difference Result 447 states and 642 transitions. [2023-11-06 22:06:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2023-11-06 22:06:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:10,336 INFO L225 Difference]: With dead ends: 447 [2023-11-06 22:06:10,336 INFO L226 Difference]: Without dead ends: 242 [2023-11-06 22:06:10,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:10,338 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 46 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:10,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 475 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-06 22:06:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 209. [2023-11-06 22:06:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 188 states have (on average 1.4095744680851063) internal successors, (265), 188 states have internal predecessors, (265), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:06:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 299 transitions. [2023-11-06 22:06:10,366 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 299 transitions. Word has length 156 [2023-11-06 22:06:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:10,366 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 299 transitions. [2023-11-06 22:06:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 299 transitions. [2023-11-06 22:06:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 22:06:10,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:10,370 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:10,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:10,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:06:10,577 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:10,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1520497214, now seen corresponding path program 1 times [2023-11-06 22:06:10,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:10,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166732214] [2023-11-06 22:06:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:10,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:06:10,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887483469] [2023-11-06 22:06:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:10,665 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:10,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:06:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:11,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:06:11,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:12,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:12,155 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 22:06:12,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:12,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:12,192 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 20 treesize of output 18 [2023-11-06 22:06:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:06:12,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:06:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166732214] [2023-11-06 22:06:12,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:06:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887483469] [2023-11-06 22:06:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887483469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:12,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:12,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:06:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423957819] [2023-11-06 22:06:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:06:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:06:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:06:12,369 INFO L87 Difference]: Start difference. First operand 209 states and 299 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:13,380 INFO L93 Difference]: Finished difference Result 499 states and 711 transitions. [2023-11-06 22:06:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:06:13,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2023-11-06 22:06:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:13,384 INFO L225 Difference]: With dead ends: 499 [2023-11-06 22:06:13,385 INFO L226 Difference]: Without dead ends: 293 [2023-11-06 22:06:13,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:06:13,386 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 597 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:13,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1375 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:06:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-06 22:06:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 217. [2023-11-06 22:06:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 196 states have (on average 1.403061224489796) internal successors, (275), 196 states have internal predecessors, (275), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:06:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 309 transitions. [2023-11-06 22:06:13,414 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 309 transitions. Word has length 156 [2023-11-06 22:06:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:13,415 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 309 transitions. [2023-11-06 22:06:13,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 309 transitions. [2023-11-06 22:06:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:06:13,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:13,417 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:13,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:06:13,625 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:13,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1049635852, now seen corresponding path program 1 times [2023-11-06 22:06:13,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:13,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958746437] [2023-11-06 22:06:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:13,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:06:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967533732] [2023-11-06 22:06:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:13,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:13,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:06:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:06:14,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:17,106 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 22:06:17,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:17,847 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 22:06:18,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:18,236 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 22:06:18,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:18,652 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 22:06:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:18,966 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 22:06:19,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,256 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 22:06:19,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,494 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 22:06:19,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 22:06:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,741 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 22:06:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,760 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 22:06:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 22:06:19,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-06 22:06:19,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 11 [2023-11-06 22:06:19,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,876 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 18 [2023-11-06 22:06:19,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:19,953 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 23 [2023-11-06 22:06:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:20,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:20,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2023-11-06 22:06:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 399 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-06 22:06:20,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:20,110 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1982 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| c_~var_1_15_Pointer~0.base v_ArrVal_1982) c_~var_1_12_Pointer~0.base) c_~var_1_12_Pointer~0.offset) 1))) is different from false [2023-11-06 22:06:20,121 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1982 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (< 0 (+ (select (select (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base (store (select |c_#memory_int| c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset (select (select |c_#memory_int| c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset))) c_~var_1_15_Pointer~0.base v_ArrVal_1982) c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 1))) is different from false [2023-11-06 22:06:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958746437] [2023-11-06 22:06:20,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:06:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967533732] [2023-11-06 22:06:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967533732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:20,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:06:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-06 22:06:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799864937] [2023-11-06 22:06:20,224 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:06:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:06:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=337, Unknown=4, NotChecked=78, Total=506 [2023-11-06 22:06:20,226 INFO L87 Difference]: Start difference. First operand 217 states and 309 transitions. Second operand has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 22:06:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:22,420 INFO L93 Difference]: Finished difference Result 532 states and 753 transitions. [2023-11-06 22:06:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:06:22,421 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 157 [2023-11-06 22:06:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:22,424 INFO L225 Difference]: With dead ends: 532 [2023-11-06 22:06:22,424 INFO L226 Difference]: Without dead ends: 318 [2023-11-06 22:06:22,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=212, Invalid=722, Unknown=4, NotChecked=118, Total=1056 [2023-11-06 22:06:22,427 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 849 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:22,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1248 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:06:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-06 22:06:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 215. [2023-11-06 22:06:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 194 states have (on average 1.3969072164948453) internal successors, (271), 194 states have internal predecessors, (271), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:06:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 305 transitions. [2023-11-06 22:06:22,458 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 305 transitions. Word has length 157 [2023-11-06 22:06:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:22,459 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 305 transitions. [2023-11-06 22:06:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 22:06:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 305 transitions. [2023-11-06 22:06:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:06:22,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:22,462 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:22,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:06:22,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:22,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1322103410, now seen corresponding path program 1 times [2023-11-06 22:06:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231254768] [2023-11-06 22:06:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:22,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:06:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085992947] [2023-11-06 22:06:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:22,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:22,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:06:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:06:23,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:24,033 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:06:24,033 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:06:24,060 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 22:06:24,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:24,163 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 22:06:24,191 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:06:24,191 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 29 treesize of output 25 [2023-11-06 22:06:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:06:24,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:06:24,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231254768] [2023-11-06 22:06:24,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:06:24,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085992947] [2023-11-06 22:06:24,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085992947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:24,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:24,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:06:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508919182] [2023-11-06 22:06:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:06:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:06:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:06:24,217 INFO L87 Difference]: Start difference. First operand 215 states and 305 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:24,815 INFO L93 Difference]: Finished difference Result 485 states and 688 transitions. [2023-11-06 22:06:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:06:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-06 22:06:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:24,820 INFO L225 Difference]: With dead ends: 485 [2023-11-06 22:06:24,820 INFO L226 Difference]: Without dead ends: 273 [2023-11-06 22:06:24,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:06:24,822 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 435 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:24,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 643 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:06:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-06 22:06:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 219. [2023-11-06 22:06:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 198 states have (on average 1.3888888888888888) internal successors, (275), 198 states have internal predecessors, (275), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:06:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 309 transitions. [2023-11-06 22:06:24,856 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 309 transitions. Word has length 157 [2023-11-06 22:06:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:24,856 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 309 transitions. [2023-11-06 22:06:24,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:06:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 309 transitions. [2023-11-06 22:06:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:06:24,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:24,858 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:24,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:06:25,066 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:25,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2139751860, now seen corresponding path program 1 times [2023-11-06 22:06:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254851426] [2023-11-06 22:06:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:25,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:25,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:06:25,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891457826] [2023-11-06 22:06:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:25,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:25,151 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:25,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:06:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:25,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-06 22:06:25,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:27,764 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 22:06:29,148 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 25 treesize of output 13 [2023-11-06 22:06:30,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:30,721 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 25 treesize of output 23 [2023-11-06 22:06:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:31,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:31,836 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 25 treesize of output 23 [2023-11-06 22:06:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:32,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:32,734 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 25 treesize of output 23 [2023-11-06 22:06:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:33,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:33,366 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 25 treesize of output 23 [2023-11-06 22:06:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:33,943 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 25 treesize of output 23 [2023-11-06 22:06:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:34,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:34,527 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 25 treesize of output 23 [2023-11-06 22:06:35,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,030 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 25 treesize of output 23 [2023-11-06 22:06:35,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,446 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 25 treesize of output 23 [2023-11-06 22:06:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,879 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 25 treesize of output 23 [2023-11-06 22:06:35,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-11-06 22:06:35,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-06 22:06:35,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-11-06 22:06:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-11-06 22:06:36,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,018 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 25 treesize of output 23 [2023-11-06 22:06:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,121 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 25 treesize of output 23 [2023-11-06 22:06:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,192 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 25 treesize of output 23 [2023-11-06 22:06:36,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:36,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 113 [2023-11-06 22:06:36,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-11-06 22:06:36,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-11-06 22:06:37,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:37,639 INFO L322 Elim1Store]: treesize reduction 36, result has 57.6 percent of original size [2023-11-06 22:06:37,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 157 treesize of output 125 [2023-11-06 22:06:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 521 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:06:37,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254851426] [2023-11-06 22:07:09,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:09,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891457826] [2023-11-06 22:07:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891457826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:09,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:07:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2023-11-06 22:07:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418160185] [2023-11-06 22:07:09,091 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:07:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:07:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:07:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1758, Unknown=17, NotChecked=0, Total=2162 [2023-11-06 22:07:09,094 INFO L87 Difference]: Start difference. First operand 219 states and 309 transitions. Second operand has 35 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 13 states have call successors, (17), 13 states have call predecessors, (17), 14 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-06 22:07:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:19,798 INFO L93 Difference]: Finished difference Result 626 states and 878 transitions. [2023-11-06 22:07:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-06 22:07:19,801 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 13 states have call successors, (17), 13 states have call predecessors, (17), 14 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) Word has length 157 [2023-11-06 22:07:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:19,804 INFO L225 Difference]: With dead ends: 626 [2023-11-06 22:07:19,804 INFO L226 Difference]: Without dead ends: 410 [2023-11-06 22:07:19,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=1234, Invalid=4755, Unknown=17, NotChecked=0, Total=6006 [2023-11-06 22:07:19,808 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1990 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:19,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 3822 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:07:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-06 22:07:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 241. [2023-11-06 22:07:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 217 states have (on average 1.3778801843317972) internal successors, (299), 217 states have internal predecessors, (299), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:07:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2023-11-06 22:07:19,845 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 157 [2023-11-06 22:07:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:19,846 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2023-11-06 22:07:19,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 31 states have internal predecessors, (114), 13 states have call successors, (17), 13 states have call predecessors, (17), 14 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-06 22:07:19,846 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2023-11-06 22:07:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:07:19,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:19,848 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:19,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:07:20,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:20,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1134147082, now seen corresponding path program 1 times [2023-11-06 22:07:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479321381] [2023-11-06 22:07:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:20,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171357964] [2023-11-06 22:07:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:20,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:20,101 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:20,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:07:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:20,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:07:20,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:21,624 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 22:07:21,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:21,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:21,827 INFO L322 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2023-11-06 22:07:21,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 38 [2023-11-06 22:07:21,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-11-06 22:07:22,131 INFO L322 Elim1Store]: treesize reduction 3, result has 91.9 percent of original size [2023-11-06 22:07:22,131 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 65 [2023-11-06 22:07:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:07:22,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479321381] [2023-11-06 22:07:22,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171357964] [2023-11-06 22:07:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171357964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:07:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787458278] [2023-11-06 22:07:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:22,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:07:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:07:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:07:22,180 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:23,780 INFO L93 Difference]: Finished difference Result 569 states and 787 transitions. [2023-11-06 22:07:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:07:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-06 22:07:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:23,792 INFO L225 Difference]: With dead ends: 569 [2023-11-06 22:07:23,792 INFO L226 Difference]: Without dead ends: 331 [2023-11-06 22:07:23,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:07:23,794 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 554 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:23,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1414 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:07:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-06 22:07:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 241. [2023-11-06 22:07:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 217 states have (on average 1.3732718894009217) internal successors, (298), 217 states have internal predecessors, (298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:07:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 332 transitions. [2023-11-06 22:07:23,837 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 332 transitions. Word has length 157 [2023-11-06 22:07:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:23,838 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 332 transitions. [2023-11-06 22:07:23,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 332 transitions. [2023-11-06 22:07:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:07:23,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:23,841 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:23,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:24,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:07:24,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:24,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash 349777102, now seen corresponding path program 1 times [2023-11-06 22:07:24,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:24,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525897247] [2023-11-06 22:07:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:24,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:24,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328141637] [2023-11-06 22:07:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:24,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:24,095 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:24,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:07:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:24,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:07:24,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:25,631 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 22:07:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:25,822 INFO L322 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2023-11-06 22:07:25,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 36 [2023-11-06 22:07:25,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-11-06 22:07:26,075 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:26,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 64 [2023-11-06 22:07:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:07:26,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:26,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525897247] [2023-11-06 22:07:26,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328141637] [2023-11-06 22:07:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328141637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:26,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:26,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:07:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511134467] [2023-11-06 22:07:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:26,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:07:26,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:07:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:07:26,142 INFO L87 Difference]: Start difference. First operand 241 states and 332 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:27,562 INFO L93 Difference]: Finished difference Result 675 states and 936 transitions. [2023-11-06 22:07:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:07:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-06 22:07:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:27,568 INFO L225 Difference]: With dead ends: 675 [2023-11-06 22:07:27,568 INFO L226 Difference]: Without dead ends: 437 [2023-11-06 22:07:27,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:07:27,570 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 590 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:27,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1487 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:07:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-06 22:07:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 248. [2023-11-06 22:07:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 224 states have (on average 1.3705357142857142) internal successors, (307), 224 states have internal predecessors, (307), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:07:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 341 transitions. [2023-11-06 22:07:27,602 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 341 transitions. Word has length 157 [2023-11-06 22:07:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:27,602 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 341 transitions. [2023-11-06 22:07:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 341 transitions. [2023-11-06 22:07:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:07:27,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:27,604 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:27,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:27,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:27,805 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:27,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -671291252, now seen corresponding path program 1 times [2023-11-06 22:07:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:27,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126895030] [2023-11-06 22:07:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:27,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116869251] [2023-11-06 22:07:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:27,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:27,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:27,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:27,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:07:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:28,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 22:07:28,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:29,213 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:07:29,213 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:07:29,234 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 22:07:29,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:29,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2023-11-06 22:07:29,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 22:07:29,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:07:29,625 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:29,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 77 [2023-11-06 22:07:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-06 22:07:29,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:07:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:07:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126895030] [2023-11-06 22:07:30,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116869251] [2023-11-06 22:07:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116869251] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:07:30,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:07:30,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2023-11-06 22:07:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842343745] [2023-11-06 22:07:30,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:30,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:07:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:07:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:07:30,181 INFO L87 Difference]: Start difference. First operand 248 states and 341 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:31,785 INFO L93 Difference]: Finished difference Result 669 states and 929 transitions. [2023-11-06 22:07:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:07:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-06 22:07:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:31,788 INFO L225 Difference]: With dead ends: 669 [2023-11-06 22:07:31,789 INFO L226 Difference]: Without dead ends: 424 [2023-11-06 22:07:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:07:31,791 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 303 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:31,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1857 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:07:31,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-06 22:07:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 255. [2023-11-06 22:07:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 231 states have (on average 1.3766233766233766) internal successors, (318), 231 states have internal predecessors, (318), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:07:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 352 transitions. [2023-11-06 22:07:31,824 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 352 transitions. Word has length 157 [2023-11-06 22:07:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:31,825 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 352 transitions. [2023-11-06 22:07:31,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 352 transitions. [2023-11-06 22:07:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:07:31,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:31,827 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:31,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:32,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:32,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1644367604, now seen corresponding path program 1 times [2023-11-06 22:07:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687309824] [2023-11-06 22:07:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:32,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:32,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334499162] [2023-11-06 22:07:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:32,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:32,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:32,082 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:32,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:07:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:32,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:07:32,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:33,984 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:07:33,984 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-06 22:07:34,016 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 22:07:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:34,166 INFO L322 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-06 22:07:34,167 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 2 case distinctions, treesize of input 26 treesize of output 27 [2023-11-06 22:07:34,255 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:07:34,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 39 [2023-11-06 22:07:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 22:07:34,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687309824] [2023-11-06 22:07:34,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:07:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334499162] [2023-11-06 22:07:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334499162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:34,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:07:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504165442] [2023-11-06 22:07:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:07:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:07:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:07:34,286 INFO L87 Difference]: Start difference. First operand 255 states and 352 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:35,145 INFO L93 Difference]: Finished difference Result 636 states and 882 transitions. [2023-11-06 22:07:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:07:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-06 22:07:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:35,152 INFO L225 Difference]: With dead ends: 636 [2023-11-06 22:07:35,152 INFO L226 Difference]: Without dead ends: 384 [2023-11-06 22:07:35,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:07:35,155 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 342 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:35,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1004 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:07:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-06 22:07:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 251. [2023-11-06 22:07:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 227 states have (on average 1.3700440528634361) internal successors, (311), 227 states have internal predecessors, (311), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 22:07:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 345 transitions. [2023-11-06 22:07:35,188 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 345 transitions. Word has length 157 [2023-11-06 22:07:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 345 transitions. [2023-11-06 22:07:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 22:07:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 345 transitions. [2023-11-06 22:07:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:07:35,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:35,191 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:35,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:35,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:35,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:35,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1999203250, now seen corresponding path program 1 times [2023-11-06 22:07:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925938010] [2023-11-06 22:07:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:35,435 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:07:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062745393] [2023-11-06 22:07:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:07:35,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,437 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1d9abe-6265-4d5c-836a-6e0013dda14a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:07:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:35,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-06 22:07:35,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:36,369 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 22:07:38,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:38,425 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 12 [2023-11-06 22:07:39,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:39,401 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 12 [2023-11-06 22:07:40,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:40,285 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 12 [2023-11-06 22:07:41,145 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 12 [2023-11-06 22:07:41,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:41,957 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 12 [2023-11-06 22:07:42,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:42,495 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 12 [2023-11-06 22:07:43,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:43,024 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 12 [2023-11-06 22:07:43,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:43,474 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 12 [2023-11-06 22:07:43,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:43,880 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 12 [2023-11-06 22:07:44,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,251 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 12 [2023-11-06 22:07:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:44,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:55,939 WARN L293 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 325 DAG size of output: 119 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-06 22:07:55,940 INFO L322 Elim1Store]: treesize reduction 1485, result has 19.2 percent of original size [2023-11-06 22:07:55,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 12 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 17 new quantified variables, introduced 54 case distinctions, treesize of input 873 treesize of output 2146 [2023-11-06 22:07:57,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33