./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ddb079fdd3784496be289fc7e9dce8b5519454d886eda78b14b11167cae45c0d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:32:11,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:32:11,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:32:11,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:32:11,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:32:11,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:32:11,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:32:11,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:32:11,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:32:11,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:32:11,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:32:11,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:32:11,469 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:32:11,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:32:11,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:32:11,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:32:11,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:32:11,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:32:11,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:32:11,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:32:11,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:32:11,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:32:11,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:32:11,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:32:11,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:32:11,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:32:11,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:32:11,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:32:11,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:11,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:32:11,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:32:11,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:32:11,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:32:11,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:32:11,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:32:11,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:32:11,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:32:11,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:32:11,483 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:32:11,483 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_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddb079fdd3784496be289fc7e9dce8b5519454d886eda78b14b11167cae45c0d [2023-11-12 02:32:11,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:32:11,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:32:11,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:32:11,817 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:32:11,818 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:32:11,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i [2023-11-12 02:32:14,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:32:15,312 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:32:15,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i [2023-11-12 02:32:15,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/data/c5c95fc4a/d331dd8871c14ed78aec47fa581f7e10/FLAGf16bec041 [2023-11-12 02:32:15,345 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/data/c5c95fc4a/d331dd8871c14ed78aec47fa581f7e10 [2023-11-12 02:32:15,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:32:15,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:32:15,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:15,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:32:15,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:32:15,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:15" (1/1) ... [2023-11-12 02:32:15,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf8373b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:15, skipping insertion in model container [2023-11-12 02:32:15,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:32:15" (1/1) ... [2023-11-12 02:32:15,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:32:15,626 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_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i[916,929] [2023-11-12 02:32:15,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:15,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:32:15,972 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_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i[916,929] [2023-11-12 02:32:16,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:32:16,127 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:32:16,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16 WrapperNode [2023-11-12 02:32:16,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:32:16,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:16,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:32:16,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:32:16,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,297 INFO L138 Inliner]: procedures = 26, calls = 109, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 910 [2023-11-12 02:32:16,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:32:16,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:32:16,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:32:16,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:32:16,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:32:16,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:32:16,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:32:16,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:32:16,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (1/1) ... [2023-11-12 02:32:16,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:32:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:16,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:32:16,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:32:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:32:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:32:16,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:32:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:32:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:32:16,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:32:16,802 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:32:16,804 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:32:18,087 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:32:18,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:32:18,107 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:32:18,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:18 BoogieIcfgContainer [2023-11-12 02:32:18,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:32:18,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:32:18,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:32:18,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:32:18,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:32:15" (1/3) ... [2023-11-12 02:32:18,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4607fd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:18, skipping insertion in model container [2023-11-12 02:32:18,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:32:16" (2/3) ... [2023-11-12 02:32:18,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4607fd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:18, skipping insertion in model container [2023-11-12 02:32:18,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:18" (3/3) ... [2023-11-12 02:32:18,123 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-63.i [2023-11-12 02:32:18,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:32:18,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:32:18,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:18,224 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a77d474, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:18,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:32:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 243 states have (on average 1.6584362139917694) internal successors, (403), 244 states have internal predecessors, (403), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:32:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:18,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:18,289 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:18,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:18,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1786956118, now seen corresponding path program 1 times [2023-11-12 02:32:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306413795] [2023-11-12 02:32:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:18,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:18,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306413795] [2023-11-12 02:32:18,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:32:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145079993] [2023-11-12 02:32:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:18,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:18,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:32:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:19,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:32:19,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 18050 trivial. 0 not checked. [2023-11-12 02:32:19,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145079993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:19,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395862950] [2023-11-12 02:32:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:19,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:32:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:32:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:32:19,733 INFO L87 Difference]: Start difference. First operand has 342 states, 243 states have (on average 1.6584362139917694) internal successors, (403), 244 states have internal predecessors, (403), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) [2023-11-12 02:32:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:19,818 INFO L93 Difference]: Finished difference Result 676 states and 1278 transitions. [2023-11-12 02:32:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:32:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) Word has length 641 [2023-11-12 02:32:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:19,835 INFO L225 Difference]: With dead ends: 676 [2023-11-12 02:32:19,836 INFO L226 Difference]: Without dead ends: 337 [2023-11-12 02:32:19,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:32:19,848 INFO L413 NwaCegarLoop]: 581 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, 581 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 [2023-11-12 02:32:19,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-12 02:32:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-11-12 02:32:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 239 states have (on average 1.6276150627615062) internal successors, (389), 239 states have internal predecessors, (389), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:32:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 581 transitions. [2023-11-12 02:32:19,990 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 581 transitions. Word has length 641 [2023-11-12 02:32:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:19,991 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 581 transitions. [2023-11-12 02:32:19,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) [2023-11-12 02:32:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 581 transitions. [2023-11-12 02:32:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:20,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:20,015 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:20,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:20,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:20,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:20,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:20,224 INFO L85 PathProgramCache]: Analyzing trace with hash 338792218, now seen corresponding path program 1 times [2023-11-12 02:32:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:20,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967256168] [2023-11-12 02:32:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:20,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:20,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347253056] [2023-11-12 02:32:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:20,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:20,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:20,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:20,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:32:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:20,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:21,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:21,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967256168] [2023-11-12 02:32:21,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347253056] [2023-11-12 02:32:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347253056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:21,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:21,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52061129] [2023-11-12 02:32:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:21,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:21,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:21,140 INFO L87 Difference]: Start difference. First operand 337 states and 581 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:21,236 INFO L93 Difference]: Finished difference Result 672 states and 1161 transitions. [2023-11-12 02:32:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:21,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:21,250 INFO L225 Difference]: With dead ends: 672 [2023-11-12 02:32:21,251 INFO L226 Difference]: Without dead ends: 338 [2023-11-12 02:32:21,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:21,255 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 0 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:21,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-12 02:32:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-12 02:32:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 240 states have (on average 1.625) internal successors, (390), 240 states have internal predecessors, (390), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:32:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 582 transitions. [2023-11-12 02:32:21,319 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 582 transitions. Word has length 641 [2023-11-12 02:32:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 582 transitions. [2023-11-12 02:32:21,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 582 transitions. [2023-11-12 02:32:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:21,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:21,335 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:21,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:32:21,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:21,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:21,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash 772521304, now seen corresponding path program 1 times [2023-11-12 02:32:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716099349] [2023-11-12 02:32:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:21,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997652828] [2023-11-12 02:32:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:21,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:21,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:21,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:21,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:32:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:22,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:22,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:22,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:22,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716099349] [2023-11-12 02:32:22,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:22,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997652828] [2023-11-12 02:32:22,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997652828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410423794] [2023-11-12 02:32:22,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:22,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:22,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:22,344 INFO L87 Difference]: Start difference. First operand 338 states and 582 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:22,422 INFO L93 Difference]: Finished difference Result 898 states and 1552 transitions. [2023-11-12 02:32:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:22,430 INFO L225 Difference]: With dead ends: 898 [2023-11-12 02:32:22,430 INFO L226 Difference]: Without dead ends: 563 [2023-11-12 02:32:22,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:22,434 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 366 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:22,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1136 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-12 02:32:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2023-11-12 02:32:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 419 states have (on average 1.6563245823389021) internal successors, (694), 420 states have internal predecessors, (694), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-12 02:32:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 970 transitions. [2023-11-12 02:32:22,498 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 970 transitions. Word has length 641 [2023-11-12 02:32:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:22,500 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 970 transitions. [2023-11-12 02:32:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 970 transitions. [2023-11-12 02:32:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:22,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:22,509 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:22,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:22,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:22,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:22,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1451793558, now seen corresponding path program 1 times [2023-11-12 02:32:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497706780] [2023-11-12 02:32:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:22,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334622866] [2023-11-12 02:32:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:22,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:22,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:32:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:23,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:23,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:23,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:23,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497706780] [2023-11-12 02:32:23,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334622866] [2023-11-12 02:32:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334622866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032019958] [2023-11-12 02:32:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:23,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:23,456 INFO L87 Difference]: Start difference. First operand 560 states and 970 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:23,548 INFO L93 Difference]: Finished difference Result 1553 states and 2697 transitions. [2023-11-12 02:32:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:23,559 INFO L225 Difference]: With dead ends: 1553 [2023-11-12 02:32:23,560 INFO L226 Difference]: Without dead ends: 996 [2023-11-12 02:32:23,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:23,563 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 373 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:23,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1494 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-11-12 02:32:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 992. [2023-11-12 02:32:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 773 states have (on average 1.6701164294954722) internal successors, (1291), 776 states have internal predecessors, (1291), 214 states have call successors, (214), 4 states have call predecessors, (214), 4 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) [2023-11-12 02:32:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1719 transitions. [2023-11-12 02:32:23,679 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1719 transitions. Word has length 641 [2023-11-12 02:32:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:23,680 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1719 transitions. [2023-11-12 02:32:23,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1719 transitions. [2023-11-12 02:32:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:23,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:23,690 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:23,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-12 02:32:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:23,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:23,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 457099860, now seen corresponding path program 1 times [2023-11-12 02:32:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099229384] [2023-11-12 02:32:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:24,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:24,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771132799] [2023-11-12 02:32:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:24,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:24,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:24,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:32:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:24,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:24,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:24,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099229384] [2023-11-12 02:32:24,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771132799] [2023-11-12 02:32:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771132799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111606534] [2023-11-12 02:32:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:24,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:24,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:24,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:24,711 INFO L87 Difference]: Start difference. First operand 992 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:24,834 INFO L93 Difference]: Finished difference Result 2966 states and 5143 transitions. [2023-11-12 02:32:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:24,852 INFO L225 Difference]: With dead ends: 2966 [2023-11-12 02:32:24,852 INFO L226 Difference]: Without dead ends: 1977 [2023-11-12 02:32:24,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:24,857 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 546 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:24,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1563 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-11-12 02:32:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2023-11-12 02:32:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1538 states have (on average 1.6657997399219766) internal successors, (2562), 1544 states have internal predecessors, (2562), 428 states have call successors, (428), 8 states have call predecessors, (428), 8 states have return successors, (428), 422 states have call predecessors, (428), 428 states have call successors, (428) [2023-11-12 02:32:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3418 transitions. [2023-11-12 02:32:25,102 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3418 transitions. Word has length 641 [2023-11-12 02:32:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:25,105 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 3418 transitions. [2023-11-12 02:32:25,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3418 transitions. [2023-11-12 02:32:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:25,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:25,118 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:25,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:25,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:25,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1786883438, now seen corresponding path program 1 times [2023-11-12 02:32:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391869911] [2023-11-12 02:32:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:25,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:25,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369474669] [2023-11-12 02:32:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:25,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:25,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:25,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:25,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:32:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:25,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:26,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:26,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391869911] [2023-11-12 02:32:26,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369474669] [2023-11-12 02:32:26,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369474669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:26,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881700697] [2023-11-12 02:32:26,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:26,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:26,074 INFO L87 Difference]: Start difference. First operand 1975 states and 3418 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:26,304 INFO L93 Difference]: Finished difference Result 5895 states and 10200 transitions. [2023-11-12 02:32:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:26,336 INFO L225 Difference]: With dead ends: 5895 [2023-11-12 02:32:26,336 INFO L226 Difference]: Without dead ends: 3923 [2023-11-12 02:32:26,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:26,345 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 556 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:26,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1684 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2023-11-12 02:32:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3889. [2023-11-12 02:32:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 3016 states have (on average 1.6498673740053051) internal successors, (4976), 3028 states have internal predecessors, (4976), 856 states have call successors, (856), 16 states have call predecessors, (856), 16 states have return successors, (856), 844 states have call predecessors, (856), 856 states have call successors, (856) [2023-11-12 02:32:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 6688 transitions. [2023-11-12 02:32:26,804 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 6688 transitions. Word has length 641 [2023-11-12 02:32:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:26,805 INFO L495 AbstractCegarLoop]: Abstraction has 3889 states and 6688 transitions. [2023-11-12 02:32:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 6688 transitions. [2023-11-12 02:32:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:26,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:26,816 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:26,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:27,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:27,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1157102352, now seen corresponding path program 1 times [2023-11-12 02:32:27,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:27,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627925402] [2023-11-12 02:32:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:27,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442083492] [2023-11-12 02:32:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:27,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:27,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:27,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:27,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:32:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:27,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:32:27,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:27,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627925402] [2023-11-12 02:32:27,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442083492] [2023-11-12 02:32:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442083492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446167107] [2023-11-12 02:32:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:27,811 INFO L87 Difference]: Start difference. First operand 3889 states and 6688 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:28,024 INFO L93 Difference]: Finished difference Result 8161 states and 13982 transitions. [2023-11-12 02:32:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:28,058 INFO L225 Difference]: With dead ends: 8161 [2023-11-12 02:32:28,058 INFO L226 Difference]: Without dead ends: 4275 [2023-11-12 02:32:28,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:28,072 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 37 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1142 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2023-11-12 02:32:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4065. [2023-11-12 02:32:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 3192 states have (on average 1.644110275689223) internal successors, (5248), 3204 states have internal predecessors, (5248), 856 states have call successors, (856), 16 states have call predecessors, (856), 16 states have return successors, (856), 844 states have call predecessors, (856), 856 states have call successors, (856) [2023-11-12 02:32:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 6960 transitions. [2023-11-12 02:32:28,755 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 6960 transitions. Word has length 641 [2023-11-12 02:32:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:28,757 INFO L495 AbstractCegarLoop]: Abstraction has 4065 states and 6960 transitions. [2023-11-12 02:32:28,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 6960 transitions. [2023-11-12 02:32:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:28,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:28,767 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:28,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:32:28,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:28,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash -431245550, now seen corresponding path program 1 times [2023-11-12 02:32:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:28,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412621473] [2023-11-12 02:32:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:29,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671857554] [2023-11-12 02:32:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:29,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:29,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:29,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:32:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:29,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:32:29,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:31,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:31,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412621473] [2023-11-12 02:32:31,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671857554] [2023-11-12 02:32:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671857554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:31,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:31,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422513489] [2023-11-12 02:32:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:31,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:31,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:31,846 INFO L87 Difference]: Start difference. First operand 4065 states and 6960 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:32,108 INFO L93 Difference]: Finished difference Result 10163 states and 17420 transitions. [2023-11-12 02:32:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:32,171 INFO L225 Difference]: With dead ends: 10163 [2023-11-12 02:32:32,171 INFO L226 Difference]: Without dead ends: 6101 [2023-11-12 02:32:32,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:32,187 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 259 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:32,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1136 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6101 states. [2023-11-12 02:32:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6101 to 6003. [2023-11-12 02:32:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 4694 states have (on average 1.6322965487856838) internal successors, (7662), 4712 states have internal predecessors, (7662), 1284 states have call successors, (1284), 24 states have call predecessors, (1284), 24 states have return successors, (1284), 1266 states have call predecessors, (1284), 1284 states have call successors, (1284) [2023-11-12 02:32:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 10230 transitions. [2023-11-12 02:32:32,904 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 10230 transitions. Word has length 641 [2023-11-12 02:32:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:32,905 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 10230 transitions. [2023-11-12 02:32:32,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 10230 transitions. [2023-11-12 02:32:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-11-12 02:32:32,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:32,922 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:32,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:32:33,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:33,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 937742358, now seen corresponding path program 1 times [2023-11-12 02:32:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670393003] [2023-11-12 02:32:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:33,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788605272] [2023-11-12 02:32:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:33,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:33,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:33,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:32:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:33,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:32:33,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:35,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670393003] [2023-11-12 02:32:35,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788605272] [2023-11-12 02:32:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788605272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000939988] [2023-11-12 02:32:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:35,826 INFO L87 Difference]: Start difference. First operand 6003 states and 10230 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:36,252 INFO L93 Difference]: Finished difference Result 18003 states and 30684 transitions. [2023-11-12 02:32:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-11-12 02:32:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:36,333 INFO L225 Difference]: With dead ends: 18003 [2023-11-12 02:32:36,333 INFO L226 Difference]: Without dead ends: 12003 [2023-11-12 02:32:36,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:36,359 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 305 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:36,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1148 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12003 states. [2023-11-12 02:32:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12003 to 11855. [2023-11-12 02:32:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11855 states, 9238 states have (on average 1.6217796059753193) internal successors, (14982), 9274 states have internal predecessors, (14982), 2568 states have call successors, (2568), 48 states have call predecessors, (2568), 48 states have return successors, (2568), 2532 states have call predecessors, (2568), 2568 states have call successors, (2568) [2023-11-12 02:32:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11855 states to 11855 states and 20118 transitions. [2023-11-12 02:32:37,765 INFO L78 Accepts]: Start accepts. Automaton has 11855 states and 20118 transitions. Word has length 641 [2023-11-12 02:32:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:37,766 INFO L495 AbstractCegarLoop]: Abstraction has 11855 states and 20118 transitions. [2023-11-12 02:32:37,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 11855 states and 20118 transitions. [2023-11-12 02:32:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-11-12 02:32:37,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:37,784 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:37,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:37,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:37,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:37,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:37,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1004661497, now seen corresponding path program 1 times [2023-11-12 02:32:37,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:37,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969317902] [2023-11-12 02:32:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:37,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:38,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:38,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209854938] [2023-11-12 02:32:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:38,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:38,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:38,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:38,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:32:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:38,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:32:38,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 8835 proven. 171 refuted. 0 times theorem prover too weak. 9234 trivial. 0 not checked. [2023-11-12 02:32:39,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:32:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 114 proven. 171 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-11-12 02:32:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969317902] [2023-11-12 02:32:39,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209854938] [2023-11-12 02:32:39,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209854938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:32:39,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:32:39,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:32:39,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101569124] [2023-11-12 02:32:39,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:32:39,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:39,934 INFO L87 Difference]: Start difference. First operand 11855 states and 20118 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-12 02:32:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:41,323 INFO L93 Difference]: Finished difference Result 18841 states and 31681 transitions. [2023-11-12 02:32:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:32:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 642 [2023-11-12 02:32:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:41,352 INFO L225 Difference]: With dead ends: 18841 [2023-11-12 02:32:41,352 INFO L226 Difference]: Without dead ends: 6989 [2023-11-12 02:32:41,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:41,388 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1039 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:41,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1318 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:32:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2023-11-12 02:32:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 6914. [2023-11-12 02:32:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 5147 states have (on average 1.5719836798134836) internal successors, (8091), 5160 states have internal predecessors, (8091), 1694 states have call successors, (1694), 72 states have call predecessors, (1694), 72 states have return successors, (1694), 1681 states have call predecessors, (1694), 1694 states have call successors, (1694) [2023-11-12 02:32:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11479 transitions. [2023-11-12 02:32:42,221 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11479 transitions. Word has length 642 [2023-11-12 02:32:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:42,222 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11479 transitions. [2023-11-12 02:32:42,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-12 02:32:42,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11479 transitions. [2023-11-12 02:32:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-11-12 02:32:42,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:42,235 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:42,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:42,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:32:42,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:42,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1394506326, now seen corresponding path program 1 times [2023-11-12 02:32:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900915319] [2023-11-12 02:32:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:42,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056396148] [2023-11-12 02:32:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:42,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:42,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:32:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:43,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:32:43,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9083 proven. 159 refuted. 0 times theorem prover too weak. 8998 trivial. 0 not checked. [2023-11-12 02:32:43,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:32:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 126 proven. 159 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-11-12 02:32:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900915319] [2023-11-12 02:32:44,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056396148] [2023-11-12 02:32:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056396148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:32:44,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:32:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:32:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322525528] [2023-11-12 02:32:44,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:32:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:44,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:44,146 INFO L87 Difference]: Start difference. First operand 6914 states and 11479 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-12 02:32:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:45,333 INFO L93 Difference]: Finished difference Result 11109 states and 18383 transitions. [2023-11-12 02:32:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:32:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 644 [2023-11-12 02:32:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:45,351 INFO L225 Difference]: With dead ends: 11109 [2023-11-12 02:32:45,351 INFO L226 Difference]: Without dead ends: 4261 [2023-11-12 02:32:45,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1280 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:45,367 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1040 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:45,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1346 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:32:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2023-11-12 02:32:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4210. [2023-11-12 02:32:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 2965 states have (on average 1.5328836424957841) internal successors, (4545), 2966 states have internal predecessors, (4545), 1194 states have call successors, (1194), 50 states have call predecessors, (1194), 50 states have return successors, (1194), 1193 states have call predecessors, (1194), 1194 states have call successors, (1194) [2023-11-12 02:32:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6933 transitions. [2023-11-12 02:32:45,886 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6933 transitions. Word has length 644 [2023-11-12 02:32:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:45,887 INFO L495 AbstractCegarLoop]: Abstraction has 4210 states and 6933 transitions. [2023-11-12 02:32:45,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-12 02:32:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6933 transitions. [2023-11-12 02:32:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2023-11-12 02:32:45,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:45,897 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:45,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:46,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:32:46,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:46,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2007636917, now seen corresponding path program 1 times [2023-11-12 02:32:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284548660] [2023-11-12 02:32:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:46,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934936458] [2023-11-12 02:32:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:46,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:46,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:46,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:32:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:46,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:32:46,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:47,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284548660] [2023-11-12 02:32:47,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934936458] [2023-11-12 02:32:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934936458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:47,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:47,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:32:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009623635] [2023-11-12 02:32:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:47,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:32:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:47,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:32:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:32:47,692 INFO L87 Difference]: Start difference. First operand 4210 states and 6933 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:49,229 INFO L93 Difference]: Finished difference Result 12386 states and 20367 transitions. [2023-11-12 02:32:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:32:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 645 [2023-11-12 02:32:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:49,268 INFO L225 Difference]: With dead ends: 12386 [2023-11-12 02:32:49,268 INFO L226 Difference]: Without dead ends: 8256 [2023-11-12 02:32:49,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:32:49,282 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 567 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:49,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 4533 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:32:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states. [2023-11-12 02:32:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8256 to 4354. [2023-11-12 02:32:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 3109 states have (on average 1.5275008041170794) internal successors, (4749), 3110 states have internal predecessors, (4749), 1194 states have call successors, (1194), 50 states have call predecessors, (1194), 50 states have return successors, (1194), 1193 states have call predecessors, (1194), 1194 states have call successors, (1194) [2023-11-12 02:32:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 7137 transitions. [2023-11-12 02:32:50,314 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 7137 transitions. Word has length 645 [2023-11-12 02:32:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:50,316 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 7137 transitions. [2023-11-12 02:32:50,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 7137 transitions. [2023-11-12 02:32:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2023-11-12 02:32:50,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:50,331 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:50,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:50,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:32:50,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:50,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1180603310, now seen corresponding path program 1 times [2023-11-12 02:32:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738376756] [2023-11-12 02:32:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:50,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:50,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405355069] [2023-11-12 02:32:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:50,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:50,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:50,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:50,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:32:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:51,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:32:51,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:51,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:51,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738376756] [2023-11-12 02:32:51,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405355069] [2023-11-12 02:32:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405355069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730252685] [2023-11-12 02:32:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:51,506 INFO L87 Difference]: Start difference. First operand 4354 states and 7137 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:52,637 INFO L93 Difference]: Finished difference Result 12542 states and 20571 transitions. [2023-11-12 02:32:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 646 [2023-11-12 02:32:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:52,669 INFO L225 Difference]: With dead ends: 12542 [2023-11-12 02:32:52,669 INFO L226 Difference]: Without dead ends: 8268 [2023-11-12 02:32:52,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:52,680 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 552 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:52,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1138 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2023-11-12 02:32:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 4462. [2023-11-12 02:32:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 3217 states have (on average 1.5209822816288467) internal successors, (4893), 3218 states have internal predecessors, (4893), 1194 states have call successors, (1194), 50 states have call predecessors, (1194), 50 states have return successors, (1194), 1193 states have call predecessors, (1194), 1194 states have call successors, (1194) [2023-11-12 02:32:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 7281 transitions. [2023-11-12 02:32:53,820 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 7281 transitions. Word has length 646 [2023-11-12 02:32:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:53,822 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 7281 transitions. [2023-11-12 02:32:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 7281 transitions. [2023-11-12 02:32:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2023-11-12 02:32:53,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:53,832 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:53,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:32:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:32:54,042 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:54,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash -742047269, now seen corresponding path program 1 times [2023-11-12 02:32:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:54,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629681041] [2023-11-12 02:32:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:54,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:54,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:32:54,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764210107] [2023-11-12 02:32:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:54,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:32:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:32:54,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:32:54,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1eae8a8-feb6-4fc3-ae48-205741d7ab61/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:32:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:54,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:32:54,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:32:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-11-12 02:32:54,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:32:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629681041] [2023-11-12 02:32:54,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:32:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764210107] [2023-11-12 02:32:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764210107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:54,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:54,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301293372] [2023-11-12 02:32:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:54,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:54,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:54,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:54,933 INFO L87 Difference]: Start difference. First operand 4462 states and 7281 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-11-12 02:32:56,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:56,072 INFO L93 Difference]: Finished difference Result 12638 states and 20691 transitions. [2023-11-12 02:32:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:56,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 646 [2023-11-12 02:32:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:56,109 INFO L225 Difference]: With dead ends: 12638 [2023-11-12 02:32:56,109 INFO L226 Difference]: Without dead ends: 8256 [2023-11-12 02:32:56,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:56,121 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 548 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:56,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1658 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states.