./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/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_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/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_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/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 daf22da9b7e50e3668f3d2614a09dc89eb6381d258696004a4678815dde8cbcc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:36,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:36,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:12:36,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:36,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:36,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:36,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:36,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:36,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:36,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:36,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:36,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:36,267 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:36,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:36,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:36,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:36,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:36,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:36,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:36,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:36,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:36,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:36,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:36,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:36,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:36,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:36,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:36,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:36,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:36,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:36,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:36,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:36,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:36,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:36,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:36,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:36,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:36,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:36,282 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:36,282 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_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daf22da9b7e50e3668f3d2614a09dc89eb6381d258696004a4678815dde8cbcc [2023-11-12 02:12:36,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:36,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:36,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:36,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:36,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:36,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-11-12 02:12:39,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:40,073 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:40,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-11-12 02:12:40,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/data/9410390dd/706077ab874647f19917463ebfa00815/FLAGe597dce01 [2023-11-12 02:12:40,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/data/9410390dd/706077ab874647f19917463ebfa00815 [2023-11-12 02:12:40,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:40,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:40,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:40,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:40,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:40,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568c81ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40, skipping insertion in model container [2023-11-12 02:12:40,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,173 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:40,324 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_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i[916,929] [2023-11-12 02:12:40,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:40,521 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:40,533 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_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-61.i[916,929] [2023-11-12 02:12:40,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:40,621 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:40,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40 WrapperNode [2023-11-12 02:12:40,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:40,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:40,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:40,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:40,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,722 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 527 [2023-11-12 02:12:40,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:40,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:40,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:40,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:40,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:40,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:40,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:40,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:40,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (1/1) ... [2023-11-12 02:12:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:40,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:40,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:40,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:12:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:12:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:41,066 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:41,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:42,200 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:42,215 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:42,218 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:12:42,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:42 BoogieIcfgContainer [2023-11-12 02:12:42,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:42,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:42,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:42,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:40" (1/3) ... [2023-11-12 02:12:42,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c173c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:42, skipping insertion in model container [2023-11-12 02:12:42,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:40" (2/3) ... [2023-11-12 02:12:42,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c173c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:42, skipping insertion in model container [2023-11-12 02:12:42,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:42" (3/3) ... [2023-11-12 02:12:42,238 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-61.i [2023-11-12 02:12:42,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:42,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:12:42,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:42,324 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;@83c5abd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:42,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:12:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 144 states have (on average 1.5902777777777777) internal successors, (229), 145 states have internal predecessors, (229), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-12 02:12:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-12 02:12:42,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:42,362 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:42,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:42,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 932788159, now seen corresponding path program 1 times [2023-11-12 02:12:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131477259] [2023-11-12 02:12:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:42,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:42,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:42,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131477259] [2023-11-12 02:12:42,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:12:42,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95069636] [2023-11-12 02:12:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:42,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:42,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:42,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:43,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:12:43,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2023-11-12 02:12:43,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:43,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95069636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017213506] [2023-11-12 02:12:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:43,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:43,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:43,505 INFO L87 Difference]: Start difference. First operand has 218 states, 144 states have (on average 1.5902777777777777) internal successors, (229), 145 states have internal predecessors, (229), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-12 02:12:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:43,568 INFO L93 Difference]: Finished difference Result 429 states and 807 transitions. [2023-11-12 02:12:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 452 [2023-11-12 02:12:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:43,581 INFO L225 Difference]: With dead ends: 429 [2023-11-12 02:12:43,581 INFO L226 Difference]: Without dead ends: 214 [2023-11-12 02:12:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 451 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 02:12:43,592 INFO L413 NwaCegarLoop]: 362 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, 362 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 02:12:43,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-12 02:12:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-12 02:12:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.5602836879432624) internal successors, (220), 141 states have internal predecessors, (220), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-12 02:12:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 362 transitions. [2023-11-12 02:12:43,697 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 362 transitions. Word has length 452 [2023-11-12 02:12:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:43,700 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 362 transitions. [2023-11-12 02:12:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-12 02:12:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 362 transitions. [2023-11-12 02:12:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-12 02:12:43,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:43,723 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:43,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:43,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:12:43,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:43,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2140836653, now seen corresponding path program 1 times [2023-11-12 02:12:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:43,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675099806] [2023-11-12 02:12:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:43,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:44,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658838279] [2023-11-12 02:12:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:44,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:44,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:44,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:44,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:44,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:44,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:44,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675099806] [2023-11-12 02:12:44,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658838279] [2023-11-12 02:12:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658838279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:44,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:44,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720025001] [2023-11-12 02:12:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:44,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:44,646 INFO L87 Difference]: Start difference. First operand 214 states and 362 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:44,735 INFO L93 Difference]: Finished difference Result 425 states and 721 transitions. [2023-11-12 02:12:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:44,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 452 [2023-11-12 02:12:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:44,742 INFO L225 Difference]: With dead ends: 425 [2023-11-12 02:12:44,743 INFO L226 Difference]: Without dead ends: 214 [2023-11-12 02:12:44,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 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 02:12:44,745 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 31 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:44,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 685 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-12 02:12:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-12 02:12:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.553191489361702) internal successors, (219), 141 states have internal predecessors, (219), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-12 02:12:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 361 transitions. [2023-11-12 02:12:44,787 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 361 transitions. Word has length 452 [2023-11-12 02:12:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:44,790 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 361 transitions. [2023-11-12 02:12:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 361 transitions. [2023-11-12 02:12:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-12 02:12:44,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:44,802 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:44,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:45,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:45,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:45,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash 451892911, now seen corresponding path program 1 times [2023-11-12 02:12:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723784869] [2023-11-12 02:12:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:45,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619883995] [2023-11-12 02:12:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:45,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:45,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:45,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:12:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:45,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:45,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:45,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:45,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723784869] [2023-11-12 02:12:45,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619883995] [2023-11-12 02:12:45,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619883995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:45,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:45,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264510721] [2023-11-12 02:12:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:45,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:45,618 INFO L87 Difference]: Start difference. First operand 214 states and 361 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:45,700 INFO L93 Difference]: Finished difference Result 559 states and 946 transitions. [2023-11-12 02:12:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 452 [2023-11-12 02:12:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:45,707 INFO L225 Difference]: With dead ends: 559 [2023-11-12 02:12:45,707 INFO L226 Difference]: Without dead ends: 348 [2023-11-12 02:12:45,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 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 02:12:45,710 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 211 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:45,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 761 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-12 02:12:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 345. [2023-11-12 02:12:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 239 states have (on average 1.5857740585774058) internal successors, (379), 240 states have internal predecessors, (379), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 102 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-12 02:12:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 585 transitions. [2023-11-12 02:12:45,767 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 585 transitions. Word has length 452 [2023-11-12 02:12:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:45,769 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 585 transitions. [2023-11-12 02:12:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 585 transitions. [2023-11-12 02:12:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-12 02:12:45,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:45,774 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:45,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:45,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:45,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:45,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 373564143, now seen corresponding path program 1 times [2023-11-12 02:12:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77517184] [2023-11-12 02:12:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:46,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:46,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166499643] [2023-11-12 02:12:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:46,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:46,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:46,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:46,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:12:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:46,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:46,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:46,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77517184] [2023-11-12 02:12:46,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166499643] [2023-11-12 02:12:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166499643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:46,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:46,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961697591] [2023-11-12 02:12:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:46,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:46,532 INFO L87 Difference]: Start difference. First operand 345 states and 585 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:46,616 INFO L93 Difference]: Finished difference Result 956 states and 1624 transitions. [2023-11-12 02:12:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 452 [2023-11-12 02:12:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:46,625 INFO L225 Difference]: With dead ends: 956 [2023-11-12 02:12:46,625 INFO L226 Difference]: Without dead ends: 614 [2023-11-12 02:12:46,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 450 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 02:12:46,628 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 220 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:46,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 684 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-12 02:12:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2023-11-12 02:12:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 435 states have (on average 1.5770114942528735) internal successors, (686), 438 states have internal predecessors, (686), 171 states have call successors, (171), 4 states have call predecessors, (171), 4 states have return successors, (171), 168 states have call predecessors, (171), 171 states have call successors, (171) [2023-11-12 02:12:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1028 transitions. [2023-11-12 02:12:46,701 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1028 transitions. Word has length 452 [2023-11-12 02:12:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:46,703 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1028 transitions. [2023-11-12 02:12:46,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:46,704 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1028 transitions. [2023-11-12 02:12:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-11-12 02:12:46,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:46,709 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:46,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:46,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:46,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:46,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash -42309394, now seen corresponding path program 1 times [2023-11-12 02:12:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610048227] [2023-11-12 02:12:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:46,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:47,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563419596] [2023-11-12 02:12:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:47,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:47,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:47,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:12:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:47,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:12:47,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:47,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610048227] [2023-11-12 02:12:47,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563419596] [2023-11-12 02:12:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563419596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:47,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95879813] [2023-11-12 02:12:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:47,557 INFO L87 Difference]: Start difference. First operand 611 states and 1028 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:47,713 INFO L93 Difference]: Finished difference Result 1843 states and 3110 transitions. [2023-11-12 02:12:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2023-11-12 02:12:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:47,725 INFO L225 Difference]: With dead ends: 1843 [2023-11-12 02:12:47,726 INFO L226 Difference]: Without dead ends: 1235 [2023-11-12 02:12:47,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:47,729 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 354 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:47,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1460 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:12:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-11-12 02:12:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1221. [2023-11-12 02:12:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 870 states have (on average 1.5770114942528735) internal successors, (1372), 876 states have internal predecessors, (1372), 342 states have call successors, (342), 8 states have call predecessors, (342), 8 states have return successors, (342), 336 states have call predecessors, (342), 342 states have call successors, (342) [2023-11-12 02:12:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2056 transitions. [2023-11-12 02:12:47,938 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2056 transitions. Word has length 453 [2023-11-12 02:12:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:47,939 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2056 transitions. [2023-11-12 02:12:47,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2056 transitions. [2023-11-12 02:12:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-11-12 02:12:47,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:47,946 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:47,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:48,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:48,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash 617222128, now seen corresponding path program 1 times [2023-11-12 02:12:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:48,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873925066] [2023-11-12 02:12:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:48,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:48,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052747145] [2023-11-12 02:12:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:48,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:48,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:48,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:48,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:12:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:48,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:12:48,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 2688 proven. 177 refuted. 0 times theorem prover too weak. 7075 trivial. 0 not checked. [2023-11-12 02:12:50,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873925066] [2023-11-12 02:12:50,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052747145] [2023-11-12 02:12:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052747145] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:50,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:12:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-12 02:12:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442170905] [2023-11-12 02:12:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:50,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:50,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:50,917 INFO L87 Difference]: Start difference. First operand 1221 states and 2056 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:51,592 INFO L93 Difference]: Finished difference Result 6021 states and 10140 transitions. [2023-11-12 02:12:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2023-11-12 02:12:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:51,633 INFO L225 Difference]: With dead ends: 6021 [2023-11-12 02:12:51,633 INFO L226 Difference]: Without dead ends: 4803 [2023-11-12 02:12:51,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:12:51,642 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 768 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:51,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1770 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:12:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2023-11-12 02:12:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 2433. [2023-11-12 02:12:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1732 states have (on average 1.5681293302540416) internal successors, (2716), 1744 states have internal predecessors, (2716), 684 states have call successors, (684), 16 states have call predecessors, (684), 16 states have return successors, (684), 672 states have call predecessors, (684), 684 states have call successors, (684) [2023-11-12 02:12:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 4084 transitions. [2023-11-12 02:12:52,280 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 4084 transitions. Word has length 453 [2023-11-12 02:12:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 4084 transitions. [2023-11-12 02:12:52,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 4084 transitions. [2023-11-12 02:12:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-11-12 02:12:52,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:52,291 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:52,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:12:52,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:52,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash -412137170, now seen corresponding path program 1 times [2023-11-12 02:12:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878523646] [2023-11-12 02:12:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:52,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788136517] [2023-11-12 02:12:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:52,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:52,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:52,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:12:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:52,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:12:52,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:53,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878523646] [2023-11-12 02:12:53,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788136517] [2023-11-12 02:12:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788136517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459869219] [2023-11-12 02:12:53,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:53,046 INFO L87 Difference]: Start difference. First operand 2433 states and 4084 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:54,212 INFO L93 Difference]: Finished difference Result 7503 states and 12571 transitions. [2023-11-12 02:12:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2023-11-12 02:12:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:54,251 INFO L225 Difference]: With dead ends: 7503 [2023-11-12 02:12:54,251 INFO L226 Difference]: Without dead ends: 5073 [2023-11-12 02:12:54,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:54,261 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1184 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:54,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1390 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:12:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2023-11-12 02:12:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4631. [2023-11-12 02:12:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 3362 states have (on average 1.5710886377156454) internal successors, (5282), 3390 states have internal predecessors, (5282), 1236 states have call successors, (1236), 32 states have call predecessors, (1236), 32 states have return successors, (1236), 1208 states have call predecessors, (1236), 1236 states have call successors, (1236) [2023-11-12 02:12:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 7754 transitions. [2023-11-12 02:12:54,848 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 7754 transitions. Word has length 453 [2023-11-12 02:12:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:54,849 INFO L495 AbstractCegarLoop]: Abstraction has 4631 states and 7754 transitions. [2023-11-12 02:12:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 7754 transitions. [2023-11-12 02:12:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-11-12 02:12:54,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:54,859 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:54,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:12:55,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2144310042, now seen corresponding path program 1 times [2023-11-12 02:12:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202416459] [2023-11-12 02:12:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270963793] [2023-11-12 02:12:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:55,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:55,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:12:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:55,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:12:55,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:12:56,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202416459] [2023-11-12 02:12:56,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:12:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270963793] [2023-11-12 02:12:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270963793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014886127] [2023-11-12 02:12:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:56,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:56,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:56,286 INFO L87 Difference]: Start difference. First operand 4631 states and 7754 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:57,128 INFO L93 Difference]: Finished difference Result 11563 states and 19343 transitions. [2023-11-12 02:12:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 454 [2023-11-12 02:12:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:57,184 INFO L225 Difference]: With dead ends: 11563 [2023-11-12 02:12:57,185 INFO L226 Difference]: Without dead ends: 6935 [2023-11-12 02:12:57,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:57,204 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 372 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:57,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1109 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:12:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2023-11-12 02:12:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6923. [2023-11-12 02:12:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6923 states, 5020 states have (on average 1.5661354581673306) internal successors, (7862), 5062 states have internal predecessors, (7862), 1854 states have call successors, (1854), 48 states have call predecessors, (1854), 48 states have return successors, (1854), 1812 states have call predecessors, (1854), 1854 states have call successors, (1854) [2023-11-12 02:12:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 11570 transitions. [2023-11-12 02:12:58,160 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 11570 transitions. Word has length 454 [2023-11-12 02:12:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:58,162 INFO L495 AbstractCegarLoop]: Abstraction has 6923 states and 11570 transitions. [2023-11-12 02:12:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:12:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 11570 transitions. [2023-11-12 02:12:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-11-12 02:12:58,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:58,175 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:58,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:58,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:58,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:58,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash -309896969, now seen corresponding path program 1 times [2023-11-12 02:12:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:58,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142693641] [2023-11-12 02:12:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:58,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:12:58,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220944256] [2023-11-12 02:12:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:58,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:58,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:12:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:58,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:12:58,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 6200 proven. 240 refuted. 0 times theorem prover too weak. 3500 trivial. 0 not checked. [2023-11-12 02:13:01,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 174 proven. 243 refuted. 0 times theorem prover too weak. 9523 trivial. 0 not checked. [2023-11-12 02:13:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142693641] [2023-11-12 02:13:03,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:13:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220944256] [2023-11-12 02:13:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220944256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:03,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:13:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-12 02:13:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360874141] [2023-11-12 02:13:03,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:13:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:13:03,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:13:03,291 INFO L87 Difference]: Start difference. First operand 6923 states and 11570 transitions. Second operand has 16 states, 15 states have (on average 10.2) internal successors, (153), 16 states have internal predecessors, (153), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) [2023-11-12 02:13:06,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:06,088 INFO L93 Difference]: Finished difference Result 14515 states and 23713 transitions. [2023-11-12 02:13:06,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:13:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.2) internal successors, (153), 16 states have internal predecessors, (153), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) Word has length 454 [2023-11-12 02:13:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:06,137 INFO L225 Difference]: With dead ends: 14515 [2023-11-12 02:13:06,137 INFO L226 Difference]: Without dead ends: 7595 [2023-11-12 02:13:06,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:13:06,158 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 776 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 823 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:13:06,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7595 states. [2023-11-12 02:13:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7595 to 5831. [2023-11-12 02:13:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4444 states have (on average 1.576057605760576) internal successors, (7004), 4474 states have internal predecessors, (7004), 1302 states have call successors, (1302), 84 states have call predecessors, (1302), 84 states have return successors, (1302), 1272 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-11-12 02:13:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 9608 transitions. [2023-11-12 02:13:07,141 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 9608 transitions. Word has length 454 [2023-11-12 02:13:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:07,143 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 9608 transitions. [2023-11-12 02:13:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.2) internal successors, (153), 16 states have internal predecessors, (153), 7 states have call successors, (120), 4 states have call predecessors, (120), 8 states have return successors, (120), 7 states have call predecessors, (120), 7 states have call successors, (120) [2023-11-12 02:13:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 9608 transitions. [2023-11-12 02:13:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-11-12 02:13:07,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:07,157 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:07,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:07,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:07,365 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:07,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1076888441, now seen corresponding path program 1 times [2023-11-12 02:13:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577331739] [2023-11-12 02:13:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:07,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:13:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777840555] [2023-11-12 02:13:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:07,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:07,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:07,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:13:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:07,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:13:07,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:13:07,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577331739] [2023-11-12 02:13:07,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:13:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777840555] [2023-11-12 02:13:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777840555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:07,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:07,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:13:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282379923] [2023-11-12 02:13:07,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:07,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:07,926 INFO L87 Difference]: Start difference. First operand 5831 states and 9608 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:08,515 INFO L93 Difference]: Finished difference Result 11803 states and 19477 transitions. [2023-11-12 02:13:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:08,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 454 [2023-11-12 02:13:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:08,539 INFO L225 Difference]: With dead ends: 11803 [2023-11-12 02:13:08,539 INFO L226 Difference]: Without dead ends: 5975 [2023-11-12 02:13:08,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:13:08,553 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 3 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1051 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 02:13:08,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1051 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:13:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2023-11-12 02:13:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5951. [2023-11-12 02:13:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5951 states, 4564 states have (on average 1.5661700262927256) internal successors, (7148), 4594 states have internal predecessors, (7148), 1302 states have call successors, (1302), 84 states have call predecessors, (1302), 84 states have return successors, (1302), 1272 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-11-12 02:13:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 9752 transitions. [2023-11-12 02:13:09,320 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 9752 transitions. Word has length 454 [2023-11-12 02:13:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:09,321 INFO L495 AbstractCegarLoop]: Abstraction has 5951 states and 9752 transitions. [2023-11-12 02:13:09,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 9752 transitions. [2023-11-12 02:13:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-11-12 02:13:09,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:09,332 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:09,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:09,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:13:09,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:09,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1092932491, now seen corresponding path program 1 times [2023-11-12 02:13:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821620105] [2023-11-12 02:13:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:09,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:09,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:13:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472202924] [2023-11-12 02:13:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:09,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:09,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:13:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:10,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:13:10,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:13:10,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821620105] [2023-11-12 02:13:10,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:13:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472202924] [2023-11-12 02:13:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472202924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542166248] [2023-11-12 02:13:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:10,638 INFO L87 Difference]: Start difference. First operand 5951 states and 9752 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:11,466 INFO L93 Difference]: Finished difference Result 11899 states and 19501 transitions. [2023-11-12 02:13:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:13:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 455 [2023-11-12 02:13:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:11,488 INFO L225 Difference]: With dead ends: 11899 [2023-11-12 02:13:11,488 INFO L226 Difference]: Without dead ends: 5951 [2023-11-12 02:13:11,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:11,502 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 127 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:11,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 535 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:13:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5951 states. [2023-11-12 02:13:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5951 to 5951. [2023-11-12 02:13:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5951 states, 4564 states have (on average 1.5582822085889572) internal successors, (7112), 4594 states have internal predecessors, (7112), 1302 states have call successors, (1302), 84 states have call predecessors, (1302), 84 states have return successors, (1302), 1272 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-11-12 02:13:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 9716 transitions. [2023-11-12 02:13:12,449 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 9716 transitions. Word has length 455 [2023-11-12 02:13:12,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:12,450 INFO L495 AbstractCegarLoop]: Abstraction has 5951 states and 9716 transitions. [2023-11-12 02:13:12,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 9716 transitions. [2023-11-12 02:13:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-11-12 02:13:12,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:12,463 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:12,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:12,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:12,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:12,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1922171127, now seen corresponding path program 1 times [2023-11-12 02:13:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:12,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552735082] [2023-11-12 02:13:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:12,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:13:12,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4966647] [2023-11-12 02:13:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:12,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:12,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:12,766 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:12,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:13:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:13,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:13:13,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:13:14,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552735082] [2023-11-12 02:13:14,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:13:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4966647] [2023-11-12 02:13:14,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4966647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:14,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747518937] [2023-11-12 02:13:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:14,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:14,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:14,060 INFO L87 Difference]: Start difference. First operand 5951 states and 9716 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:15,600 INFO L93 Difference]: Finished difference Result 17811 states and 29070 transitions. [2023-11-12 02:13:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:13:15,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 455 [2023-11-12 02:13:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:15,640 INFO L225 Difference]: With dead ends: 17811 [2023-11-12 02:13:15,640 INFO L226 Difference]: Without dead ends: 11863 [2023-11-12 02:13:15,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:13:15,655 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 337 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:15,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1020 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:13:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11863 states. [2023-11-12 02:13:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11863 to 6779. [2023-11-12 02:13:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 5392 states have (on average 1.545994065281899) internal successors, (8336), 5422 states have internal predecessors, (8336), 1302 states have call successors, (1302), 84 states have call predecessors, (1302), 84 states have return successors, (1302), 1272 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-11-12 02:13:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 10940 transitions. [2023-11-12 02:13:16,935 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 10940 transitions. Word has length 455 [2023-11-12 02:13:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:16,936 INFO L495 AbstractCegarLoop]: Abstraction has 6779 states and 10940 transitions. [2023-11-12 02:13:16,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 10940 transitions. [2023-11-12 02:13:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-11-12 02:13:16,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:16,946 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:16,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-12 02:13:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:17,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:17,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash 333823225, now seen corresponding path program 1 times [2023-11-12 02:13:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739167813] [2023-11-12 02:13:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:17,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:13:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765178593] [2023-11-12 02:13:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:17,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:17,220 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:17,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:13:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:17,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:13:17,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2023-11-12 02:13:17,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739167813] [2023-11-12 02:13:17,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:13:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765178593] [2023-11-12 02:13:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765178593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:17,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:13:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417187228] [2023-11-12 02:13:17,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:17,670 INFO L87 Difference]: Start difference. First operand 6779 states and 10940 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:19,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:19,329 INFO L93 Difference]: Finished difference Result 18639 states and 30150 transitions. [2023-11-12 02:13:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 455 [2023-11-12 02:13:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:19,374 INFO L225 Difference]: With dead ends: 18639 [2023-11-12 02:13:19,374 INFO L226 Difference]: Without dead ends: 11863 [2023-11-12 02:13:19,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:13:19,392 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 363 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:19,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1029 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:13:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11863 states. [2023-11-12 02:13:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11863 to 6779. [2023-11-12 02:13:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 5392 states have (on average 1.5393175074183976) internal successors, (8300), 5422 states have internal predecessors, (8300), 1302 states have call successors, (1302), 84 states have call predecessors, (1302), 84 states have return successors, (1302), 1272 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-11-12 02:13:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 10904 transitions. [2023-11-12 02:13:20,834 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 10904 transitions. Word has length 455 [2023-11-12 02:13:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:20,835 INFO L495 AbstractCegarLoop]: Abstraction has 6779 states and 10904 transitions. [2023-11-12 02:13:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2023-11-12 02:13:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 10904 transitions. [2023-11-12 02:13:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-12 02:13:20,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:20,847 INFO L195 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:20,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:21,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:13:21,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:21,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1676137118, now seen corresponding path program 1 times [2023-11-12 02:13:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:21,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074049063] [2023-11-12 02:13:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:21,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:13:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661068515] [2023-11-12 02:13:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:21,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d14937a-eb75-4574-be8c-5a6e62cdd0e2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:13:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:23,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-12 02:13:23,488 INFO L285 TraceCheckSpWp]: Computing forward predicates...