./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32cc6da12107835fbba84157088ec5af8a04f69b7f7a6f7a2a92488ba931be42 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:17:32,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:17:32,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:17:32,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:17:32,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:17:32,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:17:32,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:17:32,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:17:32,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:17:32,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:17:32,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:17:32,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:17:32,543 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:17:32,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:17:32,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:17:32,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:17:32,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:17:32,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:17:32,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:17:32,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:17:32,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:17:32,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:17:32,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:17:32,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:17:32,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:17:32,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:17:32,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:17:32,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:17:32,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:32,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:17:32,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:17:32,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:17:32,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:17:32,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:17:32,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:17:32,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:17:32,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:17:32,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:17:32,556 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:17:32,556 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_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32cc6da12107835fbba84157088ec5af8a04f69b7f7a6f7a2a92488ba931be42 [2023-11-06 22:17:32,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:17:32,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:17:32,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:17:32,912 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:17:32,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:17:32,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-06 22:17:36,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:17:36,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:17:36,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-06 22:17:36,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/data/0ea6d3d87/1466bd7ddc0942ccac01322b4a17cdcd/FLAG75733f6d7 [2023-11-06 22:17:36,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/data/0ea6d3d87/1466bd7ddc0942ccac01322b4a17cdcd [2023-11-06 22:17:36,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:17:36,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:17:36,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:36,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:17:36,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:17:36,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383fd223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:36, skipping insertion in model container [2023-11-06 22:17:36,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:17:36" (1/1) ... [2023-11-06 22:17:36,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:17:36,704 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_c42f6c3f-409a-45db-9b0e-faf7cac65e03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-11-06 22:17:36,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:36,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:17:36,980 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_c42f6c3f-409a-45db-9b0e-faf7cac65e03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-79.i[916,929] [2023-11-06 22:17:37,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:17:37,235 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:17:37,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37 WrapperNode [2023-11-06 22:17:37,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:17:37,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:37,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:17:37,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:17:37,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,378 INFO L138 Inliner]: procedures = 26, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 819 [2023-11-06 22:17:37,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:17:37,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:17:37,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:17:37,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:17:37,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:17:37,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:17:37,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:17:37,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:17:37,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (1/1) ... [2023-11-06 22:17:37,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:17:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:37,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:17:37,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:17:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:17:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:17:37,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:17:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:17:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:17:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:17:37,817 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:17:37,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:17:39,206 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:17:39,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:17:39,226 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:17:39,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:39 BoogieIcfgContainer [2023-11-06 22:17:39,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:17:39,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:17:39,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:17:39,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:17:39,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:17:36" (1/3) ... [2023-11-06 22:17:39,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3230770c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:39, skipping insertion in model container [2023-11-06 22:17:39,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:17:37" (2/3) ... [2023-11-06 22:17:39,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3230770c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:17:39, skipping insertion in model container [2023-11-06 22:17:39,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:17:39" (3/3) ... [2023-11-06 22:17:39,244 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-79.i [2023-11-06 22:17:39,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:17:39,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:17:39,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:17:39,358 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@621ed4d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:17:39,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:17:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 210 states have (on average 1.5523809523809524) internal successors, (326), 211 states have internal predecessors, (326), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-06 22:17:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-06 22:17:39,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:39,428 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:39,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:39,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1842846856, now seen corresponding path program 1 times [2023-11-06 22:17:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:39,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849151137] [2023-11-06 22:17:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849151137] [2023-11-06 22:17:40,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:17:40,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960066962] [2023-11-06 22:17:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:40,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:40,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:40,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:40,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:17:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:40,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:17:40,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 29282 trivial. 0 not checked. [2023-11-06 22:17:40,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960066962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:40,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:17:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884717545] [2023-11-06 22:17:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:40,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:17:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:17:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:40,915 INFO L87 Difference]: Start difference. First operand has 335 states, 210 states have (on average 1.5523809523809524) internal successors, (326), 211 states have internal predecessors, (326), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-06 22:17:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:40,998 INFO L93 Difference]: Finished difference Result 663 states and 1256 transitions. [2023-11-06 22:17:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:17:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) Word has length 771 [2023-11-06 22:17:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:41,014 INFO L225 Difference]: With dead ends: 663 [2023-11-06 22:17:41,014 INFO L226 Difference]: Without dead ends: 331 [2023-11-06 22:17:41,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:17:41,026 INFO L413 NwaCegarLoop]: 560 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, 560 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:41,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-06 22:17:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-11-06 22:17:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 207 states have (on average 1.5265700483091786) internal successors, (316), 207 states have internal predecessors, (316), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-06 22:17:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 560 transitions. [2023-11-06 22:17:41,135 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 560 transitions. Word has length 771 [2023-11-06 22:17:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:41,136 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 560 transitions. [2023-11-06 22:17:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-06 22:17:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 560 transitions. [2023-11-06 22:17:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-06 22:17:41,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:41,166 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:41,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:41,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:41,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1332505231, now seen corresponding path program 1 times [2023-11-06 22:17:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260177803] [2023-11-06 22:17:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:41,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:41,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438154375] [2023-11-06 22:17:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:41,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:41,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:17:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:42,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:42,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:42,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:42,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260177803] [2023-11-06 22:17:42,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438154375] [2023-11-06 22:17:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438154375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:42,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:42,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:42,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742635783] [2023-11-06 22:17:42,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:42,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:17:42,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:17:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:17:42,499 INFO L87 Difference]: Start difference. First operand 331 states and 560 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:42,682 INFO L93 Difference]: Finished difference Result 856 states and 1457 transitions. [2023-11-06 22:17:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 772 [2023-11-06 22:17:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:42,702 INFO L225 Difference]: With dead ends: 856 [2023-11-06 22:17:42,702 INFO L226 Difference]: Without dead ends: 528 [2023-11-06 22:17:42,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:42,706 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 301 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:42,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 2064 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-06 22:17:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 525. [2023-11-06 22:17:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 355 states have (on average 1.5830985915492957) internal successors, (562), 356 states have internal predecessors, (562), 167 states have call successors, (167), 2 states have call predecessors, (167), 2 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2023-11-06 22:17:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 896 transitions. [2023-11-06 22:17:42,868 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 896 transitions. Word has length 772 [2023-11-06 22:17:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:42,873 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 896 transitions. [2023-11-06 22:17:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 896 transitions. [2023-11-06 22:17:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-06 22:17:42,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:42,890 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:42,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:43,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:43,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:43,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1395704115, now seen corresponding path program 1 times [2023-11-06 22:17:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639923483] [2023-11-06 22:17:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:43,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088421066] [2023-11-06 22:17:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:43,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:43,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:43,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:17:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:43,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:17:43,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:44,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639923483] [2023-11-06 22:17:44,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088421066] [2023-11-06 22:17:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088421066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:44,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:44,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:44,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073536990] [2023-11-06 22:17:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:44,124 INFO L87 Difference]: Start difference. First operand 525 states and 896 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:44,224 INFO L93 Difference]: Finished difference Result 1375 states and 2343 transitions. [2023-11-06 22:17:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:44,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 772 [2023-11-06 22:17:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:44,238 INFO L225 Difference]: With dead ends: 1375 [2023-11-06 22:17:44,239 INFO L226 Difference]: Without dead ends: 853 [2023-11-06 22:17:44,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:44,244 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 266 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:44,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1100 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-06 22:17:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 849. [2023-11-06 22:17:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 595 states have (on average 1.591596638655462) internal successors, (947), 598 states have internal predecessors, (947), 249 states have call successors, (249), 4 states have call predecessors, (249), 4 states have return successors, (249), 246 states have call predecessors, (249), 249 states have call successors, (249) [2023-11-06 22:17:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1445 transitions. [2023-11-06 22:17:44,380 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1445 transitions. Word has length 772 [2023-11-06 22:17:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:44,382 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1445 transitions. [2023-11-06 22:17:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1445 transitions. [2023-11-06 22:17:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-06 22:17:44,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:44,394 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:44,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:44,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:17:44,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:44,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash -772646101, now seen corresponding path program 1 times [2023-11-06 22:17:44,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:44,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102522784] [2023-11-06 22:17:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:44,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:44,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:44,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272941226] [2023-11-06 22:17:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:44,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:44,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:17:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:45,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:17:45,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:45,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102522784] [2023-11-06 22:17:45,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272941226] [2023-11-06 22:17:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272941226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:45,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:17:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397089670] [2023-11-06 22:17:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:17:45,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:45,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:17:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:45,482 INFO L87 Difference]: Start difference. First operand 849 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:45,573 INFO L93 Difference]: Finished difference Result 1719 states and 2911 transitions. [2023-11-06 22:17:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:17:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 773 [2023-11-06 22:17:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:45,584 INFO L225 Difference]: With dead ends: 1719 [2023-11-06 22:17:45,584 INFO L226 Difference]: Without dead ends: 873 [2023-11-06 22:17:45,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:17:45,589 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 33 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1100 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:17:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-11-06 22:17:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 872. [2023-11-06 22:17:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 610 states have (on average 1.5704918032786885) internal successors, (958), 614 states have internal predecessors, (958), 253 states have call successors, (253), 8 states have call predecessors, (253), 8 states have return successors, (253), 249 states have call predecessors, (253), 253 states have call successors, (253) [2023-11-06 22:17:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1464 transitions. [2023-11-06 22:17:45,698 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1464 transitions. Word has length 773 [2023-11-06 22:17:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:45,700 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1464 transitions. [2023-11-06 22:17:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1464 transitions. [2023-11-06 22:17:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-06 22:17:45,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:45,710 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:45,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:17:45,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:45,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:45,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1560739175, now seen corresponding path program 1 times [2023-11-06 22:17:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:45,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009379001] [2023-11-06 22:17:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:46,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207120667] [2023-11-06 22:17:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:46,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:46,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:46,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:46,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:17:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:46,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:17:46,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13891 proven. 228 refuted. 0 times theorem prover too weak. 15405 trivial. 0 not checked. [2023-11-06 22:17:47,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:17:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 135 proven. 228 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:17:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009379001] [2023-11-06 22:17:48,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207120667] [2023-11-06 22:17:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207120667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:17:48,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:17:48,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:17:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135968759] [2023-11-06 22:17:48,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:17:48,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:17:48,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:17:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:48,399 INFO L87 Difference]: Start difference. First operand 872 states and 1464 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) [2023-11-06 22:17:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:49,177 INFO L93 Difference]: Finished difference Result 1388 states and 2313 transitions. [2023-11-06 22:17:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:17:49,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) Word has length 774 [2023-11-06 22:17:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:49,184 INFO L225 Difference]: With dead ends: 1388 [2023-11-06 22:17:49,184 INFO L226 Difference]: Without dead ends: 526 [2023-11-06 22:17:49,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:17:49,188 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 310 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:49,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1039 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:17:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-06 22:17:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 516. [2023-11-06 22:17:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 342 states have (on average 1.5146198830409356) internal successors, (518), 344 states have internal predecessors, (518), 167 states have call successors, (167), 6 states have call predecessors, (167), 6 states have return successors, (167), 165 states have call predecessors, (167), 167 states have call successors, (167) [2023-11-06 22:17:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 852 transitions. [2023-11-06 22:17:49,256 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 852 transitions. Word has length 774 [2023-11-06 22:17:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:49,258 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 852 transitions. [2023-11-06 22:17:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (198), 2 states have call predecessors, (198), 4 states have return successors, (199), 2 states have call predecessors, (199), 2 states have call successors, (199) [2023-11-06 22:17:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 852 transitions. [2023-11-06 22:17:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-06 22:17:49,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:49,268 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:49,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:17:49,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:49,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:49,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1739099214, now seen corresponding path program 1 times [2023-11-06 22:17:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842907484] [2023-11-06 22:17:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:49,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172252204] [2023-11-06 22:17:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:49,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:49,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:49,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:17:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:50,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:17:50,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:50,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842907484] [2023-11-06 22:17:50,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:50,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172252204] [2023-11-06 22:17:50,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172252204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:50,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:17:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209077282] [2023-11-06 22:17:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:17:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:17:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:17:50,490 INFO L87 Difference]: Start difference. First operand 516 states and 852 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:51,938 INFO L93 Difference]: Finished difference Result 2526 states and 4172 transitions. [2023-11-06 22:17:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:17:51,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 777 [2023-11-06 22:17:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:51,958 INFO L225 Difference]: With dead ends: 2526 [2023-11-06 22:17:51,959 INFO L226 Difference]: Without dead ends: 2020 [2023-11-06 22:17:51,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:17:51,966 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 1495 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:51,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 4034 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:17:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-11-06 22:17:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1284. [2023-11-06 22:17:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 898 states have (on average 1.5657015590200445) internal successors, (1406), 902 states have internal predecessors, (1406), 371 states have call successors, (371), 14 states have call predecessors, (371), 14 states have return successors, (371), 367 states have call predecessors, (371), 371 states have call successors, (371) [2023-11-06 22:17:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 2148 transitions. [2023-11-06 22:17:52,290 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 2148 transitions. Word has length 777 [2023-11-06 22:17:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 2148 transitions. [2023-11-06 22:17:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 2148 transitions. [2023-11-06 22:17:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-06 22:17:52,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:52,302 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:52,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:52,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:52,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash -338237684, now seen corresponding path program 1 times [2023-11-06 22:17:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566968376] [2023-11-06 22:17:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:52,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30378846] [2023-11-06 22:17:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:52,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:52,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:52,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:52,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:17:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:53,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:17:53,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:54,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:54,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566968376] [2023-11-06 22:17:54,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30378846] [2023-11-06 22:17:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30378846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:54,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:17:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506010064] [2023-11-06 22:17:54,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:54,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:17:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:17:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:54,810 INFO L87 Difference]: Start difference. First operand 1284 states and 2148 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:56,404 INFO L93 Difference]: Finished difference Result 5555 states and 9327 transitions. [2023-11-06 22:17:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:17:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 777 [2023-11-06 22:17:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:56,443 INFO L225 Difference]: With dead ends: 5555 [2023-11-06 22:17:56,444 INFO L226 Difference]: Without dead ends: 4281 [2023-11-06 22:17:56,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:17:56,450 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1391 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:56,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1992 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:17:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2023-11-06 22:17:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3810. [2023-11-06 22:17:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3810 states, 2748 states have (on average 1.5931586608442503) internal successors, (4378), 2756 states have internal predecessors, (4378), 1023 states have call successors, (1023), 38 states have call predecessors, (1023), 38 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-11-06 22:17:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 6424 transitions. [2023-11-06 22:17:57,227 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 6424 transitions. Word has length 777 [2023-11-06 22:17:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:17:57,229 INFO L495 AbstractCegarLoop]: Abstraction has 3810 states and 6424 transitions. [2023-11-06 22:17:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:17:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 6424 transitions. [2023-11-06 22:17:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-11-06 22:17:57,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:17:57,240 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:17:57,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:17:57,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:57,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:17:57,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:17:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash 650565521, now seen corresponding path program 1 times [2023-11-06 22:17:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:17:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532361819] [2023-11-06 22:17:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:17:57,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:17:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407203804] [2023-11-06 22:17:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:17:57,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:17:57,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:17:57,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:17:57,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:17:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:17:58,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:17:58,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:17:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:17:59,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:17:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:17:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532361819] [2023-11-06 22:17:59,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:17:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407203804] [2023-11-06 22:17:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407203804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:17:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:17:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:17:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529045437] [2023-11-06 22:17:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:17:59,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:17:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:17:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:17:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:17:59,681 INFO L87 Difference]: Start difference. First operand 3810 states and 6424 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:02,063 INFO L93 Difference]: Finished difference Result 7916 states and 13280 transitions. [2023-11-06 22:18:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:18:02,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 778 [2023-11-06 22:18:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:02,096 INFO L225 Difference]: With dead ends: 7916 [2023-11-06 22:18:02,097 INFO L226 Difference]: Without dead ends: 4116 [2023-11-06 22:18:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:02,113 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1544 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2984 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:18:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2023-11-06 22:18:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3810. [2023-11-06 22:18:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3810 states, 2748 states have (on average 1.589155749636099) internal successors, (4367), 2756 states have internal predecessors, (4367), 1023 states have call successors, (1023), 38 states have call predecessors, (1023), 38 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-11-06 22:18:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 6413 transitions. [2023-11-06 22:18:02,804 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 6413 transitions. Word has length 778 [2023-11-06 22:18:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:02,805 INFO L495 AbstractCegarLoop]: Abstraction has 3810 states and 6413 transitions. [2023-11-06 22:18:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 6413 transitions. [2023-11-06 22:18:02,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-06 22:18:02,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:02,818 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:02,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:03,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:03,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash -20731130, now seen corresponding path program 1 times [2023-11-06 22:18:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:03,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074189581] [2023-11-06 22:18:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:03,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155698946] [2023-11-06 22:18:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:03,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:03,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:03,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:03,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:18:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:03,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:03,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 7401 proven. 51 refuted. 0 times theorem prover too weak. 22072 trivial. 0 not checked. [2023-11-06 22:18:04,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 312 proven. 51 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:18:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074189581] [2023-11-06 22:18:04,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155698946] [2023-11-06 22:18:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155698946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:04,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:18:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117257815] [2023-11-06 22:18:04,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:04,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:04,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:04,693 INFO L87 Difference]: Start difference. First operand 3810 states and 6413 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-11-06 22:18:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:05,969 INFO L93 Difference]: Finished difference Result 7710 states and 12906 transitions. [2023-11-06 22:18:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) Word has length 779 [2023-11-06 22:18:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:06,001 INFO L225 Difference]: With dead ends: 7710 [2023-11-06 22:18:06,002 INFO L226 Difference]: Without dead ends: 3910 [2023-11-06 22:18:06,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1550 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:18:06,014 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 913 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:06,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1038 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:18:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2023-11-06 22:18:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3834. [2023-11-06 22:18:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3834 states, 2766 states have (on average 1.5751988430947217) internal successors, (4357), 2774 states have internal predecessors, (4357), 1023 states have call successors, (1023), 44 states have call predecessors, (1023), 44 states have return successors, (1023), 1015 states have call predecessors, (1023), 1023 states have call successors, (1023) [2023-11-06 22:18:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 6403 transitions. [2023-11-06 22:18:06,655 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 6403 transitions. Word has length 779 [2023-11-06 22:18:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:06,657 INFO L495 AbstractCegarLoop]: Abstraction has 3834 states and 6403 transitions. [2023-11-06 22:18:06,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (139), 2 states have call predecessors, (139), 4 states have return successors, (140), 2 states have call predecessors, (140), 2 states have call successors, (140) [2023-11-06 22:18:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 6403 transitions. [2023-11-06 22:18:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-06 22:18:06,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:06,673 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:06,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:06,884 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:06,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -75124028, now seen corresponding path program 1 times [2023-11-06 22:18:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4486024] [2023-11-06 22:18:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:07,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789697642] [2023-11-06 22:18:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:07,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:07,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:07,025 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:07,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:18:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:07,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:18:07,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8077 proven. 57 refuted. 0 times theorem prover too weak. 21390 trivial. 0 not checked. [2023-11-06 22:18:08,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 306 proven. 57 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:18:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4486024] [2023-11-06 22:18:08,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789697642] [2023-11-06 22:18:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789697642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:08,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:18:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335431012] [2023-11-06 22:18:08,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:18:08,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:18:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:18:08,692 INFO L87 Difference]: Start difference. First operand 3834 states and 6403 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-11-06 22:18:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:09,870 INFO L93 Difference]: Finished difference Result 5885 states and 9777 transitions. [2023-11-06 22:18:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 779 [2023-11-06 22:18:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:09,888 INFO L225 Difference]: With dead ends: 5885 [2023-11-06 22:18:09,889 INFO L226 Difference]: Without dead ends: 2061 [2023-11-06 22:18:09,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1550 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:18:09,903 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 620 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:09,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1021 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:18:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-11-06 22:18:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1842. [2023-11-06 22:18:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1281 states have (on average 1.501951600312256) internal successors, (1924), 1286 states have internal predecessors, (1924), 534 states have call successors, (534), 26 states have call predecessors, (534), 26 states have return successors, (534), 529 states have call predecessors, (534), 534 states have call successors, (534) [2023-11-06 22:18:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2992 transitions. [2023-11-06 22:18:10,251 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2992 transitions. Word has length 779 [2023-11-06 22:18:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:10,253 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2992 transitions. [2023-11-06 22:18:10,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-11-06 22:18:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2992 transitions. [2023-11-06 22:18:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-06 22:18:10,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:10,264 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:10,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:10,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:18:10,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:10,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1813434362, now seen corresponding path program 1 times [2023-11-06 22:18:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:10,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910509450] [2023-11-06 22:18:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:10,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:10,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853717558] [2023-11-06 22:18:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:10,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:10,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:10,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:10,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:18:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:11,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:18:11,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:18:14,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:14,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:14,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910509450] [2023-11-06 22:18:14,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:14,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853717558] [2023-11-06 22:18:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853717558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:14,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477151879] [2023-11-06 22:18:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:18:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:18:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:18:14,312 INFO L87 Difference]: Start difference. First operand 1842 states and 2992 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:15,227 INFO L93 Difference]: Finished difference Result 5010 states and 8134 transitions. [2023-11-06 22:18:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:18:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 780 [2023-11-06 22:18:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:15,279 INFO L225 Difference]: With dead ends: 5010 [2023-11-06 22:18:15,279 INFO L226 Difference]: Without dead ends: 3178 [2023-11-06 22:18:15,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:18:15,288 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 463 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:15,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1625 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:18:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2023-11-06 22:18:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2971. [2023-11-06 22:18:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2068 states have (on average 1.489845261121857) internal successors, (3081), 2075 states have internal predecessors, (3081), 860 states have call successors, (860), 42 states have call predecessors, (860), 42 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-11-06 22:18:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4801 transitions. [2023-11-06 22:18:15,919 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4801 transitions. Word has length 780 [2023-11-06 22:18:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:15,921 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 4801 transitions. [2023-11-06 22:18:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4801 transitions. [2023-11-06 22:18:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-06 22:18:15,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:15,937 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:15,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:18:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:18:16,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:16,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1190576900, now seen corresponding path program 1 times [2023-11-06 22:18:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776890378] [2023-11-06 22:18:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:16,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93343628] [2023-11-06 22:18:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:16,281 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:16,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:18:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:17,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:18:17,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 6141 proven. 321 refuted. 0 times theorem prover too weak. 23062 trivial. 0 not checked. [2023-11-06 22:18:19,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 42 proven. 321 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:18:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776890378] [2023-11-06 22:18:21,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93343628] [2023-11-06 22:18:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93343628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:21,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:21,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-06 22:18:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389488466] [2023-11-06 22:18:21,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:21,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:18:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:18:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:18:21,532 INFO L87 Difference]: Start difference. First operand 2971 states and 4801 transitions. Second operand has 14 states, 14 states have (on average 24.857142857142858) internal successors, (348), 14 states have internal predecessors, (348), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-11-06 22:18:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:23,096 INFO L93 Difference]: Finished difference Result 3629 states and 5770 transitions. [2023-11-06 22:18:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:18:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.857142857142858) internal successors, (348), 14 states have internal predecessors, (348), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) Word has length 780 [2023-11-06 22:18:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:23,113 INFO L225 Difference]: With dead ends: 3629 [2023-11-06 22:18:23,113 INFO L226 Difference]: Without dead ends: 3111 [2023-11-06 22:18:23,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1546 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:18:23,119 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 948 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:23,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1288 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:18:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2023-11-06 22:18:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3015. [2023-11-06 22:18:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2101 states have (on average 1.4792955735364113) internal successors, (3108), 2108 states have internal predecessors, (3108), 860 states have call successors, (860), 53 states have call predecessors, (860), 53 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-11-06 22:18:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4828 transitions. [2023-11-06 22:18:23,649 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4828 transitions. Word has length 780 [2023-11-06 22:18:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:23,690 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 4828 transitions. [2023-11-06 22:18:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.857142857142858) internal successors, (348), 14 states have internal predecessors, (348), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-11-06 22:18:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4828 transitions. [2023-11-06 22:18:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-06 22:18:23,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:23,702 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:23,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:18:23,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:23,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash -69676881, now seen corresponding path program 1 times [2023-11-06 22:18:23,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292233923] [2023-11-06 22:18:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:23,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:24,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796698510] [2023-11-06 22:18:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:24,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:24,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:24,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:24,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:18:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:24,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:18:24,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:18:24,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:18:24,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:24,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292233923] [2023-11-06 22:18:24,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:24,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796698510] [2023-11-06 22:18:24,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796698510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:24,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599895097] [2023-11-06 22:18:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:24,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:18:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:24,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:24,866 INFO L87 Difference]: Start difference. First operand 3015 states and 4828 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:25,272 INFO L93 Difference]: Finished difference Result 6020 states and 9642 transitions. [2023-11-06 22:18:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 780 [2023-11-06 22:18:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:25,290 INFO L225 Difference]: With dead ends: 6020 [2023-11-06 22:18:25,291 INFO L226 Difference]: Without dead ends: 3015 [2023-11-06 22:18:25,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:25,302 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 15 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1074 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 [2023-11-06 22:18:25,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1074 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:18:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2023-11-06 22:18:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3015. [2023-11-06 22:18:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2101 states have (on average 1.473108043788672) internal successors, (3095), 2108 states have internal predecessors, (3095), 860 states have call successors, (860), 53 states have call predecessors, (860), 53 states have return successors, (860), 853 states have call predecessors, (860), 860 states have call successors, (860) [2023-11-06 22:18:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4815 transitions. [2023-11-06 22:18:26,059 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4815 transitions. Word has length 780 [2023-11-06 22:18:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:26,062 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 4815 transitions. [2023-11-06 22:18:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:18:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4815 transitions. [2023-11-06 22:18:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-06 22:18:26,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:26,075 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:26,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:18:26,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:26,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -656482895, now seen corresponding path program 1 times [2023-11-06 22:18:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620807624] [2023-11-06 22:18:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:26,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113466400] [2023-11-06 22:18:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:26,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:26,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:26,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:26,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:18:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:27,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:18:27,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 8721 proven. 63 refuted. 0 times theorem prover too weak. 20740 trivial. 0 not checked. [2023-11-06 22:18:29,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 300 proven. 63 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:18:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620807624] [2023-11-06 22:18:29,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113466400] [2023-11-06 22:18:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113466400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:29,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-06 22:18:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503787691] [2023-11-06 22:18:29,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:30,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:18:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:18:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:18:30,003 INFO L87 Difference]: Start difference. First operand 3015 states and 4815 transitions. Second operand has 18 states, 18 states have (on average 18.0) internal successors, (324), 18 states have internal predecessors, (324), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-11-06 22:18:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:40,981 INFO L93 Difference]: Finished difference Result 16575 states and 26109 transitions. [2023-11-06 22:18:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-06 22:18:40,982 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.0) internal successors, (324), 18 states have internal predecessors, (324), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) Word has length 780 [2023-11-06 22:18:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:41,039 INFO L225 Difference]: With dead ends: 16575 [2023-11-06 22:18:41,039 INFO L226 Difference]: Without dead ends: 13570 [2023-11-06 22:18:41,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1604 GetRequests, 1549 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=792, Invalid=2400, Unknown=0, NotChecked=0, Total=3192 [2023-11-06 22:18:41,056 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 5852 mSDsluCounter, 5671 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 3055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5955 SdHoareTripleChecker+Valid, 6911 SdHoareTripleChecker+Invalid, 8517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3055 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:41,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5955 Valid, 6911 Invalid, 8517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3055 Valid, 5462 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-06 22:18:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13570 states. [2023-11-06 22:18:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13570 to 8497. [2023-11-06 22:18:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 5970 states have (on average 1.4775544388609716) internal successors, (8821), 5984 states have internal predecessors, (8821), 2367 states have call successors, (2367), 159 states have call predecessors, (2367), 159 states have return successors, (2367), 2353 states have call predecessors, (2367), 2367 states have call successors, (2367) [2023-11-06 22:18:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 13555 transitions. [2023-11-06 22:18:42,890 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 13555 transitions. Word has length 780 [2023-11-06 22:18:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:42,892 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 13555 transitions. [2023-11-06 22:18:42,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.0) internal successors, (324), 18 states have internal predecessors, (324), 4 states have call successors, (244), 3 states have call predecessors, (244), 5 states have return successors, (244), 4 states have call predecessors, (244), 4 states have call successors, (244) [2023-11-06 22:18:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 13555 transitions. [2023-11-06 22:18:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-06 22:18:42,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:42,905 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:42,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:18:43,116 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:43,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash -212582221, now seen corresponding path program 1 times [2023-11-06 22:18:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136474204] [2023-11-06 22:18:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:43,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:43,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112641646] [2023-11-06 22:18:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:43,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:43,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:43,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:43,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:18:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:44,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:18:44,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 18141 proven. 441 refuted. 0 times theorem prover too weak. 10942 trivial. 0 not checked. [2023-11-06 22:18:46,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:18:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 630 proven. 450 refuted. 0 times theorem prover too weak. 28444 trivial. 0 not checked. [2023-11-06 22:18:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136474204] [2023-11-06 22:18:47,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:18:47,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112641646] [2023-11-06 22:18:47,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112641646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:18:47,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:18:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-06 22:18:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424435054] [2023-11-06 22:18:47,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:18:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:18:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:18:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:18:47,158 INFO L87 Difference]: Start difference. First operand 8497 states and 13555 transitions. Second operand has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2023-11-06 22:18:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:49,563 INFO L93 Difference]: Finished difference Result 17542 states and 27609 transitions. [2023-11-06 22:18:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:18:49,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) Word has length 780 [2023-11-06 22:18:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:49,605 INFO L225 Difference]: With dead ends: 17542 [2023-11-06 22:18:49,605 INFO L226 Difference]: Without dead ends: 9055 [2023-11-06 22:18:49,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:18:49,636 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1260 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:49,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1224 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:18:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9055 states. [2023-11-06 22:18:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9055 to 8677. [2023-11-06 22:18:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8677 states, 6105 states have (on average 1.4604422604422604) internal successors, (8916), 6119 states have internal predecessors, (8916), 2367 states have call successors, (2367), 204 states have call predecessors, (2367), 204 states have return successors, (2367), 2353 states have call predecessors, (2367), 2367 states have call successors, (2367) [2023-11-06 22:18:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8677 states to 8677 states and 13650 transitions. [2023-11-06 22:18:51,170 INFO L78 Accepts]: Start accepts. Automaton has 8677 states and 13650 transitions. Word has length 780 [2023-11-06 22:18:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:51,171 INFO L495 AbstractCegarLoop]: Abstraction has 8677 states and 13650 transitions. [2023-11-06 22:18:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 6 states have call successors, (182), 4 states have call predecessors, (182), 10 states have return successors, (183), 6 states have call predecessors, (183), 6 states have call successors, (183) [2023-11-06 22:18:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8677 states and 13650 transitions. [2023-11-06 22:18:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-11-06 22:18:51,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:51,184 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:51,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:18:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:18:51,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:51,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1736198331, now seen corresponding path program 1 times [2023-11-06 22:18:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042139701] [2023-11-06 22:18:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:51,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:18:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488958209] [2023-11-06 22:18:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:18:51,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:51,500 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:18:51,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:18:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:52,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:18:52,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:18:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 19713 proven. 585 refuted. 0 times theorem prover too weak. 9226 trivial. 0 not checked. [2023-11-06 22:18:56,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:08,708 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~var_1_70~0 256)) (.cse1 (+ 2 (mod c_~var_1_33~0 4294967296)))) (and (forall ((v_z_24 Int)) (or (< .cse0 (+ v_z_24 1)) (< 127 v_z_24) (< v_z_24 1) (< (mod (mod 25 v_z_24) 4294967296) .cse1))) (or (< 127 .cse0) (< (mod (mod 25 .cse0) 4294967296) .cse1)))) is different from false [2023-11-06 22:19:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042139701] [2023-11-06 22:19:09,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:19:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488958209] [2023-11-06 22:19:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488958209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:09,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:19:09,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-06 22:19:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677175326] [2023-11-06 22:19:09,154 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:19:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:19:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=265, Unknown=1, NotChecked=34, Total=380 [2023-11-06 22:19:09,158 INFO L87 Difference]: Start difference. First operand 8677 states and 13650 transitions. Second operand has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 5 states have call successors, (122), 5 states have call predecessors, (122), 8 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) [2023-11-06 22:19:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:26,889 INFO L93 Difference]: Finished difference Result 32425 states and 49646 transitions. [2023-11-06 22:19:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-06 22:19:26,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 5 states have call successors, (122), 5 states have call predecessors, (122), 8 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) Word has length 781 [2023-11-06 22:19:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:26,975 INFO L225 Difference]: With dead ends: 32425 [2023-11-06 22:19:26,976 INFO L226 Difference]: Without dead ends: 23758 [2023-11-06 22:19:27,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=478, Invalid=1595, Unknown=1, NotChecked=88, Total=2162 [2023-11-06 22:19:27,002 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1032 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 3045 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 3045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:27,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 2696 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 3045 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-11-06 22:19:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23758 states. [2023-11-06 22:19:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23758 to 22420. [2023-11-06 22:19:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22420 states, 15911 states have (on average 1.4315253598139652) internal successors, (22777), 15979 states have internal predecessors, (22777), 5818 states have call successors, (5818), 690 states have call predecessors, (5818), 690 states have return successors, (5818), 5750 states have call predecessors, (5818), 5818 states have call successors, (5818) [2023-11-06 22:19:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22420 states to 22420 states and 34413 transitions. [2023-11-06 22:19:31,122 INFO L78 Accepts]: Start accepts. Automaton has 22420 states and 34413 transitions. Word has length 781 [2023-11-06 22:19:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:31,123 INFO L495 AbstractCegarLoop]: Abstraction has 22420 states and 34413 transitions. [2023-11-06 22:19:31,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 15 states have internal predecessors, (195), 5 states have call successors, (122), 5 states have call predecessors, (122), 8 states have return successors, (122), 5 states have call predecessors, (122), 5 states have call successors, (122) [2023-11-06 22:19:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 22420 states and 34413 transitions. [2023-11-06 22:19:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-11-06 22:19:31,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:31,140 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:31,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 22:19:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:19:31,352 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:31,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1695523581, now seen corresponding path program 1 times [2023-11-06 22:19:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724407681] [2023-11-06 22:19:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:31,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:19:31,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604385577] [2023-11-06 22:19:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:31,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:31,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:31,453 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:31,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:19:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:19:32,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 19988 proven. 435 refuted. 0 times theorem prover too weak. 9101 trivial. 0 not checked. [2023-11-06 22:19:37,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 285 proven. 78 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-11-06 22:19:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724407681] [2023-11-06 22:19:39,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:19:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604385577] [2023-11-06 22:19:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604385577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:39,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:19:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2023-11-06 22:19:39,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460913712] [2023-11-06 22:19:39,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:39,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:19:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:19:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:19:39,315 INFO L87 Difference]: Start difference. First operand 22420 states and 34413 transitions. Second operand has 19 states, 19 states have (on average 15.789473684210526) internal successors, (300), 19 states have internal predecessors, (300), 5 states have call successors, (210), 4 states have call predecessors, (210), 8 states have return successors, (211), 5 states have call predecessors, (211), 5 states have call successors, (211) [2023-11-06 22:19:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:54,940 INFO L93 Difference]: Finished difference Result 60298 states and 91245 transitions. [2023-11-06 22:19:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-06 22:19:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.789473684210526) internal successors, (300), 19 states have internal predecessors, (300), 5 states have call successors, (210), 4 states have call predecessors, (210), 8 states have return successors, (211), 5 states have call predecessors, (211), 5 states have call successors, (211) Word has length 781 [2023-11-06 22:19:54,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:55,086 INFO L225 Difference]: With dead ends: 60298 [2023-11-06 22:19:55,087 INFO L226 Difference]: Without dead ends: 37888 [2023-11-06 22:19:55,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1545 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=593, Invalid=1477, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:19:55,142 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 3191 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 4132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1795 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:55,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3226 Valid, 2077 Invalid, 4132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1795 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 22:19:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37888 states. [2023-11-06 22:19:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37888 to 18317. [2023-11-06 22:19:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18317 states, 13446 states have (on average 1.4501710545887252) internal successors, (19499), 13487 states have internal predecessors, (19499), 4276 states have call successors, (4276), 594 states have call predecessors, (4276), 594 states have return successors, (4276), 4235 states have call predecessors, (4276), 4276 states have call successors, (4276) [2023-11-06 22:19:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18317 states to 18317 states and 28051 transitions. [2023-11-06 22:19:58,830 INFO L78 Accepts]: Start accepts. Automaton has 18317 states and 28051 transitions. Word has length 781 [2023-11-06 22:19:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:58,832 INFO L495 AbstractCegarLoop]: Abstraction has 18317 states and 28051 transitions. [2023-11-06 22:19:58,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.789473684210526) internal successors, (300), 19 states have internal predecessors, (300), 5 states have call successors, (210), 4 states have call predecessors, (210), 8 states have return successors, (211), 5 states have call predecessors, (211), 5 states have call successors, (211) [2023-11-06 22:19:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18317 states and 28051 transitions. [2023-11-06 22:19:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-11-06 22:19:58,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:58,848 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:58,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:59,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:19:59,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:59,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1943670075, now seen corresponding path program 1 times [2023-11-06 22:19:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814471515] [2023-11-06 22:19:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:59,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:19:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689397373] [2023-11-06 22:19:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:59,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:59,151 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:59,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c42f6c3f-409a-45db-9b0e-faf7cac65e03/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:20:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:20:00,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 15897 proven. 519 refuted. 0 times theorem prover too weak. 13108 trivial. 0 not checked. [2023-11-06 22:20:04,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-11-06 22:20:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814471515] [2023-11-06 22:20:05,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689397373] [2023-11-06 22:20:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689397373] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:05,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2023-11-06 22:20:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616214653] [2023-11-06 22:20:05,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:05,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:05,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:20:05,233 INFO L87 Difference]: Start difference. First operand 18317 states and 28051 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-11-06 22:20:32,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:32,569 INFO L93 Difference]: Finished difference Result 138526 states and 210989 transitions. [2023-11-06 22:20:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:20:32,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 781 [2023-11-06 22:20:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:33,018 INFO L225 Difference]: With dead ends: 138526 [2023-11-06 22:20:33,019 INFO L226 Difference]: Without dead ends: 120219 [2023-11-06 22:20:33,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1548 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:20:33,080 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 2965 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 4202 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1334 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:33,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2965 Valid, 4202 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1334 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:20:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120219 states.