./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.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_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/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_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/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_9f2463e2-b0c4-4852-9049-6f180068814f/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 33e0a789597382a31147e3473eca939384c88c4f131feb04f2abaaba75adfc69 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:29:24,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:29:24,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:29:24,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:29:24,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:29:24,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:29:24,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:29:24,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:29:24,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:29:24,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:29:24,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:29:24,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:29:24,646 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:29:24,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:29:24,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:29:24,648 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:29:24,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:29:24,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:29:24,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:29:24,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:29:24,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:29:24,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:29:24,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:29:24,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:29:24,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:29:24,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:29:24,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:29:24,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:29:24,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:24,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:29:24,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:29:24,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:29:24,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:29:24,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:29:24,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:29:24,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:29:24,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:29:24,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:29:24,660 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:29:24,660 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_9f2463e2-b0c4-4852-9049-6f180068814f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33e0a789597382a31147e3473eca939384c88c4f131feb04f2abaaba75adfc69 [2023-11-06 22:29:25,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:29:25,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:29:25,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:29:25,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:29:25,067 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:29:25,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-11-06 22:29:28,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:29:28,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:29:28,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-11-06 22:29:28,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/data/d7e9f98e0/d307d3b0e6144a30a8ccdf465d62e8d5/FLAGbdd9d313e [2023-11-06 22:29:28,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/data/d7e9f98e0/d307d3b0e6144a30a8ccdf465d62e8d5 [2023-11-06 22:29:28,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:29:28,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:29:28,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:28,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:29:28,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:29:28,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:28" (1/1) ... [2023-11-06 22:29:28,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b04afc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:28, skipping insertion in model container [2023-11-06 22:29:28,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:28" (1/1) ... [2023-11-06 22:29:28,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:29:28,862 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_9f2463e2-b0c4-4852-9049-6f180068814f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i[916,929] [2023-11-06 22:29:29,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:29,155 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:29:29,168 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_9f2463e2-b0c4-4852-9049-6f180068814f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i[916,929] [2023-11-06 22:29:29,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:29,291 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:29:29,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29 WrapperNode [2023-11-06 22:29:29,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:29,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:29,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:29:29,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:29:29,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,496 INFO L138 Inliner]: procedures = 26, calls = 125, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 970 [2023-11-06 22:29:29,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:29,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:29:29,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:29:29,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:29:29,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:29:29,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:29:29,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:29:29,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:29:29,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (1/1) ... [2023-11-06 22:29:29,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:29,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:29:29,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:29:29,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:29:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:29:29,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:29:29,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:29:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:29:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:29:29,969 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:29:29,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:29:31,309 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:29:31,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:29:31,320 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:29:31,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:31 BoogieIcfgContainer [2023-11-06 22:29:31,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:29:31,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:29:31,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:29:31,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:29:31,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:28" (1/3) ... [2023-11-06 22:29:31,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2644d384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:31, skipping insertion in model container [2023-11-06 22:29:31,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:29" (2/3) ... [2023-11-06 22:29:31,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2644d384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:31, skipping insertion in model container [2023-11-06 22:29:31,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:31" (3/3) ... [2023-11-06 22:29:31,332 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-11-06 22:29:31,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:29:31,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:29:31,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:29:31,423 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;@748a03b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:29:31,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:29:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 359 states, 244 states have (on average 1.6311475409836065) internal successors, (398), 245 states have internal predecessors, (398), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-06 22:29:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:31,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:31,499 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:31,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:31,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash 724347850, now seen corresponding path program 1 times [2023-11-06 22:29:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:31,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354587850] [2023-11-06 22:29:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354587850] [2023-11-06 22:29:32,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:29:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350575951] [2023-11-06 22:29:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:32,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:32,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:32,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:29:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:32,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:29:32,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24642 trivial. 0 not checked. [2023-11-06 22:29:32,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350575951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:32,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:32,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:29:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670675705] [2023-11-06 22:29:32,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:32,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:29:32,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:29:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:29:33,020 INFO L87 Difference]: Start difference. First operand has 359 states, 244 states have (on average 1.6311475409836065) internal successors, (398), 245 states have internal predecessors, (398), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-06 22:29:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:33,109 INFO L93 Difference]: Finished difference Result 711 states and 1350 transitions. [2023-11-06 22:29:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:29:33,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) Word has length 724 [2023-11-06 22:29:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:33,126 INFO L225 Difference]: With dead ends: 711 [2023-11-06 22:29:33,126 INFO L226 Difference]: Without dead ends: 355 [2023-11-06 22:29:33,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 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 22:29:33,138 INFO L413 NwaCegarLoop]: 612 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, 612 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 22:29:33,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-06 22:29:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2023-11-06 22:29:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 241 states have (on average 1.6099585062240664) internal successors, (388), 241 states have internal predecessors, (388), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-06 22:29:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 612 transitions. [2023-11-06 22:29:33,248 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 612 transitions. Word has length 724 [2023-11-06 22:29:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:33,249 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 612 transitions. [2023-11-06 22:29:33,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-06 22:29:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 612 transitions. [2023-11-06 22:29:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:33,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:33,282 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:33,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:29:33,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:29:33,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:33,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash -212790574, now seen corresponding path program 1 times [2023-11-06 22:29:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:33,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3489062] [2023-11-06 22:29:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:33,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:33,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854866216] [2023-11-06 22:29:33,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:33,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:33,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:34,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:29:34,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:35,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3489062] [2023-11-06 22:29:35,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854866216] [2023-11-06 22:29:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854866216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:35,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651984609] [2023-11-06 22:29:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:35,491 INFO L87 Difference]: Start difference. First operand 355 states and 612 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:36,037 INFO L93 Difference]: Finished difference Result 1060 states and 1832 transitions. [2023-11-06 22:29:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:36,056 INFO L225 Difference]: With dead ends: 1060 [2023-11-06 22:29:36,056 INFO L226 Difference]: Without dead ends: 708 [2023-11-06 22:29:36,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:36,059 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 297 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:36,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1581 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:29:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-11-06 22:29:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2023-11-06 22:29:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 479 states have (on average 1.6116910229645094) internal successors, (772), 479 states have internal predecessors, (772), 224 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:29:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1220 transitions. [2023-11-06 22:29:36,309 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1220 transitions. Word has length 724 [2023-11-06 22:29:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:36,312 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1220 transitions. [2023-11-06 22:29:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1220 transitions. [2023-11-06 22:29:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:36,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:36,322 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:36,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:29:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:36,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:36,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -185724972, now seen corresponding path program 1 times [2023-11-06 22:29:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:36,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419201477] [2023-11-06 22:29:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:36,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539176278] [2023-11-06 22:29:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:36,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:36,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:36,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:29:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:37,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:29:37,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:37,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419201477] [2023-11-06 22:29:37,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:37,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539176278] [2023-11-06 22:29:37,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539176278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:37,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:37,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594268138] [2023-11-06 22:29:37,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:37,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:37,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:37,414 INFO L87 Difference]: Start difference. First operand 706 states and 1220 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:37,483 INFO L93 Difference]: Finished difference Result 1409 states and 2437 transitions. [2023-11-06 22:29:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:37,494 INFO L225 Difference]: With dead ends: 1409 [2023-11-06 22:29:37,494 INFO L226 Difference]: Without dead ends: 706 [2023-11-06 22:29:37,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:37,499 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 3 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:37,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1213 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-11-06 22:29:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2023-11-06 22:29:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 479 states have (on average 1.6075156576200418) internal successors, (770), 479 states have internal predecessors, (770), 224 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-11-06 22:29:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1218 transitions. [2023-11-06 22:29:37,676 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1218 transitions. Word has length 724 [2023-11-06 22:29:37,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:37,678 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1218 transitions. [2023-11-06 22:29:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1218 transitions. [2023-11-06 22:29:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:37,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:37,688 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:37,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:37,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:37,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2096767530, now seen corresponding path program 1 times [2023-11-06 22:29:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051604629] [2023-11-06 22:29:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:38,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:38,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233503209] [2023-11-06 22:29:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:38,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:38,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:38,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:29:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:38,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:29:38,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:41,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:41,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:41,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051604629] [2023-11-06 22:29:41,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233503209] [2023-11-06 22:29:41,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233503209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:41,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:41,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:41,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383220454] [2023-11-06 22:29:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:41,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:41,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:41,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:41,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:41,634 INFO L87 Difference]: Start difference. First operand 706 states and 1218 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:42,241 INFO L93 Difference]: Finished difference Result 1763 states and 3043 transitions. [2023-11-06 22:29:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:42,255 INFO L225 Difference]: With dead ends: 1763 [2023-11-06 22:29:42,255 INFO L226 Difference]: Without dead ends: 1060 [2023-11-06 22:29:42,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 721 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 22:29:42,265 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 252 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:42,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1569 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:29:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-11-06 22:29:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1058. [2023-11-06 22:29:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 718 states have (on average 1.607242339832869) internal successors, (1154), 718 states have internal predecessors, (1154), 336 states have call successors, (336), 3 states have call predecessors, (336), 3 states have return successors, (336), 336 states have call predecessors, (336), 336 states have call successors, (336) [2023-11-06 22:29:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1826 transitions. [2023-11-06 22:29:42,481 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1826 transitions. Word has length 724 [2023-11-06 22:29:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:42,484 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1826 transitions. [2023-11-06 22:29:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1826 transitions. [2023-11-06 22:29:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:42,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:42,495 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:42,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:29:42,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:42,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:42,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2125813208, now seen corresponding path program 1 times [2023-11-06 22:29:42,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:42,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409957922] [2023-11-06 22:29:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:42,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645758159] [2023-11-06 22:29:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:42,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:42,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:42,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:42,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:29:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:43,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:29:43,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:43,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409957922] [2023-11-06 22:29:43,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645758159] [2023-11-06 22:29:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645758159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753836282] [2023-11-06 22:29:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:43,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:43,702 INFO L87 Difference]: Start difference. First operand 1058 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:43,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:43,811 INFO L93 Difference]: Finished difference Result 2661 states and 4620 transitions. [2023-11-06 22:29:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:43,827 INFO L225 Difference]: With dead ends: 2661 [2023-11-06 22:29:43,828 INFO L226 Difference]: Without dead ends: 1606 [2023-11-06 22:29:43,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 722 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 22:29:43,833 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 289 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:43,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1287 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2023-11-06 22:29:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1601. [2023-11-06 22:29:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1204 states have (on average 1.6669435215946844) internal successors, (2007), 1207 states have internal predecessors, (2007), 390 states have call successors, (390), 6 states have call predecessors, (390), 6 states have return successors, (390), 387 states have call predecessors, (390), 390 states have call successors, (390) [2023-11-06 22:29:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2787 transitions. [2023-11-06 22:29:44,103 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2787 transitions. Word has length 724 [2023-11-06 22:29:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:44,105 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2787 transitions. [2023-11-06 22:29:44,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2787 transitions. [2023-11-06 22:29:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:44,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:44,116 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:44,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:44,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:44,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:44,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1616340118, now seen corresponding path program 1 times [2023-11-06 22:29:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:44,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945512326] [2023-11-06 22:29:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:44,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:44,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434616426] [2023-11-06 22:29:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:44,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:44,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:29:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:45,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:29:45,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:45,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945512326] [2023-11-06 22:29:45,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434616426] [2023-11-06 22:29:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434616426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2718051] [2023-11-06 22:29:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:45,142 INFO L87 Difference]: Start difference. First operand 1601 states and 2787 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:45,329 INFO L93 Difference]: Finished difference Result 4310 states and 7457 transitions. [2023-11-06 22:29:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:45,355 INFO L225 Difference]: With dead ends: 4310 [2023-11-06 22:29:45,355 INFO L226 Difference]: Without dead ends: 2712 [2023-11-06 22:29:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 722 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 22:29:45,364 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 390 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:45,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1200 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-11-06 22:29:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2707. [2023-11-06 22:29:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2001 states have (on average 1.6346826586706646) internal successors, (3271), 2010 states have internal predecessors, (3271), 693 states have call successors, (693), 12 states have call predecessors, (693), 12 states have return successors, (693), 684 states have call predecessors, (693), 693 states have call successors, (693) [2023-11-06 22:29:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4657 transitions. [2023-11-06 22:29:45,809 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4657 transitions. Word has length 724 [2023-11-06 22:29:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:45,810 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 4657 transitions. [2023-11-06 22:29:45,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4657 transitions. [2023-11-06 22:29:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-06 22:29:45,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:45,822 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:45,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:29:46,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:46,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1263251736, now seen corresponding path program 1 times [2023-11-06 22:29:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176623134] [2023-11-06 22:29:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:46,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:46,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330262838] [2023-11-06 22:29:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:46,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:46,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:46,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:29:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:46,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:29:46,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:47,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:47,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176623134] [2023-11-06 22:29:47,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330262838] [2023-11-06 22:29:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330262838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:47,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:47,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033578816] [2023-11-06 22:29:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:47,052 INFO L87 Difference]: Start difference. First operand 2707 states and 4657 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:47,438 INFO L93 Difference]: Finished difference Result 7571 states and 13004 transitions. [2023-11-06 22:29:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-11-06 22:29:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:47,488 INFO L225 Difference]: With dead ends: 7571 [2023-11-06 22:29:47,489 INFO L226 Difference]: Without dead ends: 4867 [2023-11-06 22:29:47,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 722 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 22:29:47,504 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 360 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:47,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1391 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2023-11-06 22:29:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4859. [2023-11-06 22:29:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 3625 states have (on average 1.6295172413793104) internal successors, (5907), 3646 states have internal predecessors, (5907), 1209 states have call successors, (1209), 24 states have call predecessors, (1209), 24 states have return successors, (1209), 1188 states have call predecessors, (1209), 1209 states have call successors, (1209) [2023-11-06 22:29:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 8325 transitions. [2023-11-06 22:29:48,305 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 8325 transitions. Word has length 724 [2023-11-06 22:29:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:48,307 INFO L495 AbstractCegarLoop]: Abstraction has 4859 states and 8325 transitions. [2023-11-06 22:29:48,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 8325 transitions. [2023-11-06 22:29:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-11-06 22:29:48,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:48,325 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:48,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:48,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:48,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1311238824, now seen corresponding path program 1 times [2023-11-06 22:29:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789000546] [2023-11-06 22:29:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:48,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:48,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081195940] [2023-11-06 22:29:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:48,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:48,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:29:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:49,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:29:49,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:49,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:49,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789000546] [2023-11-06 22:29:49,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081195940] [2023-11-06 22:29:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081195940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:49,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:49,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:49,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274295278] [2023-11-06 22:29:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:49,554 INFO L87 Difference]: Start difference. First operand 4859 states and 8325 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:50,149 INFO L93 Difference]: Finished difference Result 14571 states and 24969 transitions. [2023-11-06 22:29:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 725 [2023-11-06 22:29:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:50,262 INFO L225 Difference]: With dead ends: 14571 [2023-11-06 22:29:50,263 INFO L226 Difference]: Without dead ends: 9715 [2023-11-06 22:29:50,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 723 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 22:29:50,285 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 594 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:50,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1748 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2023-11-06 22:29:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 9683. [2023-11-06 22:29:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9683 states, 7216 states have (on average 1.6200110864745012) internal successors, (11690), 7258 states have internal predecessors, (11690), 2418 states have call successors, (2418), 48 states have call predecessors, (2418), 48 states have return successors, (2418), 2376 states have call predecessors, (2418), 2418 states have call successors, (2418) [2023-11-06 22:29:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 16526 transitions. [2023-11-06 22:29:51,655 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 16526 transitions. Word has length 725 [2023-11-06 22:29:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:51,657 INFO L495 AbstractCegarLoop]: Abstraction has 9683 states and 16526 transitions. [2023-11-06 22:29:51,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 16526 transitions. [2023-11-06 22:29:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-11-06 22:29:51,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:51,685 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:51,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:51,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:29:51,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:51,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1294784730, now seen corresponding path program 1 times [2023-11-06 22:29:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731503000] [2023-11-06 22:29:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:52,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:52,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811478571] [2023-11-06 22:29:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:52,050 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:29:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:52,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:29:52,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:29:54,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:54,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731503000] [2023-11-06 22:29:54,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811478571] [2023-11-06 22:29:54,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811478571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:54,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:54,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:54,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916075673] [2023-11-06 22:29:54,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:29:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:29:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:29:54,326 INFO L87 Difference]: Start difference. First operand 9683 states and 16526 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:29:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:57,386 INFO L93 Difference]: Finished difference Result 38751 states and 66121 transitions. [2023-11-06 22:29:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:29:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 725 [2023-11-06 22:29:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:57,523 INFO L225 Difference]: With dead ends: 38751 [2023-11-06 22:29:57,524 INFO L226 Difference]: Without dead ends: 29071 [2023-11-06 22:29:57,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:29:57,576 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 1632 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:57,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 3029 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:29:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2023-11-06 22:30:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 29039. [2023-11-06 22:30:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29039 states, 21640 states have (on average 1.6069316081330869) internal successors, (34774), 21766 states have internal predecessors, (34774), 7254 states have call successors, (7254), 144 states have call predecessors, (7254), 144 states have return successors, (7254), 7128 states have call predecessors, (7254), 7254 states have call successors, (7254) [2023-11-06 22:30:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29039 states to 29039 states and 49282 transitions. [2023-11-06 22:30:01,650 INFO L78 Accepts]: Start accepts. Automaton has 29039 states and 49282 transitions. Word has length 725 [2023-11-06 22:30:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 29039 states and 49282 transitions. [2023-11-06 22:30:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:30:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29039 states and 49282 transitions. [2023-11-06 22:30:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2023-11-06 22:30:01,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:01,688 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:01,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:30:01,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:01,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1989065316, now seen corresponding path program 1 times [2023-11-06 22:30:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574255394] [2023-11-06 22:30:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:02,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732150537] [2023-11-06 22:30:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:02,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:02,024 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:02,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:30:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:02,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:30:02,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:30:03,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574255394] [2023-11-06 22:30:03,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732150537] [2023-11-06 22:30:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732150537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:30:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590283104] [2023-11-06 22:30:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:30:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:30:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:30:03,889 INFO L87 Difference]: Start difference. First operand 29039 states and 49282 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:30:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:08,042 INFO L93 Difference]: Finished difference Result 60323 states and 102337 transitions. [2023-11-06 22:30:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 725 [2023-11-06 22:30:08,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:08,194 INFO L225 Difference]: With dead ends: 60323 [2023-11-06 22:30:08,194 INFO L226 Difference]: Without dead ends: 31287 [2023-11-06 22:30:08,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:08,294 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 2378 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:08,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 3269 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:30:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31287 states. [2023-11-06 22:30:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31287 to 29039. [2023-11-06 22:30:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29039 states, 21640 states have (on average 1.6024953789279113) internal successors, (34678), 21766 states have internal predecessors, (34678), 7254 states have call successors, (7254), 144 states have call predecessors, (7254), 144 states have return successors, (7254), 7128 states have call predecessors, (7254), 7254 states have call successors, (7254) [2023-11-06 22:30:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29039 states to 29039 states and 49186 transitions. [2023-11-06 22:30:12,936 INFO L78 Accepts]: Start accepts. Automaton has 29039 states and 49186 transitions. Word has length 725 [2023-11-06 22:30:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:12,938 INFO L495 AbstractCegarLoop]: Abstraction has 29039 states and 49186 transitions. [2023-11-06 22:30:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:30:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 29039 states and 49186 transitions. [2023-11-06 22:30:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-11-06 22:30:12,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:12,972 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:12,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:13,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:13,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:13,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash -900545834, now seen corresponding path program 1 times [2023-11-06 22:30:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:13,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821813007] [2023-11-06 22:30:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:13,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:13,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124674321] [2023-11-06 22:30:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:13,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:13,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:30:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:14,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:30:14,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 10651 proven. 231 refuted. 0 times theorem prover too weak. 13982 trivial. 0 not checked. [2023-11-06 22:30:15,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 102 proven. 231 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-11-06 22:30:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821813007] [2023-11-06 22:30:15,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:15,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124674321] [2023-11-06 22:30:15,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124674321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:15,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:30:15,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-06 22:30:15,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25454119] [2023-11-06 22:30:15,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:15,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:30:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:30:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:30:15,864 INFO L87 Difference]: Start difference. First operand 29039 states and 49186 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-11-06 22:30:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:20,868 INFO L93 Difference]: Finished difference Result 88191 states and 148488 transitions. [2023-11-06 22:30:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:30:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) Word has length 726 [2023-11-06 22:30:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:21,097 INFO L225 Difference]: With dead ends: 88191 [2023-11-06 22:30:21,097 INFO L226 Difference]: Without dead ends: 59155 [2023-11-06 22:30:21,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1461 GetRequests, 1443 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:30:21,174 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1227 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:21,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 2417 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:30:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59155 states. [2023-11-06 22:30:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59155 to 58577. [2023-11-06 22:30:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58577 states, 43636 states have (on average 1.596754972958108) internal successors, (69676), 43888 states have internal predecessors, (69676), 14508 states have call successors, (14508), 432 states have call predecessors, (14508), 432 states have return successors, (14508), 14256 states have call predecessors, (14508), 14508 states have call successors, (14508) [2023-11-06 22:30:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58577 states to 58577 states and 98692 transitions. [2023-11-06 22:30:28,355 INFO L78 Accepts]: Start accepts. Automaton has 58577 states and 98692 transitions. Word has length 726 [2023-11-06 22:30:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:28,357 INFO L495 AbstractCegarLoop]: Abstraction has 58577 states and 98692 transitions. [2023-11-06 22:30:28,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-11-06 22:30:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 58577 states and 98692 transitions. [2023-11-06 22:30:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-11-06 22:30:28,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:28,432 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:28,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:28,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:28,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:28,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -21670319, now seen corresponding path program 1 times [2023-11-06 22:30:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930887518] [2023-11-06 22:30:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:28,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497062892] [2023-11-06 22:30:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:28,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:28,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:28,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:30:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:29,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:30:29,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 11841 proven. 126 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-11-06 22:30:30,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 207 proven. 126 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-11-06 22:30:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930887518] [2023-11-06 22:30:31,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:31,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497062892] [2023-11-06 22:30:31,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497062892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:31,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:30:31,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:30:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364657712] [2023-11-06 22:30:31,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:31,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:31,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:31,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:31,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:31,274 INFO L87 Difference]: Start difference. First operand 58577 states and 98692 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-11-06 22:30:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:34,518 INFO L93 Difference]: Finished difference Result 91615 states and 154217 transitions. [2023-11-06 22:30:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 727 [2023-11-06 22:30:34,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:34,692 INFO L225 Difference]: With dead ends: 91615 [2023-11-06 22:30:34,693 INFO L226 Difference]: Without dead ends: 33041 [2023-11-06 22:30:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1456 GetRequests, 1446 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 22:30:34,843 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 403 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1233 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:30:34,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33041 states. [2023-11-06 22:30:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33041 to 32609. [2023-11-06 22:30:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32609 states, 24004 states have (on average 1.5904015997333778) internal successors, (38176), 24112 states have internal predecessors, (38176), 8316 states have call successors, (8316), 288 states have call predecessors, (8316), 288 states have return successors, (8316), 8208 states have call predecessors, (8316), 8316 states have call successors, (8316) [2023-11-06 22:30:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32609 states to 32609 states and 54808 transitions. [2023-11-06 22:30:39,926 INFO L78 Accepts]: Start accepts. Automaton has 32609 states and 54808 transitions. Word has length 727 [2023-11-06 22:30:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:39,928 INFO L495 AbstractCegarLoop]: Abstraction has 32609 states and 54808 transitions. [2023-11-06 22:30:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-11-06 22:30:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 32609 states and 54808 transitions. [2023-11-06 22:30:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-06 22:30:39,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:39,989 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:40,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:40,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:30:40,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:40,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1391005155, now seen corresponding path program 1 times [2023-11-06 22:30:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949280999] [2023-11-06 22:30:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:40,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830789441] [2023-11-06 22:30:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:40,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:40,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:40,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:30:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:41,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:41,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:30:42,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949280999] [2023-11-06 22:30:42,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830789441] [2023-11-06 22:30:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830789441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:42,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:30:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738415880] [2023-11-06 22:30:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:42,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:30:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:30:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:42,756 INFO L87 Difference]: Start difference. First operand 32609 states and 54808 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:30:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:49,074 INFO L93 Difference]: Finished difference Result 119111 states and 200599 transitions. [2023-11-06 22:30:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:30:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 728 [2023-11-06 22:30:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:49,471 INFO L225 Difference]: With dead ends: 119111 [2023-11-06 22:30:49,471 INFO L226 Difference]: Without dead ends: 86505 [2023-11-06 22:30:49,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:49,603 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 510 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:49,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 2887 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:30:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86505 states. [2023-11-06 22:31:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86505 to 86429. [2023-11-06 22:31:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86429 states, 65620 states have (on average 1.602925937214264) internal successors, (105184), 65980 states have internal predecessors, (105184), 20088 states have call successors, (20088), 720 states have call predecessors, (20088), 720 states have return successors, (20088), 19728 states have call predecessors, (20088), 20088 states have call successors, (20088) [2023-11-06 22:31:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86429 states to 86429 states and 145360 transitions. [2023-11-06 22:31:01,866 INFO L78 Accepts]: Start accepts. Automaton has 86429 states and 145360 transitions. Word has length 728 [2023-11-06 22:31:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:01,867 INFO L495 AbstractCegarLoop]: Abstraction has 86429 states and 145360 transitions. [2023-11-06 22:31:01,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-11-06 22:31:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 86429 states and 145360 transitions. [2023-11-06 22:31:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-06 22:31:01,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:01,943 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:01,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:02,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:02,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1950021983, now seen corresponding path program 1 times [2023-11-06 22:31:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862160539] [2023-11-06 22:31:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:02,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:02,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118967537] [2023-11-06 22:31:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:02,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:02,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f2463e2-b0c4-4852-9049-6f180068814f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:31:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:03,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:31:03,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-11-06 22:31:04,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862160539] [2023-11-06 22:31:04,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118967537] [2023-11-06 22:31:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118967537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:04,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:04,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652595715] [2023-11-06 22:31:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:04,439 INFO L87 Difference]: Start difference. First operand 86429 states and 145360 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112)