./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/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 c3eff42a8b8c884ae11f90d187410b4308f7ccc8d2492e13c8b7c80478f2454e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:29:40,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:29:40,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:29:40,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:29:40,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:29:41,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:29:41,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:29:41,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:29:41,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:29:41,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:29:41,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:29:41,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:29:41,045 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:29:41,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:29:41,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:29:41,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:29:41,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:29:41,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:29:41,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:29:41,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:29:41,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:29:41,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:29:41,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:29:41,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:29:41,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:29:41,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:29:41,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:29:41,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:29:41,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:41,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:29:41,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:29:41,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:29:41,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:29:41,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:29:41,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:29:41,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:29:41,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:29:41,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:29:41,062 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:29:41,063 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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3eff42a8b8c884ae11f90d187410b4308f7ccc8d2492e13c8b7c80478f2454e [2023-11-06 22:29:41,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:29:41,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:29:41,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:29:41,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:29:41,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:29:41,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.i [2023-11-06 22:29:44,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:29:45,349 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:29:45,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.i [2023-11-06 22:29:45,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/data/b402f175f/1682b2d979f54d4d87c8042e3d17fad4/FLAGa9261f9dd [2023-11-06 22:29:45,427 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/data/b402f175f/1682b2d979f54d4d87c8042e3d17fad4 [2023-11-06 22:29:45,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:29:45,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:29:45,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:45,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:29:45,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:29:45,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436bdbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45, skipping insertion in model container [2023-11-06 22:29:45,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:29:45,739 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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.i[916,929] [2023-11-06 22:29:45,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:46,001 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:29:46,016 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_0b30edbb-9fad-42e7-ba77-8417e7cf989d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-59.i[916,929] [2023-11-06 22:29:46,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:46,247 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:29:46,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46 WrapperNode [2023-11-06 22:29:46,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:46,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:46,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:29:46,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:29:46,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,446 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 887 [2023-11-06 22:29:46,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:46,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:29:46,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:29:46,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:29:46,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:29:46,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:29:46,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:29:46,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:29:46,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (1/1) ... [2023-11-06 22:29:46,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:46,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:29:46,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:29:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:29:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:29:46,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:29:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:29:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:29:46,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:29:47,075 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:29:47,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:29:48,882 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:29:48,907 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:29:48,907 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:29:48,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:48 BoogieIcfgContainer [2023-11-06 22:29:48,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:29:48,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:29:48,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:29:48,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:29:48,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:45" (1/3) ... [2023-11-06 22:29:48,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7f9052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:48, skipping insertion in model container [2023-11-06 22:29:48,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:46" (2/3) ... [2023-11-06 22:29:48,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7f9052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:48, skipping insertion in model container [2023-11-06 22:29:48,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:48" (3/3) ... [2023-11-06 22:29:48,931 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-59.i [2023-11-06 22:29:48,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:29:48,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:29:49,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:29:49,066 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;@3e78b554, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:29:49,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:29:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 234 states have (on average 1.623931623931624) internal successors, (380), 235 states have internal predecessors, (380), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-06 22:29:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-06 22:29:49,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:49,189 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:49,191 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:49,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 324270179, now seen corresponding path program 1 times [2023-11-06 22:29:49,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:49,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956642398] [2023-11-06 22:29:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:49,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588404457] [2023-11-06 22:29:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:49,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:49,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:29:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:50,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:29:50,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 10320 proven. 0 refuted. 0 times theorem prover too weak. 16360 trivial. 0 not checked. [2023-11-06 22:29:53,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:53,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956642398] [2023-11-06 22:29:53,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588404457] [2023-11-06 22:29:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588404457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:53,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:53,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:29:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57652496] [2023-11-06 22:29:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:53,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:53,861 INFO L87 Difference]: Start difference. First operand has 353 states, 234 states have (on average 1.623931623931624) internal successors, (380), 235 states have internal predecessors, (380), 116 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-06 22:29:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:54,120 INFO L93 Difference]: Finished difference Result 1044 states and 2054 transitions. [2023-11-06 22:29:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 731 [2023-11-06 22:29:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:54,156 INFO L225 Difference]: With dead ends: 1044 [2023-11-06 22:29:54,157 INFO L226 Difference]: Without dead ends: 694 [2023-11-06 22:29:54,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 728 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 22:29:54,180 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 651 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:54,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1172 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:29:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-06 22:29:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 692. [2023-11-06 22:29:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 457 states have (on average 1.6170678336980306) internal successors, (739), 457 states have internal predecessors, (739), 232 states have call successors, (232), 2 states have call predecessors, (232), 2 states have return successors, (232), 232 states have call predecessors, (232), 232 states have call successors, (232) [2023-11-06 22:29:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1203 transitions. [2023-11-06 22:29:54,515 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1203 transitions. Word has length 731 [2023-11-06 22:29:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:54,522 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1203 transitions. [2023-11-06 22:29:54,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-06 22:29:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1203 transitions. [2023-11-06 22:29:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-06 22:29:54,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:54,558 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:54,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:29:54,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:29:54,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:54,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash 268034069, now seen corresponding path program 1 times [2023-11-06 22:29:54,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:54,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529211543] [2023-11-06 22:29:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:54,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175651891] [2023-11-06 22:29:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:54,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:54,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:55,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:29:55,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:29:58,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:58,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:58,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529211543] [2023-11-06 22:29:58,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175651891] [2023-11-06 22:29:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175651891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:58,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:29:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710486816] [2023-11-06 22:29:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:58,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:58,638 INFO L87 Difference]: Start difference. First operand 692 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:29:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:58,944 INFO L93 Difference]: Finished difference Result 2062 states and 3587 transitions. [2023-11-06 22:29:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-11-06 22:29:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:58,972 INFO L225 Difference]: With dead ends: 2062 [2023-11-06 22:29:58,973 INFO L226 Difference]: Without dead ends: 1373 [2023-11-06 22:29:58,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 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 22:29:58,985 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 273 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:58,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1141 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:29:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-11-06 22:29:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1367. [2023-11-06 22:29:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 898 states have (on average 1.6080178173719377) internal successors, (1444), 898 states have internal predecessors, (1444), 464 states have call successors, (464), 4 states have call predecessors, (464), 4 states have return successors, (464), 464 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-06 22:29:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2372 transitions. [2023-11-06 22:29:59,328 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2372 transitions. Word has length 731 [2023-11-06 22:29:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:59,331 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 2372 transitions. [2023-11-06 22:29:59,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:29:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2372 transitions. [2023-11-06 22:29:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-06 22:29:59,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:59,345 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:59,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:59,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:59,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:59,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash -224592105, now seen corresponding path program 1 times [2023-11-06 22:29:59,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:59,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938951862] [2023-11-06 22:29:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:59,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252730399] [2023-11-06 22:29:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:59,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:30:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:00,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:30:00,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:00,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938951862] [2023-11-06 22:30:00,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252730399] [2023-11-06 22:30:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252730399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381841529] [2023-11-06 22:30:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:00,493 INFO L87 Difference]: Start difference. First operand 1367 states and 2372 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:00,687 INFO L93 Difference]: Finished difference Result 3159 states and 5494 transitions. [2023-11-06 22:30:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:00,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-11-06 22:30:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:00,708 INFO L225 Difference]: With dead ends: 3159 [2023-11-06 22:30:00,708 INFO L226 Difference]: Without dead ends: 1795 [2023-11-06 22:30:00,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 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 22:30:00,717 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 326 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:00,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1264 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2023-11-06 22:30:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1790. [2023-11-06 22:30:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1233 states have (on average 1.6261151662611517) internal successors, (2005), 1236 states have internal predecessors, (2005), 548 states have call successors, (548), 8 states have call predecessors, (548), 8 states have return successors, (548), 545 states have call predecessors, (548), 548 states have call successors, (548) [2023-11-06 22:30:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 3101 transitions. [2023-11-06 22:30:01,074 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 3101 transitions. Word has length 731 [2023-11-06 22:30:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:01,076 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 3101 transitions. [2023-11-06 22:30:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 3101 transitions. [2023-11-06 22:30:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-06 22:30:01,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:01,094 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:01,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:01,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:01,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:01,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:01,305 INFO L85 PathProgramCache]: Analyzing trace with hash -840416621, now seen corresponding path program 1 times [2023-11-06 22:30:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548902236] [2023-11-06 22:30:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:01,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611659891] [2023-11-06 22:30:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:01,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:01,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:01,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:01,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:30:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:02,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:30:02,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:02,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548902236] [2023-11-06 22:30:02,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611659891] [2023-11-06 22:30:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611659891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672691799] [2023-11-06 22:30:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:02,174 INFO L87 Difference]: Start difference. First operand 1790 states and 3101 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:02,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:02,401 INFO L93 Difference]: Finished difference Result 4514 states and 7833 transitions. [2023-11-06 22:30:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:02,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-11-06 22:30:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:02,430 INFO L225 Difference]: With dead ends: 4514 [2023-11-06 22:30:02,431 INFO L226 Difference]: Without dead ends: 2771 [2023-11-06 22:30:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 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 22:30:02,440 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 311 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:02,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1277 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2023-11-06 22:30:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2765. [2023-11-06 22:30:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 1992 states have (on average 1.6440763052208835) internal successors, (3275), 2001 states have internal predecessors, (3275), 756 states have call successors, (756), 16 states have call predecessors, (756), 16 states have return successors, (756), 747 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-06 22:30:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 4787 transitions. [2023-11-06 22:30:02,918 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 4787 transitions. Word has length 731 [2023-11-06 22:30:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:02,920 INFO L495 AbstractCegarLoop]: Abstraction has 2765 states and 4787 transitions. [2023-11-06 22:30:02,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 4787 transitions. [2023-11-06 22:30:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-06 22:30:02,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:02,933 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:02,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:03,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:03,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1460405969, now seen corresponding path program 1 times [2023-11-06 22:30:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098042145] [2023-11-06 22:30:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:03,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:03,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573544137] [2023-11-06 22:30:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:03,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:03,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:03,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:03,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:30:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:03,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:30:03,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:03,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098042145] [2023-11-06 22:30:03,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573544137] [2023-11-06 22:30:03,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573544137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:03,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:03,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592160920] [2023-11-06 22:30:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:03,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:03,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:03,954 INFO L87 Difference]: Start difference. First operand 2765 states and 4787 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:04,209 INFO L93 Difference]: Finished difference Result 7580 states and 13177 transitions. [2023-11-06 22:30:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 731 [2023-11-06 22:30:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:04,250 INFO L225 Difference]: With dead ends: 7580 [2023-11-06 22:30:04,250 INFO L226 Difference]: Without dead ends: 4862 [2023-11-06 22:30:04,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 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 22:30:04,263 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 348 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:04,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1523 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2023-11-06 22:30:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4852. [2023-11-06 22:30:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 3695 states have (on average 1.6728010825439783) internal successors, (6181), 3716 states have internal predecessors, (6181), 1124 states have call successors, (1124), 32 states have call predecessors, (1124), 32 states have return successors, (1124), 1103 states have call predecessors, (1124), 1124 states have call successors, (1124) [2023-11-06 22:30:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 8429 transitions. [2023-11-06 22:30:04,934 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 8429 transitions. Word has length 731 [2023-11-06 22:30:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:04,936 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 8429 transitions. [2023-11-06 22:30:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 8429 transitions. [2023-11-06 22:30:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-06 22:30:04,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:04,984 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:05,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:05,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:05,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:05,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1153103276, now seen corresponding path program 1 times [2023-11-06 22:30:05,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:05,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434734859] [2023-11-06 22:30:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:05,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:05,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016952533] [2023-11-06 22:30:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:05,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:05,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:30:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:05,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:30:05,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:05,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434734859] [2023-11-06 22:30:05,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016952533] [2023-11-06 22:30:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016952533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:05,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:05,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:30:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642811823] [2023-11-06 22:30:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:05,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:05,989 INFO L87 Difference]: Start difference. First operand 4852 states and 8429 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:07,741 INFO L93 Difference]: Finished difference Result 20928 states and 36125 transitions. [2023-11-06 22:30:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:30:07,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 732 [2023-11-06 22:30:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:07,888 INFO L225 Difference]: With dead ends: 20928 [2023-11-06 22:30:07,888 INFO L226 Difference]: Without dead ends: 16123 [2023-11-06 22:30:07,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 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 22:30:07,916 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1031 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:07,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 2563 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:30:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16123 states. [2023-11-06 22:30:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16123 to 16101. [2023-11-06 22:30:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16101 states, 12248 states have (on average 1.6401045068582625) internal successors, (20088), 12337 states have internal predecessors, (20088), 3724 states have call successors, (3724), 128 states have call predecessors, (3724), 128 states have return successors, (3724), 3635 states have call predecessors, (3724), 3724 states have call successors, (3724) [2023-11-06 22:30:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16101 states to 16101 states and 27536 transitions. [2023-11-06 22:30:09,998 INFO L78 Accepts]: Start accepts. Automaton has 16101 states and 27536 transitions. Word has length 732 [2023-11-06 22:30:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:10,000 INFO L495 AbstractCegarLoop]: Abstraction has 16101 states and 27536 transitions. [2023-11-06 22:30:10,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:10,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16101 states and 27536 transitions. [2023-11-06 22:30:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-06 22:30:10,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:10,143 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:10,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:10,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:30:10,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:10,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 535840466, now seen corresponding path program 1 times [2023-11-06 22:30:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:10,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956126262] [2023-11-06 22:30:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:10,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:10,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060052776] [2023-11-06 22:30:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:10,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:10,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:10,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:30:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:11,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1717 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:30:11,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 11563 proven. 237 refuted. 0 times theorem prover too weak. 14880 trivial. 0 not checked. [2023-11-06 22:30:12,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 108 proven. 237 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-06 22:30:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956126262] [2023-11-06 22:30:12,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060052776] [2023-11-06 22:30:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060052776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:12,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:30:12,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:30:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110192838] [2023-11-06 22:30:12,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:12,705 INFO L87 Difference]: Start difference. First operand 16101 states and 27536 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (195), 2 states have call predecessors, (195), 4 states have return successors, (196), 2 states have call predecessors, (196), 2 states have call successors, (196) [2023-11-06 22:30:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:14,769 INFO L93 Difference]: Finished difference Result 32475 states and 55301 transitions. [2023-11-06 22:30:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:30:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (195), 2 states have call predecessors, (195), 4 states have return successors, (196), 2 states have call predecessors, (196), 2 states have call successors, (196) Word has length 732 [2023-11-06 22:30:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:14,849 INFO L225 Difference]: With dead ends: 32475 [2023-11-06 22:30:14,849 INFO L226 Difference]: Without dead ends: 16421 [2023-11-06 22:30:14,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1456 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 22:30:14,906 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 333 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:14,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1214 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:30:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16421 states. [2023-11-06 22:30:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16421 to 16165. [2023-11-06 22:30:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16165 states, 12296 states have (on average 1.6332140533506831) internal successors, (20082), 12385 states have internal predecessors, (20082), 3724 states have call successors, (3724), 144 states have call predecessors, (3724), 144 states have return successors, (3724), 3635 states have call predecessors, (3724), 3724 states have call successors, (3724) [2023-11-06 22:30:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16165 states to 16165 states and 27530 transitions. [2023-11-06 22:30:16,976 INFO L78 Accepts]: Start accepts. Automaton has 16165 states and 27530 transitions. Word has length 732 [2023-11-06 22:30:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:16,978 INFO L495 AbstractCegarLoop]: Abstraction has 16165 states and 27530 transitions. [2023-11-06 22:30:16,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (195), 2 states have call predecessors, (195), 4 states have return successors, (196), 2 states have call predecessors, (196), 2 states have call successors, (196) [2023-11-06 22:30:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 16165 states and 27530 transitions. [2023-11-06 22:30:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-06 22:30:17,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:17,017 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:17,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:17,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:17,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1002499564, now seen corresponding path program 1 times [2023-11-06 22:30:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419692853] [2023-11-06 22:30:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:17,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089392387] [2023-11-06 22:30:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:17,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:17,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:17,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:17,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:30:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:17,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:30:17,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:19,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419692853] [2023-11-06 22:30:19,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:19,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089392387] [2023-11-06 22:30:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089392387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:19,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:30:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870673665] [2023-11-06 22:30:19,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:30:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:30:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:19,614 INFO L87 Difference]: Start difference. First operand 16165 states and 27530 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:22,049 INFO L93 Difference]: Finished difference Result 49428 states and 85371 transitions. [2023-11-06 22:30:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:30:22,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 732 [2023-11-06 22:30:22,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:22,178 INFO L225 Difference]: With dead ends: 49428 [2023-11-06 22:30:22,178 INFO L226 Difference]: Without dead ends: 33310 [2023-11-06 22:30:22,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:22,234 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1086 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:22,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 2209 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:30:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33310 states. [2023-11-06 22:30:24,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33310 to 23209. [2023-11-06 22:30:24,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23209 states, 19247 states have (on average 1.6926793786044578) internal successors, (32579), 19335 states have internal predecessors, (32579), 3812 states have call successors, (3812), 149 states have call predecessors, (3812), 149 states have return successors, (3812), 3724 states have call predecessors, (3812), 3812 states have call successors, (3812) [2023-11-06 22:30:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 40203 transitions. [2023-11-06 22:30:24,960 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 40203 transitions. Word has length 732 [2023-11-06 22:30:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:24,962 INFO L495 AbstractCegarLoop]: Abstraction has 23209 states and 40203 transitions. [2023-11-06 22:30:24,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 40203 transitions. [2023-11-06 22:30:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-06 22:30:24,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:24,987 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:25,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:30:25,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:25,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 845066727, now seen corresponding path program 1 times [2023-11-06 22:30:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136412993] [2023-11-06 22:30:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:25,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:25,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938501991] [2023-11-06 22:30:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:25,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:25,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:30:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:26,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:30:26,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 11385 proven. 240 refuted. 0 times theorem prover too weak. 15055 trivial. 0 not checked. [2023-11-06 22:30:27,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 105 proven. 240 refuted. 0 times theorem prover too weak. 26335 trivial. 0 not checked. [2023-11-06 22:30:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136412993] [2023-11-06 22:30:28,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938501991] [2023-11-06 22:30:28,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938501991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:28,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:30:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:30:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745049506] [2023-11-06 22:30:28,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:28,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:28,256 INFO L87 Difference]: Start difference. First operand 23209 states and 40203 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (196), 2 states have call predecessors, (196), 4 states have return successors, (197), 2 states have call predecessors, (197), 2 states have call successors, (197) [2023-11-06 22:30:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:30,653 INFO L93 Difference]: Finished difference Result 40693 states and 69652 transitions. [2023-11-06 22:30:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (196), 2 states have call predecessors, (196), 4 states have return successors, (197), 2 states have call predecessors, (197), 2 states have call successors, (197) Word has length 733 [2023-11-06 22:30:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:30,739 INFO L225 Difference]: With dead ends: 40693 [2023-11-06 22:30:30,740 INFO L226 Difference]: Without dead ends: 21271 [2023-11-06 22:30:30,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1458 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 22:30:30,784 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 305 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:30,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1203 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:30:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21271 states. [2023-11-06 22:30:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21271 to 20977. [2023-11-06 22:30:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20977 states, 16999 states have (on average 1.6628625213247838) internal successors, (28267), 17087 states have internal predecessors, (28267), 3812 states have call successors, (3812), 165 states have call predecessors, (3812), 165 states have return successors, (3812), 3724 states have call predecessors, (3812), 3812 states have call successors, (3812) [2023-11-06 22:30:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20977 states to 20977 states and 35891 transitions. [2023-11-06 22:30:32,963 INFO L78 Accepts]: Start accepts. Automaton has 20977 states and 35891 transitions. Word has length 733 [2023-11-06 22:30:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:32,967 INFO L495 AbstractCegarLoop]: Abstraction has 20977 states and 35891 transitions. [2023-11-06 22:30:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (196), 2 states have call predecessors, (196), 4 states have return successors, (197), 2 states have call predecessors, (197), 2 states have call successors, (197) [2023-11-06 22:30:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20977 states and 35891 transitions. [2023-11-06 22:30:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-06 22:30:32,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:32,990 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:33,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:33,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:33,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 89457891, now seen corresponding path program 1 times [2023-11-06 22:30:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:33,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911930086] [2023-11-06 22:30:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:33,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89688725] [2023-11-06 22:30:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:33,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:33,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:30:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:34,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:30:34,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:36,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911930086] [2023-11-06 22:30:36,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89688725] [2023-11-06 22:30:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89688725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324789205] [2023-11-06 22:30:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:36,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:36,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:36,728 INFO L87 Difference]: Start difference. First operand 20977 states and 35891 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:38,244 INFO L93 Difference]: Finished difference Result 46575 states and 79607 transitions. [2023-11-06 22:30:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 733 [2023-11-06 22:30:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:38,326 INFO L225 Difference]: With dead ends: 46575 [2023-11-06 22:30:38,327 INFO L226 Difference]: Without dead ends: 27938 [2023-11-06 22:30:38,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 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 22:30:38,363 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 571 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:38,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1773 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:30:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27938 states. [2023-11-06 22:30:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27938 to 24936. [2023-11-06 22:30:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24936 states, 20958 states have (on average 1.691096478671629) internal successors, (35442), 21046 states have internal predecessors, (35442), 3812 states have call successors, (3812), 165 states have call predecessors, (3812), 165 states have return successors, (3812), 3724 states have call predecessors, (3812), 3812 states have call successors, (3812) [2023-11-06 22:30:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24936 states to 24936 states and 43066 transitions. [2023-11-06 22:30:40,346 INFO L78 Accepts]: Start accepts. Automaton has 24936 states and 43066 transitions. Word has length 733 [2023-11-06 22:30:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:40,348 INFO L495 AbstractCegarLoop]: Abstraction has 24936 states and 43066 transitions. [2023-11-06 22:30:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24936 states and 43066 transitions. [2023-11-06 22:30:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-06 22:30:40,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:40,375 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:40,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:40,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:40,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1715980443, now seen corresponding path program 1 times [2023-11-06 22:30:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749403489] [2023-11-06 22:30:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:40,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679508869] [2023-11-06 22:30:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:40,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:40,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:40,680 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:40,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:30:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:41,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:30:41,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:41,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749403489] [2023-11-06 22:30:41,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679508869] [2023-11-06 22:30:41,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679508869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:41,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:41,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916118697] [2023-11-06 22:30:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:41,379 INFO L87 Difference]: Start difference. First operand 24936 states and 43066 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:42,575 INFO L93 Difference]: Finished difference Result 49766 states and 85993 transitions. [2023-11-06 22:30:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 733 [2023-11-06 22:30:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:42,642 INFO L225 Difference]: With dead ends: 49766 [2023-11-06 22:30:42,642 INFO L226 Difference]: Without dead ends: 25076 [2023-11-06 22:30:42,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 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 22:30:42,686 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 6 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:42,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1198 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25076 states. [2023-11-06 22:30:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25076 to 24964. [2023-11-06 22:30:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24964 states, 20986 states have (on average 1.690174401982274) internal successors, (35470), 21074 states have internal predecessors, (35470), 3812 states have call successors, (3812), 165 states have call predecessors, (3812), 165 states have return successors, (3812), 3724 states have call predecessors, (3812), 3812 states have call successors, (3812) [2023-11-06 22:30:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24964 states to 24964 states and 43094 transitions. [2023-11-06 22:30:44,626 INFO L78 Accepts]: Start accepts. Automaton has 24964 states and 43094 transitions. Word has length 733 [2023-11-06 22:30:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:44,628 INFO L495 AbstractCegarLoop]: Abstraction has 24964 states and 43094 transitions. [2023-11-06 22:30:44,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 24964 states and 43094 transitions. [2023-11-06 22:30:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-06 22:30:44,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:44,659 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:44,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:30:44,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:44,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:44,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1641734549, now seen corresponding path program 1 times [2023-11-06 22:30:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936083414] [2023-11-06 22:30:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:44,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:44,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626271237] [2023-11-06 22:30:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:44,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:44,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:45,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:30:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:45,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:30:45,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:46,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:46,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936083414] [2023-11-06 22:30:46,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626271237] [2023-11-06 22:30:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626271237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:46,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:30:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187729736] [2023-11-06 22:30:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:46,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:30:46,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:30:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:46,879 INFO L87 Difference]: Start difference. First operand 24964 states and 43094 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:50,288 INFO L93 Difference]: Finished difference Result 78021 states and 134537 transitions. [2023-11-06 22:30:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:30:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 734 [2023-11-06 22:30:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:50,391 INFO L225 Difference]: With dead ends: 78021 [2023-11-06 22:30:50,391 INFO L226 Difference]: Without dead ends: 58429 [2023-11-06 22:30:50,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 730 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 22:30:50,432 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 1548 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3374 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:30:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58429 states. [2023-11-06 22:30:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58429 to 58325. [2023-11-06 22:30:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58325 states, 50018 states have (on average 1.699268263425167) internal successors, (84994), 50246 states have internal predecessors, (84994), 7964 states have call successors, (7964), 342 states have call predecessors, (7964), 342 states have return successors, (7964), 7736 states have call predecessors, (7964), 7964 states have call successors, (7964) [2023-11-06 22:30:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58325 states to 58325 states and 100922 transitions. [2023-11-06 22:30:53,958 INFO L78 Accepts]: Start accepts. Automaton has 58325 states and 100922 transitions. Word has length 734 [2023-11-06 22:30:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 58325 states and 100922 transitions. [2023-11-06 22:30:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 58325 states and 100922 transitions. [2023-11-06 22:30:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-06 22:30:53,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:53,998 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:54,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:54,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:54,208 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:54,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash -69810781, now seen corresponding path program 1 times [2023-11-06 22:30:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:54,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104553107] [2023-11-06 22:30:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:54,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:54,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:30:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993956440] [2023-11-06 22:30:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:54,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:54,549 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:54,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:30:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:55,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:30:55,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:30:56,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104553107] [2023-11-06 22:30:56,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993956440] [2023-11-06 22:30:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993956440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:56,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:56,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91438859] [2023-11-06 22:30:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:56,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:56,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:56,070 INFO L87 Difference]: Start difference. First operand 58325 states and 100922 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:30:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:59,420 INFO L93 Difference]: Finished difference Result 111951 states and 192933 transitions. [2023-11-06 22:30:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 734 [2023-11-06 22:30:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:59,610 INFO L225 Difference]: With dead ends: 111951 [2023-11-06 22:30:59,610 INFO L226 Difference]: Without dead ends: 77515 [2023-11-06 22:30:59,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 731 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 22:30:59,676 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1020 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:59,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1826 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:30:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77515 states. [2023-11-06 22:31:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77515 to 77491. [2023-11-06 22:31:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77491 states, 66164 states have (on average 1.6918868266731153) internal successors, (111942), 66466 states have internal predecessors, (111942), 10832 states have call successors, (10832), 494 states have call predecessors, (10832), 494 states have return successors, (10832), 10530 states have call predecessors, (10832), 10832 states have call successors, (10832) [2023-11-06 22:31:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77491 states to 77491 states and 133606 transitions. [2023-11-06 22:31:04,960 INFO L78 Accepts]: Start accepts. Automaton has 77491 states and 133606 transitions. Word has length 734 [2023-11-06 22:31:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:04,961 INFO L495 AbstractCegarLoop]: Abstraction has 77491 states and 133606 transitions. [2023-11-06 22:31:04,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:31:04,961 INFO L276 IsEmpty]: Start isEmpty. Operand 77491 states and 133606 transitions. [2023-11-06 22:31:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-06 22:31:05,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:05,015 INFO L195 NwaCegarLoop]: trace histogram [116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:05,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:31:05,225 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:05,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1285964507, now seen corresponding path program 1 times [2023-11-06 22:31:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759321297] [2023-11-06 22:31:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:05,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:31:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000600059] [2023-11-06 22:31:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:05,315 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:05,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b30edbb-9fad-42e7-ba77-8417e7cf989d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:31:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:06,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:06,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26680 trivial. 0 not checked. [2023-11-06 22:31:08,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:08,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759321297] [2023-11-06 22:31:08,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:31:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000600059] [2023-11-06 22:31:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000600059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089086578] [2023-11-06 22:31:08,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:08,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:08,638 INFO L87 Difference]: Start difference. First operand 77491 states and 133606 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) [2023-11-06 22:31:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:14,969 INFO L93 Difference]: Finished difference Result 229458 states and 395507 transitions. [2023-11-06 22:31:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 1 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 1 states have call predecessors, (116), 1 states have call successors, (116) Word has length 734 [2023-11-06 22:31:14,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:15,326 INFO L225 Difference]: With dead ends: 229458 [2023-11-06 22:31:15,326 INFO L226 Difference]: Without dead ends: 152882 [2023-11-06 22:31:15,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 732 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 22:31:15,419 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 270 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:15,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1372 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152882 states.