./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18ba50d64852b68ea2515543b9d6fd69509342b6bbaf4189c80d892ba3751848 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:04,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:04,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:04:04,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:04,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:04,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:04,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:04,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:04,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:04,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:04,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:04,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:04,303 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:04,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:04,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:04,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:04,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:04,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:04,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:04,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:04,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:04,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:04,309 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:04,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:04,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:04,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:04,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:04,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:04,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:04,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:04,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:04,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:04,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:04,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:04,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:04,315 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:04,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:04,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:04,316 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:04,316 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_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ba50d64852b68ea2515543b9d6fd69509342b6bbaf4189c80d892ba3751848 [2023-11-19 08:04:04,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:04,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:04,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:04,644 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:04,644 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:04,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i [2023-11-19 08:04:07,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:08,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:08,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i [2023-11-19 08:04:08,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/data/f62053bb9/0a82379a6a3e489886e63762804bf341/FLAGab255ccdd [2023-11-19 08:04:08,236 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/data/f62053bb9/0a82379a6a3e489886e63762804bf341 [2023-11-19 08:04:08,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:08,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:08,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:08,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:08,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:08,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de31632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08, skipping insertion in model container [2023-11-19 08:04:08,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:08,458 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_e3c0d674-5a39-4294-887e-5e5874af6833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i[916,929] [2023-11-19 08:04:08,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:08,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:08,649 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_e3c0d674-5a39-4294-887e-5e5874af6833/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-28.i[916,929] [2023-11-19 08:04:08,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:08,809 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:08,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08 WrapperNode [2023-11-19 08:04:08,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:08,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:08,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:08,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:08,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,946 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 396 [2023-11-19 08:04:08,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:08,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:08,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:08,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:08,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:08,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:09,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:09,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:09,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:09,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (1/1) ... [2023-11-19 08:04:09,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:09,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:09,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:09,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:04:09,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:04:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:09,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:09,367 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:09,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:10,326 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:10,338 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:10,339 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:10,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:10 BoogieIcfgContainer [2023-11-19 08:04:10,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:10,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:10,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:10,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:10,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:08" (1/3) ... [2023-11-19 08:04:10,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782cec1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:10, skipping insertion in model container [2023-11-19 08:04:10,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:08" (2/3) ... [2023-11-19 08:04:10,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782cec1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:10, skipping insertion in model container [2023-11-19 08:04:10,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:10" (3/3) ... [2023-11-19 08:04:10,359 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-28.i [2023-11-19 08:04:10,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:10,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:04:10,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:10,452 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25acb04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:10,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:04:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 104 states have internal predecessors, (145), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 08:04:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-19 08:04:10,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:10,499 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:10,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:10,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1539100154, now seen corresponding path program 1 times [2023-11-19 08:04:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646107800] [2023-11-19 08:04:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:11,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646107800] [2023-11-19 08:04:11,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:04:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491456841] [2023-11-19 08:04:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:11,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:11,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:11,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:11,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:11,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:04:11,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2023-11-19 08:04:11,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491456841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:11,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837558270] [2023-11-19 08:04:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:11,647 INFO L87 Difference]: Start difference. First operand has 172 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 104 states have internal predecessors, (145), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-11-19 08:04:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:11,724 INFO L93 Difference]: Finished difference Result 337 states and 614 transitions. [2023-11-19 08:04:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 405 [2023-11-19 08:04:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:11,741 INFO L225 Difference]: With dead ends: 337 [2023-11-19 08:04:11,741 INFO L226 Difference]: Without dead ends: 168 [2023-11-19 08:04:11,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:11,752 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:11,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-19 08:04:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-19 08:04:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 100 states have (on average 1.38) internal successors, (138), 100 states have internal predecessors, (138), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 08:04:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions. [2023-11-19 08:04:11,827 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 405 [2023-11-19 08:04:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:11,828 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 270 transitions. [2023-11-19 08:04:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2023-11-19 08:04:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions. [2023-11-19 08:04:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-19 08:04:11,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:11,841 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:11,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:04:12,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:12,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1713715346, now seen corresponding path program 1 times [2023-11-19 08:04:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:12,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442681240] [2023-11-19 08:04:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:12,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030749226] [2023-11-19 08:04:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:12,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:12,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:12,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:12,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-11-19 08:04:13,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442681240] [2023-11-19 08:04:13,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030749226] [2023-11-19 08:04:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030749226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:13,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:04:13,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28858313] [2023-11-19 08:04:13,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:13,412 INFO L87 Difference]: Start difference. First operand 168 states and 270 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:14,148 INFO L93 Difference]: Finished difference Result 699 states and 1125 transitions. [2023-11-19 08:04:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 405 [2023-11-19 08:04:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:14,161 INFO L225 Difference]: With dead ends: 699 [2023-11-19 08:04:14,162 INFO L226 Difference]: Without dead ends: 534 [2023-11-19 08:04:14,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:14,165 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 603 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:14,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1040 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:04:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-11-19 08:04:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 335. [2023-11-19 08:04:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 200 states have (on average 1.38) internal successors, (276), 200 states have internal predecessors, (276), 132 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-11-19 08:04:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 540 transitions. [2023-11-19 08:04:14,283 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 540 transitions. Word has length 405 [2023-11-19 08:04:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:14,286 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 540 transitions. [2023-11-19 08:04:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 540 transitions. [2023-11-19 08:04:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-19 08:04:14,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:14,292 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:14,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:14,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:14,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1771905324, now seen corresponding path program 1 times [2023-11-19 08:04:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827178421] [2023-11-19 08:04:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:14,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388700698] [2023-11-19 08:04:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:14,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:14,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:14,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:14,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:14,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:04:15,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-11-19 08:04:15,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827178421] [2023-11-19 08:04:15,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388700698] [2023-11-19 08:04:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388700698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:15,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346642026] [2023-11-19 08:04:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:15,625 INFO L87 Difference]: Start difference. First operand 335 states and 540 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:15,700 INFO L93 Difference]: Finished difference Result 999 states and 1614 transitions. [2023-11-19 08:04:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 405 [2023-11-19 08:04:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:15,718 INFO L225 Difference]: With dead ends: 999 [2023-11-19 08:04:15,719 INFO L226 Difference]: Without dead ends: 667 [2023-11-19 08:04:15,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:15,725 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 81 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:15,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 529 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-19 08:04:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 665. [2023-11-19 08:04:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 396 states have (on average 1.378787878787879) internal successors, (546), 396 states have internal predecessors, (546), 264 states have call successors, (264), 4 states have call predecessors, (264), 4 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2023-11-19 08:04:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1074 transitions. [2023-11-19 08:04:15,918 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1074 transitions. Word has length 405 [2023-11-19 08:04:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:15,925 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1074 transitions. [2023-11-19 08:04:15,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1074 transitions. [2023-11-19 08:04:15,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-19 08:04:15,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:15,935 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:15,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:16,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:16,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:16,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1409325105, now seen corresponding path program 1 times [2023-11-19 08:04:16,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:16,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634952773] [2023-11-19 08:04:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:16,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106278692] [2023-11-19 08:04:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:16,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:16,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:16,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:16,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:16,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:04:16,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-11-19 08:04:31,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634952773] [2023-11-19 08:04:31,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106278692] [2023-11-19 08:04:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106278692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:31,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:31,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:04:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535813300] [2023-11-19 08:04:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:04:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:04:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:04:31,658 INFO L87 Difference]: Start difference. First operand 665 states and 1074 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:33,887 INFO L93 Difference]: Finished difference Result 1657 states and 2619 transitions. [2023-11-19 08:04:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:04:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 406 [2023-11-19 08:04:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:33,900 INFO L225 Difference]: With dead ends: 1657 [2023-11-19 08:04:33,900 INFO L226 Difference]: Without dead ends: 995 [2023-11-19 08:04:33,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:04:33,906 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 207 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:33,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2034 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:04:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-19 08:04:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 822. [2023-11-19 08:04:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 525 states have (on average 1.3695238095238096) internal successors, (719), 528 states have internal predecessors, (719), 288 states have call successors, (288), 8 states have call predecessors, (288), 8 states have return successors, (288), 285 states have call predecessors, (288), 288 states have call successors, (288) [2023-11-19 08:04:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1295 transitions. [2023-11-19 08:04:34,103 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1295 transitions. Word has length 406 [2023-11-19 08:04:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:34,105 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1295 transitions. [2023-11-19 08:04:34,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1295 transitions. [2023-11-19 08:04:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-19 08:04:34,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:34,111 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:34,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:34,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:34,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -206951469, now seen corresponding path program 1 times [2023-11-19 08:04:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:34,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872065359] [2023-11-19 08:04:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:34,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:34,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071290091] [2023-11-19 08:04:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:34,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:34,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:34,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:34,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:04:34,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-11-19 08:04:47,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:47,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:47,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872065359] [2023-11-19 08:04:47,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071290091] [2023-11-19 08:04:47,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071290091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:47,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:47,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:04:47,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188983406] [2023-11-19 08:04:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:47,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:04:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:04:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:04:47,372 INFO L87 Difference]: Start difference. First operand 822 states and 1295 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:49,523 INFO L93 Difference]: Finished difference Result 1843 states and 2856 transitions. [2023-11-19 08:04:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 08:04:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 406 [2023-11-19 08:04:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:49,535 INFO L225 Difference]: With dead ends: 1843 [2023-11-19 08:04:49,536 INFO L226 Difference]: Without dead ends: 1037 [2023-11-19 08:04:49,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:04:49,541 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 298 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:49,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 958 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:04:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-19 08:04:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 858. [2023-11-19 08:04:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 561 states have (on average 1.3672014260249554) internal successors, (767), 564 states have internal predecessors, (767), 288 states have call successors, (288), 8 states have call predecessors, (288), 8 states have return successors, (288), 285 states have call predecessors, (288), 288 states have call successors, (288) [2023-11-19 08:04:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1343 transitions. [2023-11-19 08:04:49,744 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1343 transitions. Word has length 406 [2023-11-19 08:04:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:49,747 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1343 transitions. [2023-11-19 08:04:49,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-11-19 08:04:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1343 transitions. [2023-11-19 08:04:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-19 08:04:49,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:49,753 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:49,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:49,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:49,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash -398207855, now seen corresponding path program 1 times [2023-11-19 08:04:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058055209] [2023-11-19 08:04:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:49,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:50,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176321401] [2023-11-19 08:04:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:50,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:50,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:50,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:50,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c0d674-5a39-4294-887e-5e5874af6833/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:50,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:04:50,472 INFO L285 TraceCheckSpWp]: Computing forward predicates...