./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/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 fa899b25f522973b6bbc58879b0eb17248367bb8b552686dbd6511ffcd7729d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:42,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:42,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:04:42,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:42,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:42,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:42,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:42,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:42,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:42,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:42,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:42,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:42,358 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:42,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:42,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:42,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:42,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:42,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:42,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:42,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:42,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:42,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:42,365 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:42,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:42,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:42,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:42,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:42,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:42,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:42,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:42,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:42,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:42,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:42,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:42,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:42,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:42,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:42,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:42,374 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:42,374 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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa899b25f522973b6bbc58879b0eb17248367bb8b552686dbd6511ffcd7729d0 [2023-11-06 22:04:42,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:42,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:42,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:42,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:42,789 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:42,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i [2023-11-06 22:04:45,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:46,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:46,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i [2023-11-06 22:04:46,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/data/7a6f3dbdf/f2c12bf9bd2c410499c2ecdcd612adf2/FLAG3ee9e0c78 [2023-11-06 22:04:46,248 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/data/7a6f3dbdf/f2c12bf9bd2c410499c2ecdcd612adf2 [2023-11-06 22:04:46,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:46,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:46,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:46,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:46,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:46,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16415ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46, skipping insertion in model container [2023-11-06 22:04:46,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:46,520 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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i[919,932] [2023-11-06 22:04:46,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:46,649 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:46,664 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_80f69d85-5408-4e14-b3d5-3c31e4c043d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i[919,932] [2023-11-06 22:04:46,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:46,763 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:46,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46 WrapperNode [2023-11-06 22:04:46,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:46,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:46,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:46,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:46,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,853 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2023-11-06 22:04:46,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:46,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:46,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:46,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:46,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:46,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:46,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:46,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:46,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (1/1) ... [2023-11-06 22:04:46,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:46,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:47,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:47,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:04:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:04:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:47,276 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:47,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:47,973 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:47,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:47,984 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:04:47,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:47 BoogieIcfgContainer [2023-11-06 22:04:47,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:47,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:47,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:47,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:47,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:46" (1/3) ... [2023-11-06 22:04:47,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3ccae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:47, skipping insertion in model container [2023-11-06 22:04:47,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:46" (2/3) ... [2023-11-06 22:04:48,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3ccae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:47, skipping insertion in model container [2023-11-06 22:04:48,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:47" (3/3) ... [2023-11-06 22:04:48,002 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-98.i [2023-11-06 22:04:48,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:48,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:04:48,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:48,119 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;@66a74dad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:48,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:04:48,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 64 states have (on average 1.46875) internal successors, (94), 65 states have internal predecessors, (94), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:04:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-06 22:04:48,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:48,158 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:48,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:48,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash -562294950, now seen corresponding path program 1 times [2023-11-06 22:04:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874796849] [2023-11-06 22:04:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:48,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874796849] [2023-11-06 22:04:48,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:04:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624044963] [2023-11-06 22:04:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:48,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:48,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:48,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:04:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:48,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:04:48,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-06 22:04:49,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624044963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:49,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:04:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530560931] [2023-11-06 22:04:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:04:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:04:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:49,114 INFO L87 Difference]: Start difference. First operand has 100 states, 64 states have (on average 1.46875) internal successors, (94), 65 states have internal predecessors, (94), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:04:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:49,196 INFO L93 Difference]: Finished difference Result 193 states and 347 transitions. [2023-11-06 22:04:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:04:49,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 211 [2023-11-06 22:04:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:49,210 INFO L225 Difference]: With dead ends: 193 [2023-11-06 22:04:49,211 INFO L226 Difference]: Without dead ends: 96 [2023-11-06 22:04:49,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:49,225 INFO L413 NwaCegarLoop]: 152 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, 152 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:49,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:04:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-06 22:04:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-06 22:04:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:04:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 152 transitions. [2023-11-06 22:04:49,294 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 152 transitions. Word has length 211 [2023-11-06 22:04:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:49,295 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 152 transitions. [2023-11-06 22:04:49,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:04:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 152 transitions. [2023-11-06 22:04:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-06 22:04:49,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:49,303 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:49,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:04:49,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:49,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1369916520, now seen corresponding path program 1 times [2023-11-06 22:04:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231347701] [2023-11-06 22:04:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:49,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012694624] [2023-11-06 22:04:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:49,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:49,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:49,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:04:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:49,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:04:49,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-06 22:04:50,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231347701] [2023-11-06 22:04:50,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012694624] [2023-11-06 22:04:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012694624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:50,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068973985] [2023-11-06 22:04:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:04:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:04:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:04:50,238 INFO L87 Difference]: Start difference. First operand 96 states and 152 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:50,827 INFO L93 Difference]: Finished difference Result 280 states and 446 transitions. [2023-11-06 22:04:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:04:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-06 22:04:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:50,844 INFO L225 Difference]: With dead ends: 280 [2023-11-06 22:04:50,845 INFO L226 Difference]: Without dead ends: 187 [2023-11-06 22:04:50,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 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 22:04:50,853 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 190 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:50,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 458 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:04:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-06 22:04:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-06 22:04:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-06 22:04:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 291 transitions. [2023-11-06 22:04:50,940 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 291 transitions. Word has length 211 [2023-11-06 22:04:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 291 transitions. [2023-11-06 22:04:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 291 transitions. [2023-11-06 22:04:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-06 22:04:50,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:50,956 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:50,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:51,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:51,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash 830519264, now seen corresponding path program 1 times [2023-11-06 22:04:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362337797] [2023-11-06 22:04:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:51,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:51,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634959628] [2023-11-06 22:04:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:51,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:51,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:51,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:04:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:51,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:04:51,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-06 22:04:52,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:04:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362337797] [2023-11-06 22:04:52,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634959628] [2023-11-06 22:04:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634959628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:04:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767417363] [2023-11-06 22:04:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:52,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:04:52,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:04:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:04:52,045 INFO L87 Difference]: Start difference. First operand 185 states and 291 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:53,060 INFO L93 Difference]: Finished difference Result 624 states and 984 transitions. [2023-11-06 22:04:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-06 22:04:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:53,071 INFO L225 Difference]: With dead ends: 624 [2023-11-06 22:04:53,071 INFO L226 Difference]: Without dead ends: 442 [2023-11-06 22:04:53,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 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 22:04:53,074 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 255 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:53,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 491 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:04:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-06 22:04:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 432. [2023-11-06 22:04:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 261 states have (on average 1.3486590038314177) internal successors, (352), 261 states have internal predecessors, (352), 165 states have call successors, (165), 5 states have call predecessors, (165), 5 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2023-11-06 22:04:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 682 transitions. [2023-11-06 22:04:53,211 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 682 transitions. Word has length 211 [2023-11-06 22:04:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:53,214 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 682 transitions. [2023-11-06 22:04:53,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 682 transitions. [2023-11-06 22:04:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-06 22:04:53,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:53,219 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:53,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:53,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:53,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 330324426, now seen corresponding path program 1 times [2023-11-06 22:04:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948498338] [2023-11-06 22:04:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:53,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:53,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217667758] [2023-11-06 22:04:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:53,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:53,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:53,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:04:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:53,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-06 22:04:53,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:04:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1475 proven. 162 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-11-06 22:04:56,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:04:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-06 22:04:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948498338] [2023-11-06 22:04:57,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:04:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217667758] [2023-11-06 22:04:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217667758] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:04:57,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:04:57,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2023-11-06 22:04:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159192924] [2023-11-06 22:04:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:57,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:04:57,299 INFO L87 Difference]: Start difference. First operand 432 states and 682 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:04:59,038 INFO L93 Difference]: Finished difference Result 1354 states and 2140 transitions. [2023-11-06 22:04:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:04:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-06 22:04:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:04:59,051 INFO L225 Difference]: With dead ends: 1354 [2023-11-06 22:04:59,051 INFO L226 Difference]: Without dead ends: 983 [2023-11-06 22:04:59,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:04:59,059 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 454 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:04:59,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 805 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:04:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-11-06 22:04:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 612. [2023-11-06 22:04:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 373 states have (on average 1.3458445040214477) internal successors, (502), 373 states have internal predecessors, (502), 231 states have call successors, (231), 7 states have call predecessors, (231), 7 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) [2023-11-06 22:04:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 964 transitions. [2023-11-06 22:04:59,242 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 964 transitions. Word has length 212 [2023-11-06 22:04:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:04:59,243 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 964 transitions. [2023-11-06 22:04:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-06 22:04:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 964 transitions. [2023-11-06 22:04:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-06 22:04:59,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:04:59,247 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:59,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:04:59,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:59,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:04:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash -949539252, now seen corresponding path program 1 times [2023-11-06 22:04:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:59,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089388722] [2023-11-06 22:04:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:59,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:04:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915633155] [2023-11-06 22:04:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:59,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:04:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:59,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:04:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:04:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:59,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:04:59,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1067 proven. 97 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2023-11-06 22:05:00,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 99 proven. 90 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2023-11-06 22:05:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:01,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089388722] [2023-11-06 22:05:01,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915633155] [2023-11-06 22:05:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915633155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:01,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-11-06 22:05:01,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806583943] [2023-11-06 22:05:01,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:05:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:05:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:05:01,797 INFO L87 Difference]: Start difference. First operand 612 states and 964 transitions. Second operand has 27 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 7 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 3 states have call predecessors, (54), 7 states have call successors, (54) [2023-11-06 22:05:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:04,728 INFO L93 Difference]: Finished difference Result 1418 states and 2124 transitions. [2023-11-06 22:05:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-06 22:05:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 7 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 3 states have call predecessors, (54), 7 states have call successors, (54) Word has length 212 [2023-11-06 22:05:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:04,737 INFO L225 Difference]: With dead ends: 1418 [2023-11-06 22:05:04,737 INFO L226 Difference]: Without dead ends: 867 [2023-11-06 22:05:04,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2023-11-06 22:05:04,743 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 576 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:04,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 518 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:05:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-06 22:05:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 696. [2023-11-06 22:05:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 436 states have (on average 1.268348623853211) internal successors, (553), 436 states have internal predecessors, (553), 231 states have call successors, (231), 28 states have call predecessors, (231), 28 states have return successors, (231), 231 states have call predecessors, (231), 231 states have call successors, (231) [2023-11-06 22:05:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2023-11-06 22:05:04,889 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 212 [2023-11-06 22:05:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:04,890 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2023-11-06 22:05:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 7 states have call successors, (54), 4 states have call predecessors, (54), 6 states have return successors, (54), 3 states have call predecessors, (54), 7 states have call successors, (54) [2023-11-06 22:05:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2023-11-06 22:05:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 22:05:04,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:04,894 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:05:04,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:05,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:05,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:05,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash 771514647, now seen corresponding path program 1 times [2023-11-06 22:05:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:05,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036594724] [2023-11-06 22:05:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:05,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:05,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660912625] [2023-11-06 22:05:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:05,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:05,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:05,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:05,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f69d85-5408-4e14-b3d5-3c31e4c043d7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:05:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:05,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-06 22:05:05,547 INFO L285 TraceCheckSpWp]: Computing forward predicates...