./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/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 25dee156812923f4009aa29b92f2684a119b1400910c74d3234b2f21dc5fd6b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:55:49,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:55:49,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:55:49,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:55:49,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:55:49,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:55:49,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:55:49,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:55:49,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:55:49,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:55:49,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:55:49,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:55:49,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:55:49,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:55:49,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:55:49,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:55:49,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:55:49,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:55:49,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:55:49,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:55:49,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:55:49,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:55:49,758 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:55:49,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:55:49,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:55:49,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:55:49,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:55:49,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:55:49,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:49,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:55:49,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:55:49,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:55:49,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:55:49,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:55:49,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:55:49,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:55:49,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:55:49,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:55:49,765 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:55:49,765 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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25dee156812923f4009aa29b92f2684a119b1400910c74d3234b2f21dc5fd6b3 [2023-11-06 22:55:50,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:55:50,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:55:50,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:55:50,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:55:50,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:55:50,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2023-11-06 22:55:53,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:55:53,530 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:55:53,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2023-11-06 22:55:53,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/data/21c7d99d9/90bb947ac61746fe998912fc1637ecac/FLAGf8aa44f58 [2023-11-06 22:55:53,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/data/21c7d99d9/90bb947ac61746fe998912fc1637ecac [2023-11-06 22:55:53,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:55:53,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:55:53,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:53,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:55:53,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:55:53,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:53" (1/1) ... [2023-11-06 22:55:53,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3047727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:53, skipping insertion in model container [2023-11-06 22:55:53,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:53" (1/1) ... [2023-11-06 22:55:53,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:55:53,860 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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i[915,928] [2023-11-06 22:55:53,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:53,996 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:55:54,007 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_18e74201-09da-4b1d-879d-a34f3fbbc8bc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-56.i[915,928] [2023-11-06 22:55:54,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:54,081 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:55:54,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54 WrapperNode [2023-11-06 22:55:54,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:54,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:54,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:55:54,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:55:54,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,209 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 289 [2023-11-06 22:55:54,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:54,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:55:54,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:55:54,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:55:54,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:55:54,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:55:54,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:55:54,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:55:54,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (1/1) ... [2023-11-06 22:55:54,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:54,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:54,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:55:54,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:55:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:55:54,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:55:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:55:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:55:54,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:55:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:55:54,530 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:55:54,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:55:55,207 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:55:55,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:55:55,220 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:55:55,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:55 BoogieIcfgContainer [2023-11-06 22:55:55,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:55:55,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:55:55,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:55:55,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:55:55,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:53" (1/3) ... [2023-11-06 22:55:55,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e0411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:55, skipping insertion in model container [2023-11-06 22:55:55,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:54" (2/3) ... [2023-11-06 22:55:55,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405e0411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:55, skipping insertion in model container [2023-11-06 22:55:55,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:55" (3/3) ... [2023-11-06 22:55:55,239 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-56.i [2023-11-06 22:55:55,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:55:55,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:55:55,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:55,356 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;@755cea73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:55,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:55:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 70 states have internal predecessors, (93), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:55:55,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-06 22:55:55,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:55,417 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:55,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:55,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash 877872913, now seen corresponding path program 1 times [2023-11-06 22:55:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755080371] [2023-11-06 22:55:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755080371] [2023-11-06 22:55:55,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:55:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798356979] [2023-11-06 22:55:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:55,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:55,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:55,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:55:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:56,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:55:56,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2023-11-06 22:55:56,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:55:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798356979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:56,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:56,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:55:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91800984] [2023-11-06 22:55:56,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:55:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:55:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:55:56,400 INFO L87 Difference]: Start difference. First operand has 126 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 70 states have internal predecessors, (93), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-06 22:55:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:56,458 INFO L93 Difference]: Finished difference Result 245 states and 450 transitions. [2023-11-06 22:55:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:55:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) Word has length 325 [2023-11-06 22:55:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:56,471 INFO L225 Difference]: With dead ends: 245 [2023-11-06 22:55:56,471 INFO L226 Difference]: Without dead ends: 122 [2023-11-06 22:55:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 324 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 22:55:56,481 INFO L413 NwaCegarLoop]: 194 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, 194 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 22:55:56,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:55:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-06 22:55:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-11-06 22:55:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:55:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2023-11-06 22:55:56,590 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 325 [2023-11-06 22:55:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:56,593 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2023-11-06 22:55:56,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 2 states have call successors, (54) [2023-11-06 22:55:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2023-11-06 22:55:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-06 22:55:56,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:56,605 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:56,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:55:56,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:56,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 431701005, now seen corresponding path program 1 times [2023-11-06 22:55:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:56,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629195367] [2023-11-06 22:55:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:56,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:55:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737837693] [2023-11-06 22:55:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:56,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:56,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:55:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:55:57,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 845 proven. 147 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2023-11-06 22:55:58,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:55:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 5565 trivial. 0 not checked. [2023-11-06 22:55:58,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629195367] [2023-11-06 22:55:58,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:55:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737837693] [2023-11-06 22:55:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737837693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:55:58,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:55:58,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:55:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945205015] [2023-11-06 22:55:58,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:55:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:58,454 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-06 22:55:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:58,898 INFO L93 Difference]: Finished difference Result 247 states and 390 transitions. [2023-11-06 22:55:58,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:55:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 325 [2023-11-06 22:55:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:58,908 INFO L225 Difference]: With dead ends: 247 [2023-11-06 22:55:58,910 INFO L226 Difference]: Without dead ends: 128 [2023-11-06 22:55:58,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 642 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:55:58,917 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 50 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 294 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:55:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-06 22:55:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2023-11-06 22:55:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 69 states have internal predecessors, (88), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:55:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 196 transitions. [2023-11-06 22:55:58,976 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 196 transitions. Word has length 325 [2023-11-06 22:55:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:58,978 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 196 transitions. [2023-11-06 22:55:58,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-06 22:55:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 196 transitions. [2023-11-06 22:55:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-06 22:55:58,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:58,985 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:59,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:55:59,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:59,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:59,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1241047631, now seen corresponding path program 1 times [2023-11-06 22:55:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:59,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060854522] [2023-11-06 22:55:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:59,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:55:59,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868216638] [2023-11-06 22:55:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:59,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:55:59,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:59,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:55:59,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:55:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:59,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:55:59,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:55:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2023-11-06 22:55:59,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:55:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060854522] [2023-11-06 22:55:59,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:55:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868216638] [2023-11-06 22:55:59,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868216638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:59,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:55:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805562572] [2023-11-06 22:55:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:55:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:55:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:55:59,726 INFO L87 Difference]: Start difference. First operand 126 states and 196 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-06 22:55:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:59,836 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2023-11-06 22:55:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:55:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) Word has length 325 [2023-11-06 22:55:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:59,842 INFO L225 Difference]: With dead ends: 279 [2023-11-06 22:55:59,842 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:55:59,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:59,844 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 72 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:59,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 715 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:55:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:55:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2023-11-06 22:55:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 58 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-06 22:55:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 228 transitions. [2023-11-06 22:55:59,899 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 228 transitions. Word has length 325 [2023-11-06 22:55:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:59,900 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 228 transitions. [2023-11-06 22:55:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 1 states have call predecessors, (54), 1 states have call successors, (54) [2023-11-06 22:55:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 228 transitions. [2023-11-06 22:55:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-06 22:55:59,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:59,907 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:59,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:56:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:56:00,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:00,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1942112209, now seen corresponding path program 1 times [2023-11-06 22:56:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760714856] [2023-11-06 22:56:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:56:00,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599979031] [2023-11-06 22:56:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:00,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:00,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:00,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e74201-09da-4b1d-879d-a34f3fbbc8bc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:56:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-06 22:56:00,626 INFO L285 TraceCheckSpWp]: Computing forward predicates...