./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 389e5122d2a896fa997dc3e746e2063bdab378065edf7fbb3d476f6d5f7b2736 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:51,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:51,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:08:51,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:51,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:51,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:51,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:51,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:51,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:51,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:51,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:51,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:51,760 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:51,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:51,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:08:51,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:51,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:51,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:51,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:51,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:08:51,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:51,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:08:51,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:51,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:08:51,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:51,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:51,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:51,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:51,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:51,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:51,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:51,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:08:51,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:51,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:51,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:51,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:08:51,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:51,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:51,787 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:51,787 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_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389e5122d2a896fa997dc3e746e2063bdab378065edf7fbb3d476f6d5f7b2736 [2023-11-12 02:08:52,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:52,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:52,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:52,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:52,115 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:52,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i [2023-11-12 02:08:55,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:55,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:55,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i [2023-11-12 02:08:55,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/data/44e36042a/4fffbc2b021f4733979fa35e37d13514/FLAG8bf774621 [2023-11-12 02:08:55,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/data/44e36042a/4fffbc2b021f4733979fa35e37d13514 [2023-11-12 02:08:55,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:55,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:55,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:55,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:55,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:55,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:55" (1/1) ... [2023-11-12 02:08:55,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e861e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:55, skipping insertion in model container [2023-11-12 02:08:55,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:55" (1/1) ... [2023-11-12 02:08:55,760 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:55,924 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_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i[919,932] [2023-11-12 02:08:56,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:56,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:56,053 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_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i[919,932] [2023-11-12 02:08:56,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:56,151 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:56,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56 WrapperNode [2023-11-12 02:08:56,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:56,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:56,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:56,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:56,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,235 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 328 [2023-11-12 02:08:56,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:56,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:56,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:56,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:56,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:56,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:56,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:56,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:56,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (1/1) ... [2023-11-12 02:08:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:56,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:56,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:56,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:08:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:08:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:56,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:56,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:56,621 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:56,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:57,413 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:57,422 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:57,422 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:08:57,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:57 BoogieIcfgContainer [2023-11-12 02:08:57,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:57,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:57,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:57,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:57,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:55" (1/3) ... [2023-11-12 02:08:57,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d695d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:57, skipping insertion in model container [2023-11-12 02:08:57,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:56" (2/3) ... [2023-11-12 02:08:57,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d695d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:57, skipping insertion in model container [2023-11-12 02:08:57,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:57" (3/3) ... [2023-11-12 02:08:57,436 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-16.i [2023-11-12 02:08:57,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:57,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:08:57,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:57,526 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1aee503f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:57,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:08:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 02:08:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-12 02:08:57,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:57,560 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:57,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:57,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1518301800, now seen corresponding path program 1 times [2023-11-12 02:08:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:57,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458840915] [2023-11-12 02:08:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458840915] [2023-11-12 02:08:58,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:08:58,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704185692] [2023-11-12 02:08:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:58,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:58,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:58,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:58,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:08:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:58,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:08:58,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2023-11-12 02:08:58,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:58,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704185692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:58,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:58,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238663748] [2023-11-12 02:08:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:58,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:08:58,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:08:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:08:58,619 INFO L87 Difference]: Start difference. First operand has 137 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:08:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:58,674 INFO L93 Difference]: Finished difference Result 267 states and 489 transitions. [2023-11-12 02:08:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:08:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 335 [2023-11-12 02:08:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:58,688 INFO L225 Difference]: With dead ends: 267 [2023-11-12 02:08:58,688 INFO L226 Difference]: Without dead ends: 133 [2023-11-12 02:08:58,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:08:58,698 INFO L413 NwaCegarLoop]: 213 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, 213 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 [2023-11-12 02:08:58,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:08:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-12 02:08:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-12 02:08:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.355263157894737) internal successors, (103), 76 states have internal predecessors, (103), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 02:08:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 213 transitions. [2023-11-12 02:08:58,776 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 213 transitions. Word has length 335 [2023-11-12 02:08:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:58,777 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 213 transitions. [2023-11-12 02:08:58,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:08:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 213 transitions. [2023-11-12 02:08:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-12 02:08:58,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:58,788 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:58,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:58,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:08:58,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:58,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2132581722, now seen corresponding path program 1 times [2023-11-12 02:08:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:58,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439428605] [2023-11-12 02:08:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:59,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:59,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287507335] [2023-11-12 02:08:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:59,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:59,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:59,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:59,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:08:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:59,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:59,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-12 02:08:59,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:59,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439428605] [2023-11-12 02:08:59,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:59,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287507335] [2023-11-12 02:08:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287507335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:59,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:59,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806797332] [2023-11-12 02:08:59,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:59,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:59,533 INFO L87 Difference]: Start difference. First operand 133 states and 213 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:08:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:59,811 INFO L93 Difference]: Finished difference Result 404 states and 636 transitions. [2023-11-12 02:08:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:08:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 335 [2023-11-12 02:08:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:59,829 INFO L225 Difference]: With dead ends: 404 [2023-11-12 02:08:59,829 INFO L226 Difference]: Without dead ends: 274 [2023-11-12 02:08:59,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:08:59,836 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 267 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:59,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 710 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:08:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-12 02:08:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 209. [2023-11-12 02:08:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 149 states have (on average 1.476510067114094) internal successors, (220), 150 states have internal predecessors, (220), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-12 02:08:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 334 transitions. [2023-11-12 02:08:59,910 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 334 transitions. Word has length 335 [2023-11-12 02:08:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:59,916 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 334 transitions. [2023-11-12 02:08:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:08:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 334 transitions. [2023-11-12 02:08:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-12 02:08:59,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:59,927 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:59,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:00,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:00,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:00,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2021836964, now seen corresponding path program 1 times [2023-11-12 02:09:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639967485] [2023-11-12 02:09:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:00,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:00,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123543445] [2023-11-12 02:09:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:00,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:00,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:00,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:00,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:09:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:00,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:09:00,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-12 02:09:00,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639967485] [2023-11-12 02:09:00,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123543445] [2023-11-12 02:09:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123543445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:00,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271662294] [2023-11-12 02:09:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:00,682 INFO L87 Difference]: Start difference. First operand 209 states and 334 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:00,935 INFO L93 Difference]: Finished difference Result 515 states and 809 transitions. [2023-11-12 02:09:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 335 [2023-11-12 02:09:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:00,940 INFO L225 Difference]: With dead ends: 515 [2023-11-12 02:09:00,940 INFO L226 Difference]: Without dead ends: 309 [2023-11-12 02:09:00,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:00,945 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 357 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:00,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1120 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:09:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-12 02:09:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 286. [2023-11-12 02:09:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 220 states have (on average 1.5045454545454546) internal successors, (331), 222 states have internal predecessors, (331), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-12 02:09:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 453 transitions. [2023-11-12 02:09:01,007 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 453 transitions. Word has length 335 [2023-11-12 02:09:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:01,010 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 453 transitions. [2023-11-12 02:09:01,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 453 transitions. [2023-11-12 02:09:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-12 02:09:01,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:01,014 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:01,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:01,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:01,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1455481882, now seen corresponding path program 1 times [2023-11-12 02:09:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825655159] [2023-11-12 02:09:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:01,317 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885148178] [2023-11-12 02:09:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:01,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:01,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:01,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:01,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:09:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:01,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:09:01,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-12 02:09:02,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825655159] [2023-11-12 02:09:02,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885148178] [2023-11-12 02:09:02,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885148178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:02,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:02,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:02,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598948248] [2023-11-12 02:09:02,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:02,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:02,202 INFO L87 Difference]: Start difference. First operand 286 states and 453 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:02,636 INFO L93 Difference]: Finished difference Result 810 states and 1289 transitions. [2023-11-12 02:09:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:09:02,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 335 [2023-11-12 02:09:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:02,648 INFO L225 Difference]: With dead ends: 810 [2023-11-12 02:09:02,648 INFO L226 Difference]: Without dead ends: 527 [2023-11-12 02:09:02,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:09:02,657 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 401 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:02,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1025 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:09:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-12 02:09:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 383. [2023-11-12 02:09:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 317 states have (on average 1.555205047318612) internal successors, (493), 319 states have internal predecessors, (493), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-12 02:09:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 615 transitions. [2023-11-12 02:09:02,706 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 615 transitions. Word has length 335 [2023-11-12 02:09:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:02,707 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 615 transitions. [2023-11-12 02:09:02,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 615 transitions. [2023-11-12 02:09:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-12 02:09:02,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:02,715 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:02,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:02,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:02,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:02,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2100345960, now seen corresponding path program 1 times [2023-11-12 02:09:02,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:02,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676710021] [2023-11-12 02:09:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:02,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:02,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162978440] [2023-11-12 02:09:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:02,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:02,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:02,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:03,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:09:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:03,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 02:09:03,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2282 proven. 570 refuted. 0 times theorem prover too weak. 3088 trivial. 0 not checked. [2023-11-12 02:09:11,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676710021] [2023-11-12 02:09:16,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162978440] [2023-11-12 02:09:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162978440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:16,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-12 02:09:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566772405] [2023-11-12 02:09:16,978 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:09:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:09:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:09:16,981 INFO L87 Difference]: Start difference. First operand 383 states and 615 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 6 states have call successors, (55), 6 states have call predecessors, (55), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) [2023-11-12 02:09:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:26,801 INFO L93 Difference]: Finished difference Result 999 states and 1590 transitions. [2023-11-12 02:09:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:09:26,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 6 states have call successors, (55), 6 states have call predecessors, (55), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) Word has length 335 [2023-11-12 02:09:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:26,808 INFO L225 Difference]: With dead ends: 999 [2023-11-12 02:09:26,808 INFO L226 Difference]: Without dead ends: 619 [2023-11-12 02:09:26,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=493, Invalid=1313, Unknown=0, NotChecked=0, Total=1806 [2023-11-12 02:09:26,811 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 184 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:26,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1731 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-12 02:09:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-11-12 02:09:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 613. [2023-11-12 02:09:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 483 states have (on average 1.5196687370600415) internal successors, (734), 486 states have internal predecessors, (734), 118 states have call successors, (118), 11 states have call predecessors, (118), 11 states have return successors, (118), 115 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-12 02:09:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 970 transitions. [2023-11-12 02:09:27,015 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 970 transitions. Word has length 335 [2023-11-12 02:09:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:27,017 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 970 transitions. [2023-11-12 02:09:27,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 6 states have call successors, (55), 6 states have call predecessors, (55), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) [2023-11-12 02:09:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 970 transitions. [2023-11-12 02:09:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-12 02:09:27,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:27,021 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:27,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:27,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:27,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:27,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash 314547847, now seen corresponding path program 1 times [2023-11-12 02:09:27,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:27,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267401543] [2023-11-12 02:09:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:27,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994709514] [2023-11-12 02:09:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:27,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:27,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:27,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:09:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:09:27,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-12 02:09:28,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:28,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267401543] [2023-11-12 02:09:28,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:28,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994709514] [2023-11-12 02:09:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994709514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:28,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:28,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:09:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223530406] [2023-11-12 02:09:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:28,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:28,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:09:28,079 INFO L87 Difference]: Start difference. First operand 613 states and 970 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:28,561 INFO L93 Difference]: Finished difference Result 1312 states and 2072 transitions. [2023-11-12 02:09:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 336 [2023-11-12 02:09:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:28,568 INFO L225 Difference]: With dead ends: 1312 [2023-11-12 02:09:28,568 INFO L226 Difference]: Without dead ends: 702 [2023-11-12 02:09:28,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:28,571 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 162 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:28,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 778 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:09:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-11-12 02:09:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 571. [2023-11-12 02:09:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 441 states have (on average 1.5011337868480725) internal successors, (662), 444 states have internal predecessors, (662), 118 states have call successors, (118), 11 states have call predecessors, (118), 11 states have return successors, (118), 115 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-12 02:09:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 898 transitions. [2023-11-12 02:09:28,726 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 898 transitions. Word has length 336 [2023-11-12 02:09:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 898 transitions. [2023-11-12 02:09:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-11-12 02:09:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 898 transitions. [2023-11-12 02:09:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-12 02:09:28,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:28,730 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:28,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:28,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:28,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1379486941, now seen corresponding path program 1 times [2023-11-12 02:09:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855829944] [2023-11-12 02:09:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:29,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:29,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599581565] [2023-11-12 02:09:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:29,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:29,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:09:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:09:29,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2023-11-12 02:09:30,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855829944] [2023-11-12 02:09:30,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:30,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599581565] [2023-11-12 02:09:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599581565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952744366] [2023-11-12 02:09:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:30,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:30,081 INFO L87 Difference]: Start difference. First operand 571 states and 898 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:09:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:31,542 INFO L93 Difference]: Finished difference Result 1569 states and 2479 transitions. [2023-11-12 02:09:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:09:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 336 [2023-11-12 02:09:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:31,552 INFO L225 Difference]: With dead ends: 1569 [2023-11-12 02:09:31,552 INFO L226 Difference]: Without dead ends: 1189 [2023-11-12 02:09:31,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:31,556 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 511 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1177 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:09:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2023-11-12 02:09:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1176. [2023-11-12 02:09:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 904 states have (on average 1.4944690265486726) internal successors, (1351), 915 states have internal predecessors, (1351), 250 states have call successors, (250), 21 states have call predecessors, (250), 21 states have return successors, (250), 239 states have call predecessors, (250), 250 states have call successors, (250) [2023-11-12 02:09:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1851 transitions. [2023-11-12 02:09:31,801 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1851 transitions. Word has length 336 [2023-11-12 02:09:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:31,802 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1851 transitions. [2023-11-12 02:09:31,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:09:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1851 transitions. [2023-11-12 02:09:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-12 02:09:31,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:31,806 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:31,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-12 02:09:32,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:32,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1894412001, now seen corresponding path program 1 times [2023-11-12 02:09:32,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:32,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667429119] [2023-11-12 02:09:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:32,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311237810] [2023-11-12 02:09:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:32,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:32,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:32,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:09:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:09:32,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2023-11-12 02:09:33,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:33,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667429119] [2023-11-12 02:09:33,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311237810] [2023-11-12 02:09:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311237810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9821367] [2023-11-12 02:09:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:33,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:33,741 INFO L87 Difference]: Start difference. First operand 1176 states and 1851 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:09:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:34,959 INFO L93 Difference]: Finished difference Result 3247 states and 5106 transitions. [2023-11-12 02:09:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 336 [2023-11-12 02:09:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:34,987 INFO L225 Difference]: With dead ends: 3247 [2023-11-12 02:09:34,987 INFO L226 Difference]: Without dead ends: 2078 [2023-11-12 02:09:34,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:34,996 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 459 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:34,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 845 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:09:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-12 02:09:35,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2068. [2023-11-12 02:09:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 1594 states have (on average 1.4855708908406524) internal successors, (2368), 1612 states have internal predecessors, (2368), 435 states have call successors, (435), 38 states have call predecessors, (435), 38 states have return successors, (435), 417 states have call predecessors, (435), 435 states have call successors, (435) [2023-11-12 02:09:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3238 transitions. [2023-11-12 02:09:35,475 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3238 transitions. Word has length 336 [2023-11-12 02:09:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:35,476 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 3238 transitions. [2023-11-12 02:09:35,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-11-12 02:09:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3238 transitions. [2023-11-12 02:09:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-12 02:09:35,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:35,480 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:35,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:35,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:35,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1317447327, now seen corresponding path program 1 times [2023-11-12 02:09:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868198645] [2023-11-12 02:09:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:35,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:35,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296336593] [2023-11-12 02:09:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:35,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:35,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:35,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:35,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ddbbe-7025-46e5-85ed-18fdf4ea63bf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:09:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:36,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 02:09:36,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 1436 proven. 141 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2023-11-12 02:09:39,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-11-12 02:09:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868198645] [2023-11-12 02:09:41,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296336593] [2023-11-12 02:09:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296336593] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:41,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:41,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2023-11-12 02:09:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447679596] [2023-11-12 02:09:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:09:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:09:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:09:41,595 INFO L87 Difference]: Start difference. First operand 2068 states and 3238 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55)