./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85317af79e2001c8e1b318bf68e7fdcd0f9e26e9789b5022a63d412f2c352aaf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:27,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:27,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:27,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:27,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:27,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:27,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:27,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:27,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:27,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:27,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:27,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:27,307 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:27,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:27,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:27,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:27,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:27,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:27,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:27,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:27,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:27,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:27,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:27,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:27,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:27,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:27,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:27,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:27,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:27,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:27,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:27,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:27,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:27,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:27,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:27,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:27,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:27,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:27,321 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:27,321 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_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85317af79e2001c8e1b318bf68e7fdcd0f9e26e9789b5022a63d412f2c352aaf [2023-11-19 07:40:27,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:27,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:27,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:27,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:27,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:27,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-11-19 07:40:30,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:31,141 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:31,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-11-19 07:40:31,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/data/f362c7554/62fb49894074469eb0f846f824714cc2/FLAG3b63f69d6 [2023-11-19 07:40:31,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/data/f362c7554/62fb49894074469eb0f846f824714cc2 [2023-11-19 07:40:31,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:31,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:31,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:31,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:31,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:31,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79056967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31, skipping insertion in model container [2023-11-19 07:40:31,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:31,403 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_263e33f3-075b-4842-a6cb-6588c82e13de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i[916,929] [2023-11-19 07:40:31,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:31,741 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:31,754 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_263e33f3-075b-4842-a6cb-6588c82e13de/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i[916,929] [2023-11-19 07:40:31,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:31,856 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:31,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31 WrapperNode [2023-11-19 07:40:31,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:31,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:31,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:31,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:31,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,985 INFO L138 Inliner]: procedures = 26, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 921 [2023-11-19 07:40:31,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:31,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:31,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:31,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:31,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:32,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:32,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:32,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:32,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:32,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:32,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:40:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:40:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:32,352 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:32,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:33,963 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:33,985 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:33,986 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:40:33,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:33 BoogieIcfgContainer [2023-11-19 07:40:33,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:33,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:33,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:34,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:34,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:31" (1/3) ... [2023-11-19 07:40:34,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e6282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:34, skipping insertion in model container [2023-11-19 07:40:34,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (2/3) ... [2023-11-19 07:40:34,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e6282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:34, skipping insertion in model container [2023-11-19 07:40:34,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:33" (3/3) ... [2023-11-19 07:40:34,003 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-11-19 07:40:34,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:34,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:34,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:34,121 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;@46c0f4b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:34,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 235 states have (on average 1.6170212765957446) internal successors, (380), 236 states have internal predecessors, (380), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-19 07:40:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:40:34,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:34,193 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 537221188, now seen corresponding path program 1 times [2023-11-19 07:40:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588827515] [2023-11-19 07:40:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:34,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588827515] [2023-11-19 07:40:34,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:40:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681701965] [2023-11-19 07:40:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:34,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:34,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:40:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:40:35,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 25088 trivial. 0 not checked. [2023-11-19 07:40:35,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681701965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924823801] [2023-11-19 07:40:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:35,608 INFO L87 Difference]: Start difference. First operand has 351 states, 235 states have (on average 1.6170212765957446) internal successors, (380), 236 states have internal predecessors, (380), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) [2023-11-19 07:40:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:35,694 INFO L93 Difference]: Finished difference Result 695 states and 1319 transitions. [2023-11-19 07:40:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:35,696 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) Word has length 733 [2023-11-19 07:40:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:35,711 INFO L225 Difference]: With dead ends: 695 [2023-11-19 07:40:35,714 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 07:40:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:35,731 INFO L413 NwaCegarLoop]: 599 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, 599 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:35,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 07:40:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-19 07:40:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 232 states have (on average 1.6077586206896552) internal successors, (373), 232 states have internal predecessors, (373), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-19 07:40:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 599 transitions. [2023-11-19 07:40:35,867 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 599 transitions. Word has length 733 [2023-11-19 07:40:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:35,868 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 599 transitions. [2023-11-19 07:40:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) [2023-11-19 07:40:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 599 transitions. [2023-11-19 07:40:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:40:35,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:35,892 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:40:36,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1126236534, now seen corresponding path program 1 times [2023-11-19 07:40:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774997696] [2023-11-19 07:40:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:36,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191165747] [2023-11-19 07:40:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:36,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:36,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:40:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:36,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-11-19 07:40:37,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:37,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774997696] [2023-11-19 07:40:37,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191165747] [2023-11-19 07:40:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191165747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:37,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:37,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594052285] [2023-11-19 07:40:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:37,128 INFO L87 Difference]: Start difference. First operand 347 states and 599 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:40:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:37,627 INFO L93 Difference]: Finished difference Result 1470 states and 2565 transitions. [2023-11-19 07:40:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 733 [2023-11-19 07:40:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:37,653 INFO L225 Difference]: With dead ends: 1470 [2023-11-19 07:40:37,653 INFO L226 Difference]: Without dead ends: 1126 [2023-11-19 07:40:37,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:37,658 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 1262 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:37,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 3078 Invalid, 126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:40:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-19 07:40:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1118. [2023-11-19 07:40:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 811 states have (on average 1.6670776818742294) internal successors, (1352), 813 states have internal predecessors, (1352), 302 states have call successors, (302), 4 states have call predecessors, (302), 4 states have return successors, (302), 300 states have call predecessors, (302), 302 states have call successors, (302) [2023-11-19 07:40:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1956 transitions. [2023-11-19 07:40:37,953 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1956 transitions. Word has length 733 [2023-11-19 07:40:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:37,959 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1956 transitions. [2023-11-19 07:40:37,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:40:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1956 transitions. [2023-11-19 07:40:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:40:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:37,993 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:38,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:38,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:38,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:38,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2111999560, now seen corresponding path program 1 times [2023-11-19 07:40:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:38,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157897305] [2023-11-19 07:40:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:38,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525007649] [2023-11-19 07:40:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:38,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:38,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:40:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:38,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:38,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-11-19 07:40:39,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157897305] [2023-11-19 07:40:39,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525007649] [2023-11-19 07:40:39,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525007649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:39,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134104393] [2023-11-19 07:40:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:39,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:39,022 INFO L87 Difference]: Start difference. First operand 1118 states and 1956 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:40:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:39,202 INFO L93 Difference]: Finished difference Result 3041 states and 5318 transitions. [2023-11-19 07:40:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 733 [2023-11-19 07:40:39,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:39,222 INFO L225 Difference]: With dead ends: 3041 [2023-11-19 07:40:39,222 INFO L226 Difference]: Without dead ends: 1926 [2023-11-19 07:40:39,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:39,229 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 357 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:39,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1967 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-11-19 07:40:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1922. [2023-11-19 07:40:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1417 states have (on average 1.6669019054340155) internal successors, (2362), 1423 states have internal predecessors, (2362), 496 states have call successors, (496), 8 states have call predecessors, (496), 8 states have return successors, (496), 490 states have call predecessors, (496), 496 states have call successors, (496) [2023-11-19 07:40:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 3354 transitions. [2023-11-19 07:40:39,507 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 3354 transitions. Word has length 733 [2023-11-19 07:40:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:39,509 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 3354 transitions. [2023-11-19 07:40:39,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:40:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 3354 transitions. [2023-11-19 07:40:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:40:39,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:39,520 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:39,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:39,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:39,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:39,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash -582573062, now seen corresponding path program 1 times [2023-11-19 07:40:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937113258] [2023-11-19 07:40:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:39,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886877050] [2023-11-19 07:40:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:39,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:39,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:39,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:40:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:40,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:40:40,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 7938 proven. 63 refuted. 0 times theorem prover too weak. 17311 trivial. 0 not checked. [2023-11-19 07:40:41,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 273 proven. 63 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-11-19 07:40:42,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937113258] [2023-11-19 07:40:42,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886877050] [2023-11-19 07:40:42,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886877050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:42,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:42,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-19 07:40:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639398712] [2023-11-19 07:40:42,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:42,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:40:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:40:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=174, Unknown=1, NotChecked=0, Total=240 [2023-11-19 07:40:42,770 INFO L87 Difference]: Start difference. First operand 1922 states and 3354 transitions. Second operand has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-11-19 07:41:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:02,950 INFO L93 Difference]: Finished difference Result 19712 states and 34218 transitions. [2023-11-19 07:41:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-19 07:41:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) Word has length 733 [2023-11-19 07:41:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:03,103 INFO L225 Difference]: With dead ends: 19712 [2023-11-19 07:41:03,103 INFO L226 Difference]: Without dead ends: 17793 [2023-11-19 07:41:03,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1458 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=924, Invalid=3084, Unknown=24, NotChecked=0, Total=4032 [2023-11-19 07:41:03,121 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 4764 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 5766 mSolverCounterSat, 2915 mSolverCounterUnsat, 1189 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 9870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2915 IncrementalHoareTripleChecker+Valid, 5766 IncrementalHoareTripleChecker+Invalid, 1189 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:03,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 6510 Invalid, 9870 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2915 Valid, 5766 Invalid, 1189 Unknown, 0 Unchecked, 16.9s Time] [2023-11-19 07:41:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17793 states. [2023-11-19 07:41:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17793 to 5781. [2023-11-19 07:41:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5781 states, 4386 states have (on average 1.6903784769721841) internal successors, (7414), 4408 states have internal predecessors, (7414), 1368 states have call successors, (1368), 26 states have call predecessors, (1368), 26 states have return successors, (1368), 1346 states have call predecessors, (1368), 1368 states have call successors, (1368) [2023-11-19 07:41:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 10150 transitions. [2023-11-19 07:41:04,729 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 10150 transitions. Word has length 733 [2023-11-19 07:41:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:04,732 INFO L495 AbstractCegarLoop]: Abstraction has 5781 states and 10150 transitions. [2023-11-19 07:41:04,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-11-19 07:41:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 10150 transitions. [2023-11-19 07:41:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:41:04,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:04,749 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:04,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:04,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:04,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2026214396, now seen corresponding path program 1 times [2023-11-19 07:41:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453629265] [2023-11-19 07:41:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:05,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:05,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299732563] [2023-11-19 07:41:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:05,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:41:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:05,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:05,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 8212 proven. 66 refuted. 0 times theorem prover too weak. 17034 trivial. 0 not checked. [2023-11-19 07:41:05,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 270 proven. 66 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-11-19 07:41:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453629265] [2023-11-19 07:41:06,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:06,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299732563] [2023-11-19 07:41:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299732563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:06,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:41:06,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:41:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104113541] [2023-11-19 07:41:06,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:06,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:41:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:41:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:41:06,482 INFO L87 Difference]: Start difference. First operand 5781 states and 10150 transitions. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-11-19 07:41:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:07,656 INFO L93 Difference]: Finished difference Result 11619 states and 20355 transitions. [2023-11-19 07:41:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:41:07,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 733 [2023-11-19 07:41:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:07,692 INFO L225 Difference]: With dead ends: 11619 [2023-11-19 07:41:07,693 INFO L226 Difference]: Without dead ends: 5841 [2023-11-19 07:41:07,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1458 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:41:07,713 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 411 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:07,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1207 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:41:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2023-11-19 07:41:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 5789. [2023-11-19 07:41:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5789 states, 4392 states have (on average 1.6839708561020037) internal successors, (7396), 4414 states have internal predecessors, (7396), 1368 states have call successors, (1368), 28 states have call predecessors, (1368), 28 states have return successors, (1368), 1346 states have call predecessors, (1368), 1368 states have call successors, (1368) [2023-11-19 07:41:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5789 states to 5789 states and 10132 transitions. [2023-11-19 07:41:08,599 INFO L78 Accepts]: Start accepts. Automaton has 5789 states and 10132 transitions. Word has length 733 [2023-11-19 07:41:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:08,601 INFO L495 AbstractCegarLoop]: Abstraction has 5789 states and 10132 transitions. [2023-11-19 07:41:08,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-11-19 07:41:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5789 states and 10132 transitions. [2023-11-19 07:41:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-19 07:41:08,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:08,619 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:08,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:08,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:08,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1708053122, now seen corresponding path program 1 times [2023-11-19 07:41:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008240644] [2023-11-19 07:41:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:08,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523577503] [2023-11-19 07:41:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:08,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:08,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:08,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:41:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:41:09,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-11-19 07:41:09,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008240644] [2023-11-19 07:41:09,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:09,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523577503] [2023-11-19 07:41:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523577503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:09,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984805850] [2023-11-19 07:41:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:09,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:09,598 INFO L87 Difference]: Start difference. First operand 5789 states and 10132 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:41:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:10,517 INFO L93 Difference]: Finished difference Result 16439 states and 28875 transitions. [2023-11-19 07:41:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 733 [2023-11-19 07:41:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:10,556 INFO L225 Difference]: With dead ends: 16439 [2023-11-19 07:41:10,556 INFO L226 Difference]: Without dead ends: 10533 [2023-11-19 07:41:10,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:10,577 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 362 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:10,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 2091 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10533 states. [2023-11-19 07:41:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10533 to 10507. [2023-11-19 07:41:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10507 states, 8318 states have (on average 1.708223130560231) internal successors, (14209), 8364 states have internal predecessors, (14209), 2136 states have call successors, (2136), 52 states have call predecessors, (2136), 52 states have return successors, (2136), 2090 states have call predecessors, (2136), 2136 states have call successors, (2136) [2023-11-19 07:41:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 18481 transitions. [2023-11-19 07:41:11,886 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 18481 transitions. Word has length 733 [2023-11-19 07:41:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:11,887 INFO L495 AbstractCegarLoop]: Abstraction has 10507 states and 18481 transitions. [2023-11-19 07:41:11,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-11-19 07:41:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 18481 transitions. [2023-11-19 07:41:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-19 07:41:11,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:11,912 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:11,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:12,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:41:12,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:12,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash -166001576, now seen corresponding path program 1 times [2023-11-19 07:41:12,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:12,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748288826] [2023-11-19 07:41:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:12,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852137918] [2023-11-19 07:41:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:12,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:12,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:12,319 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:12,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_263e33f3-075b-4842-a6cb-6588c82e13de/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:41:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:12,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:12,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 11362 proven. 111 refuted. 0 times theorem prover too weak. 13839 trivial. 0 not checked. [2023-11-19 07:41:13,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 225 proven. 111 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-11-19 07:41:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748288826] [2023-11-19 07:41:13,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852137918] [2023-11-19 07:41:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852137918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:13,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:41:13,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:41:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856046743] [2023-11-19 07:41:13,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:13,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:41:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:41:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:41:13,888 INFO L87 Difference]: Start difference. First operand 10507 states and 18481 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151)