./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/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_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/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_12e69b5e-b457-4922-8f39-df133c27771d/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 01ae84b388e9ca8b43306964b476cbfcbf248ea3ef49e8ce09f1cf12eee47283 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:26,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:26,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:46:26,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:26,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:26,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:26,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:26,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:26,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:26,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:26,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:26,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:26,520 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:26,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:26,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:26,522 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:26,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:26,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:26,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:26,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:26,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:26,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:26,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:26,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:26,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:26,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:26,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:26,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:26,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:26,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:26,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:26,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:26,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:26,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:26,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:26,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:26,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:26,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:26,536 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:26,536 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_12e69b5e-b457-4922-8f39-df133c27771d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ae84b388e9ca8b43306964b476cbfcbf248ea3ef49e8ce09f1cf12eee47283 [2023-11-19 07:46:26,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:26,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:26,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:26,847 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:26,848 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:26,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i [2023-11-19 07:46:30,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:30,540 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:30,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i [2023-11-19 07:46:30,557 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/data/ffe00f914/57da69c0f6ac4759990050d9a7d9f1e8/FLAGbed59a539 [2023-11-19 07:46:30,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/data/ffe00f914/57da69c0f6ac4759990050d9a7d9f1e8 [2023-11-19 07:46:30,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:30,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:30,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:30,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:30,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:30,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:30" (1/1) ... [2023-11-19 07:46:30,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2141794a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:30, skipping insertion in model container [2023-11-19 07:46:30,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:30" (1/1) ... [2023-11-19 07:46:30,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:30,878 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_12e69b5e-b457-4922-8f39-df133c27771d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i[919,932] [2023-11-19 07:46:30,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:30,999 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:31,013 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_12e69b5e-b457-4922-8f39-df133c27771d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i[919,932] [2023-11-19 07:46:31,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:31,111 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:31,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31 WrapperNode [2023-11-19 07:46:31,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:31,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:31,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:31,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:31,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,227 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-19 07:46:31,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:31,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:31,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:31,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:31,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:31,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:31,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:31,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:31,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (1/1) ... [2023-11-19 07:46:31,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:31,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:31,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:31,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:46:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:46:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:31,519 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:31,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:32,151 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:32,166 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:32,166 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:46:32,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:32 BoogieIcfgContainer [2023-11-19 07:46:32,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:32,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:32,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:32,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:32,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:30" (1/3) ... [2023-11-19 07:46:32,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c593f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:32, skipping insertion in model container [2023-11-19 07:46:32,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:31" (2/3) ... [2023-11-19 07:46:32,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c593f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:32, skipping insertion in model container [2023-11-19 07:46:32,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:32" (3/3) ... [2023-11-19 07:46:32,187 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-58.i [2023-11-19 07:46:32,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:32,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:46:32,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:32,320 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;@4378b04f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:32,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:46:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:46:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-19 07:46:32,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:32,363 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:32,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:32,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash -292268618, now seen corresponding path program 1 times [2023-11-19 07:46:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:32,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064849624] [2023-11-19 07:46:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064849624] [2023-11-19 07:46:32,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:46:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603500733] [2023-11-19 07:46:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:32,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:32,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:33,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:46:33,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2023-11-19 07:46:33,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:33,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603500733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:33,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:33,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629488776] [2023-11-19 07:46:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:33,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:33,273 INFO L87 Difference]: Start difference. First operand has 106 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:46:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:33,323 INFO L93 Difference]: Finished difference Result 205 states and 375 transitions. [2023-11-19 07:46:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 231 [2023-11-19 07:46:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:33,334 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:46:33,334 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:46:33,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 230 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 07:46:33,343 INFO L413 NwaCegarLoop]: 164 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, 164 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 07:46:33,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:46:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-19 07:46:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:46:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 164 transitions. [2023-11-19 07:46:33,403 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 164 transitions. Word has length 231 [2023-11-19 07:46:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:33,404 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 164 transitions. [2023-11-19 07:46:33,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:46:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 164 transitions. [2023-11-19 07:46:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-19 07:46:33,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:33,411 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:33,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:46:33,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:33,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:33,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:33,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1824307956, now seen corresponding path program 1 times [2023-11-19 07:46:33,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304110505] [2023-11-19 07:46:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:33,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:33,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422984249] [2023-11-19 07:46:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:33,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:33,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:33,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:34,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:34,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 988 proven. 24 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-19 07:46:34,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 84 proven. 24 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2023-11-19 07:46:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304110505] [2023-11-19 07:46:34,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422984249] [2023-11-19 07:46:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422984249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:34,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:34,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:46:34,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398880709] [2023-11-19 07:46:34,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:46:34,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:46:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:34,508 INFO L87 Difference]: Start difference. First operand 102 states and 164 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-19 07:46:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:34,854 INFO L93 Difference]: Finished difference Result 209 states and 332 transitions. [2023-11-19 07:46:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 231 [2023-11-19 07:46:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:34,866 INFO L225 Difference]: With dead ends: 209 [2023-11-19 07:46:34,867 INFO L226 Difference]: Without dead ends: 110 [2023-11-19 07:46:34,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 454 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 07:46:34,874 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 187 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:34,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 265 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-19 07:46:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2023-11-19 07:46:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:46:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 165 transitions. [2023-11-19 07:46:34,916 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 165 transitions. Word has length 231 [2023-11-19 07:46:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:34,919 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 165 transitions. [2023-11-19 07:46:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-19 07:46:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 165 transitions. [2023-11-19 07:46:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-19 07:46:34,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:34,930 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:34,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:35,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:35,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:35,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1657446147, now seen corresponding path program 1 times [2023-11-19 07:46:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187045261] [2023-11-19 07:46:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:35,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138805513] [2023-11-19 07:46:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:35,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:35,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:35,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:35,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e69b5e-b457-4922-8f39-df133c27771d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:35,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:46:35,440 INFO L285 TraceCheckSpWp]: Computing forward predicates...