./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ca3553adc490b1882c729ed973a7e595d2f670660d21ae0813ebe4cc084dcf5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:43:21,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:43:21,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:43:21,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:43:21,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:43:21,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:43:21,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:43:21,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:43:21,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:43:21,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:43:21,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:43:21,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:43:21,781 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:43:21,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:43:21,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:43:21,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:43:21,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:43:21,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:43:21,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:43:21,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:43:21,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:43:21,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:43:21,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:43:21,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:43:21,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:43:21,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:43:21,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:43:21,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:43:21,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:21,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:43:21,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:43:21,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:43:21,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:43:21,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:43:21,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:43:21,795 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:43:21,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:43:21,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:43:21,796 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:43:21,797 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_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ca3553adc490b1882c729ed973a7e595d2f670660d21ae0813ebe4cc084dcf5 [2023-11-06 22:43:22,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:43:22,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:43:22,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:43:22,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:43:22,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:43:22,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i [2023-11-06 22:43:25,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:43:25,877 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:43:25,878 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i [2023-11-06 22:43:25,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/data/15d79a011/b767c71046454c49ab911306ea769e75/FLAGbc45939a4 [2023-11-06 22:43:25,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/data/15d79a011/b767c71046454c49ab911306ea769e75 [2023-11-06 22:43:25,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:43:25,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:43:25,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:25,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:43:25,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:43:25,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:25" (1/1) ... [2023-11-06 22:43:25,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6716fe0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:25, skipping insertion in model container [2023-11-06 22:43:25,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:25" (1/1) ... [2023-11-06 22:43:25,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:43:26,157 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_60b4f5f1-e9d6-44a7-b5be-591778870829/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i[919,932] [2023-11-06 22:43:26,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:26,261 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:43:26,284 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_60b4f5f1-e9d6-44a7-b5be-591778870829/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i[919,932] [2023-11-06 22:43:26,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:26,364 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:43:26,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26 WrapperNode [2023-11-06 22:43:26,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:26,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:26,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:43:26,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:43:26,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,457 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 246 [2023-11-06 22:43:26,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:26,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:43:26,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:43:26,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:43:26,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:43:26,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:43:26,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:43:26,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:43:26,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (1/1) ... [2023-11-06 22:43:26,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:26,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:26,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:43:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:43:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:43:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:43:26,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:43:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:43:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:43:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:43:26,748 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:43:26,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:43:27,324 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:43:27,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:43:27,332 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:43:27,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:27 BoogieIcfgContainer [2023-11-06 22:43:27,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:43:27,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:43:27,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:43:27,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:43:27,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:25" (1/3) ... [2023-11-06 22:43:27,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502f57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:27, skipping insertion in model container [2023-11-06 22:43:27,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:26" (2/3) ... [2023-11-06 22:43:27,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502f57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:27, skipping insertion in model container [2023-11-06 22:43:27,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:27" (3/3) ... [2023-11-06 22:43:27,343 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-98.i [2023-11-06 22:43:27,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:43:27,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:43:27,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:43:27,486 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8d96fe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:43:27,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:43:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 66 states have internal predecessors, (95), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:43:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-06 22:43:27,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:27,527 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:27,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:27,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 112345955, now seen corresponding path program 1 times [2023-11-06 22:43:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177373829] [2023-11-06 22:43:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177373829] [2023-11-06 22:43:27,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:43:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482439156] [2023-11-06 22:43:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:27,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:27,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:43:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:28,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:43:28,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-06 22:43:28,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482439156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:28,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96150660] [2023-11-06 22:43:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:43:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:28,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:43:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:43:28,344 INFO L87 Difference]: Start difference. First operand has 102 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 66 states have internal predecessors, (95), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:43:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:28,422 INFO L93 Difference]: Finished difference Result 196 states and 352 transitions. [2023-11-06 22:43:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:43:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 217 [2023-11-06 22:43:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:28,439 INFO L225 Difference]: With dead ends: 196 [2023-11-06 22:43:28,440 INFO L226 Difference]: Without dead ends: 97 [2023-11-06 22:43:28,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:43:28,456 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:28,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:43:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-06 22:43:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-06 22:43:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:43:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 152 transitions. [2023-11-06 22:43:28,542 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 152 transitions. Word has length 217 [2023-11-06 22:43:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:28,543 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 152 transitions. [2023-11-06 22:43:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:43:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 152 transitions. [2023-11-06 22:43:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-06 22:43:28,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:28,555 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:28,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:28,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:43:28,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:28,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash 476962083, now seen corresponding path program 1 times [2023-11-06 22:43:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53913786] [2023-11-06 22:43:28,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:28,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:28,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403098856] [2023-11-06 22:43:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:28,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:28,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:28,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:43:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:29,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:43:29,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-06 22:43:30,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:30,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53913786] [2023-11-06 22:43:30,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403098856] [2023-11-06 22:43:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403098856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019420993] [2023-11-06 22:43:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:30,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:30,335 INFO L87 Difference]: Start difference. First operand 97 states and 152 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:30,496 INFO L93 Difference]: Finished difference Result 264 states and 417 transitions. [2023-11-06 22:43:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2023-11-06 22:43:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:30,507 INFO L225 Difference]: With dead ends: 264 [2023-11-06 22:43:30,507 INFO L226 Difference]: Without dead ends: 170 [2023-11-06 22:43:30,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:30,512 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 19 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:30,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 252 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-06 22:43:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2023-11-06 22:43:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-06 22:43:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 251 transitions. [2023-11-06 22:43:30,578 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 251 transitions. Word has length 217 [2023-11-06 22:43:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:30,580 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 251 transitions. [2023-11-06 22:43:30,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 251 transitions. [2023-11-06 22:43:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 22:43:30,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:30,589 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:30,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:30,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:30,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1802085134, now seen corresponding path program 1 times [2023-11-06 22:43:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717704880] [2023-11-06 22:43:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:30,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:30,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494448947] [2023-11-06 22:43:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:30,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:30,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:30,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:30,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:43:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:31,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:43:31,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-06 22:43:31,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717704880] [2023-11-06 22:43:31,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494448947] [2023-11-06 22:43:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494448947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:31,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:31,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:43:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241310550] [2023-11-06 22:43:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:31,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:43:31,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:43:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:31,501 INFO L87 Difference]: Start difference. First operand 161 states and 251 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:31,748 INFO L93 Difference]: Finished difference Result 350 states and 551 transitions. [2023-11-06 22:43:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:43:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2023-11-06 22:43:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:31,758 INFO L225 Difference]: With dead ends: 350 [2023-11-06 22:43:31,759 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 22:43:31,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:31,764 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 70 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:31,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 526 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:43:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 22:43:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2023-11-06 22:43:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 148 states have internal predecessors, (196), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-06 22:43:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 400 transitions. [2023-11-06 22:43:31,831 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 400 transitions. Word has length 218 [2023-11-06 22:43:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:31,833 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 400 transitions. [2023-11-06 22:43:31,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 400 transitions. [2023-11-06 22:43:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 22:43:31,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:31,840 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:31,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:32,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:32,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1531060650, now seen corresponding path program 1 times [2023-11-06 22:43:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:32,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018053583] [2023-11-06 22:43:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:32,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:32,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:32,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500570197] [2023-11-06 22:43:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:32,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:32,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:43:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:32,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:43:32,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 960 proven. 0 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2023-11-06 22:43:33,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018053583] [2023-11-06 22:43:33,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500570197] [2023-11-06 22:43:33,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500570197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:33,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:43:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466429908] [2023-11-06 22:43:33,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:33,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:43:33,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:43:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:33,670 INFO L87 Difference]: Start difference. First operand 254 states and 400 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:43:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:34,110 INFO L93 Difference]: Finished difference Result 443 states and 699 transitions. [2023-11-06 22:43:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:43:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 218 [2023-11-06 22:43:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:34,117 INFO L225 Difference]: With dead ends: 443 [2023-11-06 22:43:34,117 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 22:43:34,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:34,123 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 93 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:34,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 426 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:43:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 22:43:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2023-11-06 22:43:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-06 22:43:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 399 transitions. [2023-11-06 22:43:34,183 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 399 transitions. Word has length 218 [2023-11-06 22:43:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:34,187 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 399 transitions. [2023-11-06 22:43:34,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:43:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 399 transitions. [2023-11-06 22:43:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 22:43:34,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:34,192 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:34,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:34,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:34,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:34,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1272895212, now seen corresponding path program 1 times [2023-11-06 22:43:34,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:34,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720784515] [2023-11-06 22:43:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:34,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:34,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:34,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460771922] [2023-11-06 22:43:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:34,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:34,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:43:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:34,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:43:34,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-11-06 22:43:35,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:35,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720784515] [2023-11-06 22:43:35,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:35,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460771922] [2023-11-06 22:43:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460771922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:35,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:35,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:43:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855522691] [2023-11-06 22:43:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:35,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:35,383 INFO L87 Difference]: Start difference. First operand 254 states and 399 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:36,386 INFO L93 Difference]: Finished difference Result 636 states and 1002 transitions. [2023-11-06 22:43:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:43:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2023-11-06 22:43:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:36,392 INFO L225 Difference]: With dead ends: 636 [2023-11-06 22:43:36,392 INFO L226 Difference]: Without dead ends: 449 [2023-11-06 22:43:36,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:43:36,394 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 353 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:36,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 828 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:43:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-06 22:43:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 434. [2023-11-06 22:43:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 258 states have (on average 1.3372093023255813) internal successors, (345), 258 states have internal predecessors, (345), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-06 22:43:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 685 transitions. [2023-11-06 22:43:36,476 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 685 transitions. Word has length 218 [2023-11-06 22:43:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:36,481 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 685 transitions. [2023-11-06 22:43:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-06 22:43:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 685 transitions. [2023-11-06 22:43:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 22:43:36,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:36,486 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:36,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:36,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:36,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 502112150, now seen corresponding path program 1 times [2023-11-06 22:43:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:36,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725135421] [2023-11-06 22:43:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:36,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940291947] [2023-11-06 22:43:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:36,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:36,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b4f5f1-e9d6-44a7-b5be-591778870829/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:43:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:36,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:43:36,992 INFO L285 TraceCheckSpWp]: Computing forward predicates...