./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.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_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/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_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/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_6e09f54c-700d-4049-b246-6b51e1d9e934/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 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:29:40,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:29:41,054 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:29:41,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:29:41,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:29:41,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:29:41,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:29:41,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:29:41,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:29:41,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:29:41,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:29:41,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:29:41,110 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:29:41,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:29:41,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:29:41,113 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:29:41,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:29:41,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:29:41,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:29:41,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:29:41,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:29:41,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:29:41,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:29:41,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:29:41,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:29:41,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:29:41,119 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:29:41,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:29:41,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:41,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:29:41,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:29:41,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:29:41,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:29:41,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:29:41,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:29:41,140 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:29:41,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:29:41,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:29:41,141 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:29:41,141 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_6e09f54c-700d-4049-b246-6b51e1d9e934/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 985b50a0b8eeadb0f849d937466c4ec1e5f58df88650cbc5b820e0f210728055 [2023-11-06 22:29:41,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:29:41,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:29:41,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:29:41,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:29:41,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:29:41,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-06 22:29:44,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:29:44,933 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:29:44,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-06 22:29:44,944 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/data/ad7c464ea/980b3bfaa74a4cf98b106c549d3ace0f/FLAG622f7c704 [2023-11-06 22:29:44,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/data/ad7c464ea/980b3bfaa74a4cf98b106c549d3ace0f [2023-11-06 22:29:44,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:29:44,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:29:44,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:44,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:29:44,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:29:44,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:44" (1/1) ... [2023-11-06 22:29:44,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21431848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:44, skipping insertion in model container [2023-11-06 22:29:44,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:44" (1/1) ... [2023-11-06 22:29:45,009 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:29:45,199 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_6e09f54c-700d-4049-b246-6b51e1d9e934/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-06 22:29:45,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:45,329 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:29:45,342 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_6e09f54c-700d-4049-b246-6b51e1d9e934/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i[919,932] [2023-11-06 22:29:45,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:45,395 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:29:45,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45 WrapperNode [2023-11-06 22:29:45,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:45,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:45,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:29:45,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:29:45,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,472 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2023-11-06 22:29:45,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:45,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:29:45,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:29:45,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:29:45,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:29:45,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:29:45,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:29:45,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:29:45,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (1/1) ... [2023-11-06 22:29:45,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:45,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:45,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:29:45,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:29:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:29:45,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:29:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:29:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:29:45,776 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:29:45,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:29:46,370 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:29:46,377 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:29:46,377 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:29:46,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:46 BoogieIcfgContainer [2023-11-06 22:29:46,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:29:46,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:29:46,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:29:46,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:29:46,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:44" (1/3) ... [2023-11-06 22:29:46,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bb3b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:46, skipping insertion in model container [2023-11-06 22:29:46,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:45" (2/3) ... [2023-11-06 22:29:46,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bb3b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:46, skipping insertion in model container [2023-11-06 22:29:46,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:46" (3/3) ... [2023-11-06 22:29:46,391 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-46.i [2023-11-06 22:29:46,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:29:46,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:29:46,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:29:46,477 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;@1e777f88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:29:46,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:29:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:29:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-06 22:29:46,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:46,500 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:46,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:46,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -429023513, now seen corresponding path program 1 times [2023-11-06 22:29:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030471836] [2023-11-06 22:29:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030471836] [2023-11-06 22:29:46,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:29:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352346983] [2023-11-06 22:29:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:46,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:46,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:46,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:46,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:29:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:46,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:29:46,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-06 22:29:47,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:47,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352346983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:47,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:47,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:29:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464293377] [2023-11-06 22:29:47,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:29:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:47,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:29:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:29:47,122 INFO L87 Difference]: Start difference. First operand has 85 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 60 states have internal predecessors, (90), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:29:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:47,157 INFO L93 Difference]: Finished difference Result 163 states and 289 transitions. [2023-11-06 22:29:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:29:47,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2023-11-06 22:29:47,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:47,168 INFO L225 Difference]: With dead ends: 163 [2023-11-06 22:29:47,169 INFO L226 Difference]: Without dead ends: 81 [2023-11-06 22:29:47,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 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 22:29:47,176 INFO L413 NwaCegarLoop]: 128 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, 128 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 22:29:47,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:29:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-06 22:29:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-06 22:29:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 states have internal predecessors, (82), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:29:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 128 transitions. [2023-11-06 22:29:47,230 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 128 transitions. Word has length 153 [2023-11-06 22:29:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:47,231 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 128 transitions. [2023-11-06 22:29:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-06 22:29:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 128 transitions. [2023-11-06 22:29:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-06 22:29:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:47,236 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:47,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:47,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:29:47,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:47,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash 636161290, now seen corresponding path program 1 times [2023-11-06 22:29:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073725799] [2023-11-06 22:29:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:47,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745911609] [2023-11-06 22:29:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:47,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:47,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:47,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:47,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:47,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:29:47,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 686 proven. 96 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-06 22:29:49,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 30 proven. 99 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2023-11-06 22:29:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:51,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073725799] [2023-11-06 22:29:51,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:29:51,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745911609] [2023-11-06 22:29:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745911609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:51,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:29:51,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-06 22:29:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397632967] [2023-11-06 22:29:51,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:51,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:29:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:29:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:29:51,295 INFO L87 Difference]: Start difference. First operand 81 states and 128 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-06 22:29:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:57,482 INFO L93 Difference]: Finished difference Result 567 states and 830 transitions. [2023-11-06 22:29:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-06 22:29:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 154 [2023-11-06 22:29:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:57,491 INFO L225 Difference]: With dead ends: 567 [2023-11-06 22:29:57,491 INFO L226 Difference]: Without dead ends: 489 [2023-11-06 22:29:57,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1943, Invalid=5367, Unknown=0, NotChecked=0, Total=7310 [2023-11-06 22:29:57,498 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1440 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:57,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 795 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 22:29:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-06 22:29:57,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 124. [2023-11-06 22:29:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.4526315789473685) internal successors, (138), 95 states have internal predecessors, (138), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:29:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 184 transitions. [2023-11-06 22:29:57,563 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 184 transitions. Word has length 154 [2023-11-06 22:29:57,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:57,565 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 184 transitions. [2023-11-06 22:29:57,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 6 states have call successors, (41), 4 states have call predecessors, (41), 8 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2023-11-06 22:29:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 184 transitions. [2023-11-06 22:29:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:29:57,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:57,569 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:57,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:29:57,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:57,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1956617027, now seen corresponding path program 1 times [2023-11-06 22:29:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000161634] [2023-11-06 22:29:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:57,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:57,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:29:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69912577] [2023-11-06 22:29:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:57,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:57,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:57,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:57,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:29:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:58,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-06 22:29:58,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 658 proven. 219 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-06 22:30:03,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:30:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000161634] [2023-11-06 22:30:27,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:30:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69912577] [2023-11-06 22:30:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69912577] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:27,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:27,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [32] total 41 [2023-11-06 22:30:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637123455] [2023-11-06 22:30:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:27,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1335, Unknown=0, NotChecked=0, Total=1640 [2023-11-06 22:30:27,734 INFO L87 Difference]: Start difference. First operand 124 states and 184 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:30:52,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-06 22:31:49,837 WARN L293 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 129 DAG size of output: 130 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:32:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:12,024 INFO L93 Difference]: Finished difference Result 627 states and 932 transitions. [2023-11-06 22:32:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-06 22:32:12,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 155 [2023-11-06 22:32:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:12,031 INFO L225 Difference]: With dead ends: 627 [2023-11-06 22:32:12,031 INFO L226 Difference]: Without dead ends: 506 [2023-11-06 22:32:12,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2023-11-06 22:32:12,036 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 791 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:12,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 663 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-11-06 22:32:12,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-06 22:32:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 143. [2023-11-06 22:32:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 114 states have (on average 1.5) internal successors, (171), 114 states have internal predecessors, (171), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:32:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 217 transitions. [2023-11-06 22:32:12,075 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 217 transitions. Word has length 155 [2023-11-06 22:32:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:12,076 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 217 transitions. [2023-11-06 22:32:12,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 217 transitions. [2023-11-06 22:32:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:32:12,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:12,080 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:12,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:12,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:12,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1723726256, now seen corresponding path program 1 times [2023-11-06 22:32:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598230855] [2023-11-06 22:32:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:12,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754979231] [2023-11-06 22:32:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:12,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:32:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:12,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 22:32:12,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 643 proven. 147 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-06 22:32:25,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:32:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598230855] [2023-11-06 22:32:38,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:32:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754979231] [2023-11-06 22:32:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754979231] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:38,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 27 [2023-11-06 22:32:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678752915] [2023-11-06 22:32:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:32:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:32:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:32:38,013 INFO L87 Difference]: Start difference. First operand 143 states and 217 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:42,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-06 22:32:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:55,968 INFO L93 Difference]: Finished difference Result 627 states and 925 transitions. [2023-11-06 22:32:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:32:55,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 155 [2023-11-06 22:32:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:55,974 INFO L225 Difference]: With dead ends: 627 [2023-11-06 22:32:55,975 INFO L226 Difference]: Without dead ends: 487 [2023-11-06 22:32:55,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=333, Invalid=1473, Unknown=0, NotChecked=0, Total=1806 [2023-11-06 22:32:55,978 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 555 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:55,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 639 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-11-06 22:32:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-06 22:32:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 196. [2023-11-06 22:32:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 158 states have (on average 1.4873417721518987) internal successors, (235), 159 states have internal predecessors, (235), 29 states have call successors, (29), 8 states have call predecessors, (29), 8 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-06 22:32:56,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2023-11-06 22:32:56,046 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 155 [2023-11-06 22:32:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:56,047 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2023-11-06 22:32:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:32:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2023-11-06 22:32:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:32:56,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:56,061 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:56,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:56,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:56,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1520701819, now seen corresponding path program 1 times [2023-11-06 22:32:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773567986] [2023-11-06 22:32:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:56,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:32:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834239858] [2023-11-06 22:32:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:56,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:56,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:56,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:32:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:56,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:32:56,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 643 proven. 147 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-06 22:33:02,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-06 22:33:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773567986] [2023-11-06 22:33:26,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:33:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834239858] [2023-11-06 22:33:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834239858] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:26,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 29 [2023-11-06 22:33:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641578855] [2023-11-06 22:33:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:26,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:33:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:26,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:33:26,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:33:26,057 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:01,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-06 22:34:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:01,827 INFO L93 Difference]: Finished difference Result 685 states and 1018 transitions. [2023-11-06 22:34:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:34:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 155 [2023-11-06 22:34:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:01,834 INFO L225 Difference]: With dead ends: 685 [2023-11-06 22:34:01,834 INFO L226 Difference]: Without dead ends: 492 [2023-11-06 22:34:01,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=408, Invalid=1848, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 22:34:01,837 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 592 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:01,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 685 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 753 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2023-11-06 22:34:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-06 22:34:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 209. [2023-11-06 22:34:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.4970760233918128) internal successors, (256), 172 states have internal predecessors, (256), 29 states have call successors, (29), 8 states have call predecessors, (29), 8 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-06 22:34:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 314 transitions. [2023-11-06 22:34:01,904 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 314 transitions. Word has length 155 [2023-11-06 22:34:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 314 transitions. [2023-11-06 22:34:01,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-06 22:34:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 314 transitions. [2023-11-06 22:34:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-06 22:34:01,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:01,909 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:01,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e09f54c-700d-4049-b246-6b51e1d9e934/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0