./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:03:09,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:03:10,126 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:03:10,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:03:10,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:03:10,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:03:10,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:03:10,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:03:10,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:03:10,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:03:10,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:03:10,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:03:10,201 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:03:10,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:03:10,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:03:10,205 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:03:10,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:03:10,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:03:10,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:03:10,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:03:10,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:03:10,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:03:10,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:03:10,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:03:10,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:03:10,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:03:10,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:03:10,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:03:10,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:10,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:03:10,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:03:10,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:03:10,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:03:10,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:03:10,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:03:10,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:03:10,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:03:10,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:03:10,219 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:03:10,247 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_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f [2023-11-12 02:03:10,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:03:10,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:03:10,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:03:10,748 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:03:10,749 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:03:10,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-12 02:03:14,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:03:14,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:03:14,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-12 02:03:14,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/data/2ecc92f8f/a39ad89042ee4b22a27feb3eea9f1ad3/FLAGf320ba71b [2023-11-12 02:03:14,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/data/2ecc92f8f/a39ad89042ee4b22a27feb3eea9f1ad3 [2023-11-12 02:03:14,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:03:14,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:03:14,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:14,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:03:14,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:03:14,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:14,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a79e856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14, skipping insertion in model container [2023-11-12 02:03:14,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:14,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:03:15,024 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_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-12 02:03:15,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:15,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:03:15,207 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_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-12 02:03:15,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:15,331 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:03:15,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15 WrapperNode [2023-11-12 02:03:15,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:15,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:15,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:03:15,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:03:15,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,476 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2023-11-12 02:03:15,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:15,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:03:15,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:03:15,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:03:15,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:03:15,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:03:15,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:03:15,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:03:15,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (1/1) ... [2023-11-12 02:03:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:15,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:03:15,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:03:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:03:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:03:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:03:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:03:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:03:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:03:15,932 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:03:15,935 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:03:16,928 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:03:16,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:03:16,952 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:03:16,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:16 BoogieIcfgContainer [2023-11-12 02:03:16,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:03:16,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:03:16,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:03:16,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:03:16,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:03:14" (1/3) ... [2023-11-12 02:03:16,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccaa4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:16, skipping insertion in model container [2023-11-12 02:03:16,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:15" (2/3) ... [2023-11-12 02:03:16,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccaa4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:16, skipping insertion in model container [2023-11-12 02:03:16,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:16" (3/3) ... [2023-11-12 02:03:16,974 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-12 02:03:17,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:03:17,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:03:17,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:03:17,105 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65bdb808, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:03:17,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:03:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 84 states have internal predecessors, (131), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:03:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:03:17,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:17,139 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:17,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:17,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 91564878, now seen corresponding path program 1 times [2023-11-12 02:03:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:17,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577358069] [2023-11-12 02:03:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:17,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577358069] [2023-11-12 02:03:17,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:03:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838711300] [2023-11-12 02:03:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:17,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:17,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:17,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:17,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:03:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:17,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:03:17,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-12 02:03:17,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:17,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838711300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:17,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:17,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:03:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515417537] [2023-11-12 02:03:17,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:17,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:03:17,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:03:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:03:17,971 INFO L87 Difference]: Start difference. First operand has 115 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 84 states have internal predecessors, (131), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 02:03:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:18,043 INFO L93 Difference]: Finished difference Result 223 states and 401 transitions. [2023-11-12 02:03:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:03:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 193 [2023-11-12 02:03:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:18,058 INFO L225 Difference]: With dead ends: 223 [2023-11-12 02:03:18,058 INFO L226 Difference]: Without dead ends: 111 [2023-11-12 02:03:18,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:03:18,068 INFO L413 NwaCegarLoop]: 178 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, 178 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:03:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-12 02:03:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-12 02:03:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 80 states have (on average 1.5) internal successors, (120), 80 states have internal predecessors, (120), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:03:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 178 transitions. [2023-11-12 02:03:18,150 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 178 transitions. Word has length 193 [2023-11-12 02:03:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:18,150 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 178 transitions. [2023-11-12 02:03:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 02:03:18,151 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 178 transitions. [2023-11-12 02:03:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-12 02:03:18,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:18,159 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:18,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:03:18,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:18,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2042685700, now seen corresponding path program 1 times [2023-11-12 02:03:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:18,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966661919] [2023-11-12 02:03:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:18,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137485018] [2023-11-12 02:03:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:18,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:18,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:18,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:18,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:03:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:18,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:03:18,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-11-12 02:03:20,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:03:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-12 02:03:20,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966661919] [2023-11-12 02:03:20,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137485018] [2023-11-12 02:03:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137485018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:03:20,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:03:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-12 02:03:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850488125] [2023-11-12 02:03:20,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:03:20,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:03:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:03:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:03:20,563 INFO L87 Difference]: Start difference. First operand 111 states and 178 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-12 02:03:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:21,698 INFO L93 Difference]: Finished difference Result 426 states and 688 transitions. [2023-11-12 02:03:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:03:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 194 [2023-11-12 02:03:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:21,706 INFO L225 Difference]: With dead ends: 426 [2023-11-12 02:03:21,707 INFO L226 Difference]: Without dead ends: 318 [2023-11-12 02:03:21,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:03:21,711 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 670 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:21,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 645 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:03:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-12 02:03:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 279. [2023-11-12 02:03:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 214 states have (on average 1.5233644859813085) internal successors, (326), 215 states have internal predecessors, (326), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-12 02:03:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 446 transitions. [2023-11-12 02:03:21,777 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 446 transitions. Word has length 194 [2023-11-12 02:03:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:21,779 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 446 transitions. [2023-11-12 02:03:21,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 4 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-12 02:03:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 446 transitions. [2023-11-12 02:03:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:03:21,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:21,786 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:21,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:21,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:21,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:21,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2133504169, now seen corresponding path program 1 times [2023-11-12 02:03:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516576330] [2023-11-12 02:03:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:22,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312009213] [2023-11-12 02:03:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:22,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:22,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:22,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:22,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:03:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:22,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:03:22,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-12 02:03:22,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516576330] [2023-11-12 02:03:22,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312009213] [2023-11-12 02:03:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312009213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:22,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231405483] [2023-11-12 02:03:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:22,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:22,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:22,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:22,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:22,416 INFO L87 Difference]: Start difference. First operand 279 states and 446 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:22,515 INFO L93 Difference]: Finished difference Result 805 states and 1289 transitions. [2023-11-12 02:03:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:22,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 195 [2023-11-12 02:03:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:22,532 INFO L225 Difference]: With dead ends: 805 [2023-11-12 02:03:22,532 INFO L226 Difference]: Without dead ends: 529 [2023-11-12 02:03:22,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:22,542 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 153 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:22,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 390 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:03:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-12 02:03:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 321. [2023-11-12 02:03:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.54296875) internal successors, (395), 257 states have internal predecessors, (395), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-12 02:03:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 515 transitions. [2023-11-12 02:03:22,647 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 515 transitions. Word has length 195 [2023-11-12 02:03:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:22,652 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 515 transitions. [2023-11-12 02:03:22,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 515 transitions. [2023-11-12 02:03:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:03:22,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:22,657 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:22,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:22,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:22,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:22,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash 356024793, now seen corresponding path program 1 times [2023-11-12 02:03:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093984045] [2023-11-12 02:03:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:22,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013071815] [2023-11-12 02:03:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:22,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:22,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:03:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:23,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:03:23,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 838 proven. 39 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-12 02:03:23,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:03:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-12 02:03:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093984045] [2023-11-12 02:03:23,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013071815] [2023-11-12 02:03:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013071815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:03:23,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:03:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-12 02:03:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843257985] [2023-11-12 02:03:23,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:03:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:03:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:03:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:03:23,759 INFO L87 Difference]: Start difference. First operand 321 states and 515 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-12 02:03:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:25,130 INFO L93 Difference]: Finished difference Result 1199 states and 1869 transitions. [2023-11-12 02:03:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:03:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 195 [2023-11-12 02:03:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:25,141 INFO L225 Difference]: With dead ends: 1199 [2023-11-12 02:03:25,141 INFO L226 Difference]: Without dead ends: 881 [2023-11-12 02:03:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:03:25,145 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 453 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1075 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:03:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-12 02:03:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 482. [2023-11-12 02:03:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 367 states have (on average 1.4795640326975477) internal successors, (543), 370 states have internal predecessors, (543), 104 states have call successors, (104), 10 states have call predecessors, (104), 10 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-12 02:03:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 751 transitions. [2023-11-12 02:03:25,254 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 751 transitions. Word has length 195 [2023-11-12 02:03:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:25,255 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 751 transitions. [2023-11-12 02:03:25,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-12 02:03:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 751 transitions. [2023-11-12 02:03:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:03:25,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:25,260 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:25,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-12 02:03:25,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:25,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1742228187, now seen corresponding path program 1 times [2023-11-12 02:03:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227403079] [2023-11-12 02:03:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:25,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445140951] [2023-11-12 02:03:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:25,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:25,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:25,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:03:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:25,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:03:25,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-12 02:03:25,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:25,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227403079] [2023-11-12 02:03:25,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445140951] [2023-11-12 02:03:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445140951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762253053] [2023-11-12 02:03:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:25,842 INFO L87 Difference]: Start difference. First operand 482 states and 751 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:26,056 INFO L93 Difference]: Finished difference Result 1226 states and 1904 transitions. [2023-11-12 02:03:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:26,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 195 [2023-11-12 02:03:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:26,065 INFO L225 Difference]: With dead ends: 1226 [2023-11-12 02:03:26,065 INFO L226 Difference]: Without dead ends: 776 [2023-11-12 02:03:26,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:26,068 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 153 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:26,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 425 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:03:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2023-11-12 02:03:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 592. [2023-11-12 02:03:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 477 states have (on average 1.4758909853249476) internal successors, (704), 480 states have internal predecessors, (704), 104 states have call successors, (104), 10 states have call predecessors, (104), 10 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-12 02:03:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 912 transitions. [2023-11-12 02:03:26,198 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 912 transitions. Word has length 195 [2023-11-12 02:03:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:26,200 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 912 transitions. [2023-11-12 02:03:26,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 912 transitions. [2023-11-12 02:03:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-12 02:03:26,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:26,206 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:26,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:26,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:26,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:26,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash 644097898, now seen corresponding path program 1 times [2023-11-12 02:03:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544181513] [2023-11-12 02:03:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:26,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:26,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494524886] [2023-11-12 02:03:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:26,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:26,499 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:26,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:03:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:26,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:03:26,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-12 02:03:27,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:03:27,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544181513] [2023-11-12 02:03:27,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:27,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494524886] [2023-11-12 02:03:27,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494524886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:27,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:27,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:03:27,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218519751] [2023-11-12 02:03:27,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:27,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:03:27,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:03:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:03:27,430 INFO L87 Difference]: Start difference. First operand 592 states and 912 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:29,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:31,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:32,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:33,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:37,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:38,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:40,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-12 02:03:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:41,636 INFO L93 Difference]: Finished difference Result 2017 states and 3065 transitions. [2023-11-12 02:03:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:03:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 196 [2023-11-12 02:03:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:41,650 INFO L225 Difference]: With dead ends: 2017 [2023-11-12 02:03:41,650 INFO L226 Difference]: Without dead ends: 1457 [2023-11-12 02:03:41,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:03:41,653 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 263 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 34 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:41,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 717 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 263 Invalid, 8 Unknown, 0 Unchecked, 13.3s Time] [2023-11-12 02:03:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2023-11-12 02:03:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1062. [2023-11-12 02:03:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 909 states have (on average 1.507150715071507) internal successors, (1370), 916 states have internal predecessors, (1370), 136 states have call successors, (136), 16 states have call predecessors, (136), 16 states have return successors, (136), 129 states have call predecessors, (136), 136 states have call successors, (136) [2023-11-12 02:03:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1642 transitions. [2023-11-12 02:03:41,821 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1642 transitions. Word has length 196 [2023-11-12 02:03:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1642 transitions. [2023-11-12 02:03:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-12 02:03:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1642 transitions. [2023-11-12 02:03:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-12 02:03:41,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:41,830 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:41,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:03:42,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:42,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:42,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1875862036, now seen corresponding path program 1 times [2023-11-12 02:03:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:42,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918476103] [2023-11-12 02:03:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:42,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:42,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:03:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779527435] [2023-11-12 02:03:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:42,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:42,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:42,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fa8ce73-04f0-45f1-afa5-0016052e5bf4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:03:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:42,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 02:03:42,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 612 proven. 138 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-12 02:03:44,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:03:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-12 02:03:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918476103] [2023-11-12 02:03:57,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:03:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779527435] [2023-11-12 02:03:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779527435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:03:57,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:03:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-11-12 02:03:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358739090] [2023-11-12 02:03:57,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:03:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-12 02:03:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-12 02:03:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:03:57,760 INFO L87 Difference]: Start difference. First operand 1062 states and 1642 transitions. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 5 states have call successors, (58), 4 states have call predecessors, (58), 7 states have return successors, (58), 5 states have call predecessors, (58), 5 states have call successors, (58)