./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e81824e0f45dbdd470142701a92808145120f6f10a0f56e3dfb7fa84d424e25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:15,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:15,574 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:15,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:15,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:15,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:15,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:15,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:15,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:15,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:15,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:15,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:15,610 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:15,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:15,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:15,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:15,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:15,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:15,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:15,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:15,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:15,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:15,615 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:15,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:15,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:15,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:15,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:15,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:15,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:15,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:15,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:15,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:15,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:15,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:15,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:15,621 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:15,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:15,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:15,622 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:15,622 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_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e81824e0f45dbdd470142701a92808145120f6f10a0f56e3dfb7fa84d424e25 [2023-11-19 07:47:15,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:15,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:15,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:15,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:15,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:15,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-19 07:47:19,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:19,385 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:19,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-19 07:47:19,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/data/b54b795a7/504b0870e2924a9a88435feed5ef353c/FLAG8ef5e981a [2023-11-19 07:47:19,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/data/b54b795a7/504b0870e2924a9a88435feed5ef353c [2023-11-19 07:47:19,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:19,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:19,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:19,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:19,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:19,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f5b848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19, skipping insertion in model container [2023-11-19 07:47:19,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,465 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:19,616 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_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i[919,932] [2023-11-19 07:47:19,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:19,703 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:19,722 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_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i[919,932] [2023-11-19 07:47:19,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:19,825 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:19,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19 WrapperNode [2023-11-19 07:47:19,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:19,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:19,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:19,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:19,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,907 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 280 [2023-11-19 07:47:19,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:19,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:19,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:19,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:19,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:19,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:19,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:19,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:19,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (1/1) ... [2023-11-19 07:47:19,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:19,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:20,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:20,152 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:20,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:20,878 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:20,894 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:20,894 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:20,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:20 BoogieIcfgContainer [2023-11-19 07:47:20,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:20,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:20,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:20,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:20,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:19" (1/3) ... [2023-11-19 07:47:20,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480a1dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:20, skipping insertion in model container [2023-11-19 07:47:20,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:19" (2/3) ... [2023-11-19 07:47:20,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480a1dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:20, skipping insertion in model container [2023-11-19 07:47:20,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:20" (3/3) ... [2023-11-19 07:47:20,919 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-19 07:47:20,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:20,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:21,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:21,033 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;@630ab503, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:21,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-19 07:47:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-19 07:47:21,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:21,066 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:21,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:21,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash 17128314, now seen corresponding path program 1 times [2023-11-19 07:47:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:21,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640182562] [2023-11-19 07:47:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640182562] [2023-11-19 07:47:21,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:47:21,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260152055] [2023-11-19 07:47:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:21,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:21,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:21,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:21,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2023-11-19 07:47:21,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260152055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:21,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:21,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206243079] [2023-11-19 07:47:21,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:21,890 INFO L87 Difference]: Start difference. First operand has 115 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-19 07:47:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:21,936 INFO L93 Difference]: Finished difference Result 223 states and 405 transitions. [2023-11-19 07:47:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 256 [2023-11-19 07:47:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:21,948 INFO L225 Difference]: With dead ends: 223 [2023-11-19 07:47:21,949 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 07:47:21,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:21,958 INFO L413 NwaCegarLoop]: 177 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, 177 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:21,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 07:47:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-19 07:47:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-19 07:47:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 177 transitions. [2023-11-19 07:47:22,045 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 177 transitions. Word has length 256 [2023-11-19 07:47:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 177 transitions. [2023-11-19 07:47:22,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-19 07:47:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 177 transitions. [2023-11-19 07:47:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-19 07:47:22,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:22,053 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:22,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:22,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:47:22,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:22,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1686909700, now seen corresponding path program 1 times [2023-11-19 07:47:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398296123] [2023-11-19 07:47:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:22,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:22,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618721203] [2023-11-19 07:47:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:22,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:22,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:22,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:22,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:22,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-19 07:47:22,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398296123] [2023-11-19 07:47:22,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618721203] [2023-11-19 07:47:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618721203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:22,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70582261] [2023-11-19 07:47:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:22,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:22,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:22,770 INFO L87 Difference]: Start difference. First operand 111 states and 177 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:22,840 INFO L93 Difference]: Finished difference Result 220 states and 353 transitions. [2023-11-19 07:47:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2023-11-19 07:47:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:22,847 INFO L225 Difference]: With dead ends: 220 [2023-11-19 07:47:22,847 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:47:22,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:22,850 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:22,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:47:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-19 07:47:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-19 07:47:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 178 transitions. [2023-11-19 07:47:22,882 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 178 transitions. Word has length 256 [2023-11-19 07:47:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:22,885 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 178 transitions. [2023-11-19 07:47:22,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 178 transitions. [2023-11-19 07:47:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-19 07:47:22,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:22,892 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:22,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:23,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:23,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:23,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1264207874, now seen corresponding path program 1 times [2023-11-19 07:47:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:23,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73745688] [2023-11-19 07:47:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:23,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:23,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:23,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372299652] [2023-11-19 07:47:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:23,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:23,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:23,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:23,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:23,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:23,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-19 07:47:23,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73745688] [2023-11-19 07:47:23,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372299652] [2023-11-19 07:47:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372299652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106494728] [2023-11-19 07:47:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:23,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:23,890 INFO L87 Difference]: Start difference. First operand 112 states and 178 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:24,253 INFO L93 Difference]: Finished difference Result 456 states and 718 transitions. [2023-11-19 07:47:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2023-11-19 07:47:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:24,262 INFO L225 Difference]: With dead ends: 456 [2023-11-19 07:47:24,262 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 07:47:24,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:24,269 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 277 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:24,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 805 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 07:47:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 326. [2023-11-19 07:47:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 191 states have (on average 1.324607329842932) internal successors, (253), 193 states have internal predecessors, (253), 128 states have call successors, (128), 6 states have call predecessors, (128), 6 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2023-11-19 07:47:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 509 transitions. [2023-11-19 07:47:24,365 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 509 transitions. Word has length 256 [2023-11-19 07:47:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:24,367 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 509 transitions. [2023-11-19 07:47:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 509 transitions. [2023-11-19 07:47:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:47:24,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:24,373 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:24,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:24,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:24,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1525644002, now seen corresponding path program 1 times [2023-11-19 07:47:24,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:24,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898416087] [2023-11-19 07:47:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:24,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:24,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:24,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447056306] [2023-11-19 07:47:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:24,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:24,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:24,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:24,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:24,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-19 07:47:24,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:24,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898416087] [2023-11-19 07:47:24,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447056306] [2023-11-19 07:47:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447056306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:24,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355339163] [2023-11-19 07:47:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:24,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:24,930 INFO L87 Difference]: Start difference. First operand 326 states and 509 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:25,007 INFO L93 Difference]: Finished difference Result 591 states and 927 transitions. [2023-11-19 07:47:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:25,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-19 07:47:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:25,016 INFO L225 Difference]: With dead ends: 591 [2023-11-19 07:47:25,016 INFO L226 Difference]: Without dead ends: 350 [2023-11-19 07:47:25,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:25,024 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 15 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:25,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 337 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-19 07:47:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 330. [2023-11-19 07:47:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 195 states have (on average 1.3282051282051281) internal successors, (259), 197 states have internal predecessors, (259), 128 states have call successors, (128), 6 states have call predecessors, (128), 6 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2023-11-19 07:47:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 515 transitions. [2023-11-19 07:47:25,086 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 515 transitions. Word has length 257 [2023-11-19 07:47:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:25,087 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 515 transitions. [2023-11-19 07:47:25,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 515 transitions. [2023-11-19 07:47:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:47:25,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:25,092 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:25,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:25,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:25,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash 707995552, now seen corresponding path program 1 times [2023-11-19 07:47:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725645543] [2023-11-19 07:47:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:25,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308142685] [2023-11-19 07:47:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:25,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:25,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:25,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:25,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:25,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:25,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-19 07:47:26,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725645543] [2023-11-19 07:47:26,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308142685] [2023-11-19 07:47:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308142685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146347536] [2023-11-19 07:47:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:26,020 INFO L87 Difference]: Start difference. First operand 330 states and 515 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:26,377 INFO L93 Difference]: Finished difference Result 826 states and 1285 transitions. [2023-11-19 07:47:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:26,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-19 07:47:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:26,385 INFO L225 Difference]: With dead ends: 826 [2023-11-19 07:47:26,385 INFO L226 Difference]: Without dead ends: 577 [2023-11-19 07:47:26,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:26,388 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 158 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:26,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 641 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-19 07:47:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 556. [2023-11-19 07:47:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 330 states have (on average 1.3242424242424242) internal successors, (437), 334 states have internal predecessors, (437), 215 states have call successors, (215), 10 states have call predecessors, (215), 10 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-19 07:47:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 867 transitions. [2023-11-19 07:47:26,510 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 867 transitions. Word has length 257 [2023-11-19 07:47:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:26,515 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 867 transitions. [2023-11-19 07:47:26,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 867 transitions. [2023-11-19 07:47:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:47:26,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:26,522 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:26,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:26,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:26,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:26,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 848544162, now seen corresponding path program 1 times [2023-11-19 07:47:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265750412] [2023-11-19 07:47:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:26,785 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:26,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502246974] [2023-11-19 07:47:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:26,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:26,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:26,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:27,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:27,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-19 07:47:27,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265750412] [2023-11-19 07:47:27,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:27,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502246974] [2023-11-19 07:47:27,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502246974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:27,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714044927] [2023-11-19 07:47:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:27,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:27,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:27,360 INFO L87 Difference]: Start difference. First operand 556 states and 867 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:27,442 INFO L93 Difference]: Finished difference Result 1029 states and 1606 transitions. [2023-11-19 07:47:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:27,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-19 07:47:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:27,474 INFO L225 Difference]: With dead ends: 1029 [2023-11-19 07:47:27,474 INFO L226 Difference]: Without dead ends: 559 [2023-11-19 07:47:27,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:27,477 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:27,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-19 07:47:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 554. [2023-11-19 07:47:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 328 states have (on average 1.3201219512195121) internal successors, (433), 332 states have internal predecessors, (433), 215 states have call successors, (215), 10 states have call predecessors, (215), 10 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-19 07:47:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 863 transitions. [2023-11-19 07:47:27,572 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 863 transitions. Word has length 257 [2023-11-19 07:47:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:27,573 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 863 transitions. [2023-11-19 07:47:27,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-19 07:47:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 863 transitions. [2023-11-19 07:47:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:47:27,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:27,579 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:27,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:47:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:47:27,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:27,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:27,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1885047330, now seen corresponding path program 1 times [2023-11-19 07:47:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256818688] [2023-11-19 07:47:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:27,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:27,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327785000] [2023-11-19 07:47:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:27,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:27,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:27,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:47:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:28,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:47:28,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1559 proven. 69 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-19 07:47:28,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 165 proven. 72 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2023-11-19 07:47:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256818688] [2023-11-19 07:47:29,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327785000] [2023-11-19 07:47:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327785000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:29,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:29,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-19 07:47:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875360845] [2023-11-19 07:47:29,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:29,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:47:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:47:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:47:29,238 INFO L87 Difference]: Start difference. First operand 554 states and 863 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) [2023-11-19 07:47:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:32,560 INFO L93 Difference]: Finished difference Result 2476 states and 3752 transitions. [2023-11-19 07:47:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-19 07:47:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) Word has length 257 [2023-11-19 07:47:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:32,584 INFO L225 Difference]: With dead ends: 2476 [2023-11-19 07:47:32,584 INFO L226 Difference]: Without dead ends: 2041 [2023-11-19 07:47:32,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1092, Invalid=3198, Unknown=0, NotChecked=0, Total=4290 [2023-11-19 07:47:32,592 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 630 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:32,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1119 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:47:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2023-11-19 07:47:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1738. [2023-11-19 07:47:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1024 states have (on average 1.2783203125) internal successors, (1309), 1040 states have internal predecessors, (1309), 667 states have call successors, (667), 46 states have call predecessors, (667), 46 states have return successors, (667), 651 states have call predecessors, (667), 667 states have call successors, (667) [2023-11-19 07:47:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2643 transitions. [2023-11-19 07:47:33,137 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2643 transitions. Word has length 257 [2023-11-19 07:47:33,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:33,138 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2643 transitions. [2023-11-19 07:47:33,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) [2023-11-19 07:47:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2643 transitions. [2023-11-19 07:47:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-19 07:47:33,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:33,146 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:33,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:33,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:47:33,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:33,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1987218140, now seen corresponding path program 1 times [2023-11-19 07:47:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526303720] [2023-11-19 07:47:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969797189] [2023-11-19 07:47:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:33,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:33,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2261d8a3-a4ff-4f1c-aa2c-9efb5cb80f00/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:47:33,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1018 proven. 300 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2023-11-19 07:47:49,805 INFO L327 TraceCheckSpWp]: Computing backward predicates...