./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/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 70d54a7730aec233a95490e3f0620c9d31c7d77ce29db2e5aff41d48560470e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:51,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:51,166 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:51,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:51,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:51,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:51,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:51,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:51,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:51,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:51,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:51,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:51,207 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:51,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:51,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:51,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:51,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:51,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:51,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:51,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:51,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:51,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:51,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:51,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:51,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:51,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:51,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:51,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:51,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:51,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:51,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:51,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:51,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:51,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:51,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:51,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:51,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:51,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:51,220 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:51,220 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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70d54a7730aec233a95490e3f0620c9d31c7d77ce29db2e5aff41d48560470e5 [2023-11-19 08:00:51,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:51,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:51,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:51,581 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:51,582 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:51,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-11-19 08:00:54,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:54,997 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:54,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-11-19 08:00:55,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/data/48bf7e89e/856c1408758a443cadf937d7ad1db531/FLAG8face6e66 [2023-11-19 08:00:55,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/data/48bf7e89e/856c1408758a443cadf937d7ad1db531 [2023-11-19 08:00:55,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:55,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:55,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:55,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:55,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:55,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:55,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443fd564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55, skipping insertion in model container [2023-11-19 08:00:55,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:55,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:55,262 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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i[916,929] [2023-11-19 08:00:55,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:55,582 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:55,602 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_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i[916,929] [2023-11-19 08:00:55,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:55,781 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:55,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55 WrapperNode [2023-11-19 08:00:55,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:55,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:55,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:55,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:55,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:55,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:55,989 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 894 [2023-11-19 08:00:55,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:55,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:55,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:55,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:56,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:56,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:56,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:56,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:56,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (1/1) ... [2023-11-19 08:00:56,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:56,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:00:56,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:00:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:56,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:56,455 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:56,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:57,935 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:57,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:57,963 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:57,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:57 BoogieIcfgContainer [2023-11-19 08:00:57,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:57,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:57,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:57,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:57,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:55" (1/3) ... [2023-11-19 08:00:57,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba6e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:57, skipping insertion in model container [2023-11-19 08:00:57,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:55" (2/3) ... [2023-11-19 08:00:57,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba6e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:57, skipping insertion in model container [2023-11-19 08:00:57,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:57" (3/3) ... [2023-11-19 08:00:57,996 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-11-19 08:00:58,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:58,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:00:58,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:58,117 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;@35ff93dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:58,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:00:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 226 states have (on average 1.6194690265486726) internal successors, (366), 227 states have internal predecessors, (366), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:00:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-11-19 08:00:58,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:58,194 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:58,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:58,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash 994826627, now seen corresponding path program 1 times [2023-11-19 08:00:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188858094] [2023-11-19 08:00:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188858094] [2023-11-19 08:00:58,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:00:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044610869] [2023-11-19 08:00:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:58,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:59,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:00:59,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 20808 trivial. 0 not checked. [2023-11-19 08:00:59,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:59,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044610869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:59,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:59,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775927528] [2023-11-19 08:00:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:59,654 INFO L87 Difference]: Start difference. First operand has 332 states, 226 states have (on average 1.6194690265486726) internal successors, (366), 227 states have internal predecessors, (366), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-19 08:00:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:59,798 INFO L93 Difference]: Finished difference Result 657 states and 1241 transitions. [2023-11-19 08:00:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:59,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) Word has length 681 [2023-11-19 08:00:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:59,821 INFO L225 Difference]: With dead ends: 657 [2023-11-19 08:00:59,821 INFO L226 Difference]: Without dead ends: 328 [2023-11-19 08:00:59,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 680 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 08:00:59,838 INFO L413 NwaCegarLoop]: 558 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, 558 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 08:00:59,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-19 08:00:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-11-19 08:00:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 223 states have (on average 1.5784753363228698) internal successors, (352), 223 states have internal predecessors, (352), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:00:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 558 transitions. [2023-11-19 08:00:59,978 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 558 transitions. Word has length 681 [2023-11-19 08:00:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:59,980 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 558 transitions. [2023-11-19 08:00:59,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-19 08:00:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 558 transitions. [2023-11-19 08:01:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-11-19 08:01:00,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:00,015 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:00,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:00,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:00,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1615509122, now seen corresponding path program 1 times [2023-11-19 08:01:00,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655589735] [2023-11-19 08:01:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:00,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771354590] [2023-11-19 08:01:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:01:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:01,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655589735] [2023-11-19 08:01:01,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:01,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771354590] [2023-11-19 08:01:01,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771354590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181154669] [2023-11-19 08:01:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:01,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:01,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:01,179 INFO L87 Difference]: Start difference. First operand 328 states and 558 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:01,341 INFO L93 Difference]: Finished difference Result 978 states and 1668 transitions. [2023-11-19 08:01:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 682 [2023-11-19 08:01:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:01,358 INFO L225 Difference]: With dead ends: 978 [2023-11-19 08:01:01,358 INFO L226 Difference]: Without dead ends: 653 [2023-11-19 08:01:01,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 680 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 08:01:01,362 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 542 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:01,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1626 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-11-19 08:01:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 344. [2023-11-19 08:01:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 239 states have (on average 1.5690376569037656) internal successors, (375), 239 states have internal predecessors, (375), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:01:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 581 transitions. [2023-11-19 08:01:01,446 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 581 transitions. Word has length 682 [2023-11-19 08:01:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:01,451 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 581 transitions. [2023-11-19 08:01:01,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 581 transitions. [2023-11-19 08:01:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-19 08:01:01,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:01,464 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:01,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:01,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1949708151, now seen corresponding path program 1 times [2023-11-19 08:01:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290464771] [2023-11-19 08:01:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883012878] [2023-11-19 08:01:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:01:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:02,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:02,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:02,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290464771] [2023-11-19 08:01:02,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883012878] [2023-11-19 08:01:02,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883012878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:02,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:02,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:02,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092471771] [2023-11-19 08:01:02,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:02,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:02,435 INFO L87 Difference]: Start difference. First operand 344 states and 581 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:02,477 INFO L93 Difference]: Finished difference Result 667 states and 1128 transitions. [2023-11-19 08:01:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 683 [2023-11-19 08:01:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:02,483 INFO L225 Difference]: With dead ends: 667 [2023-11-19 08:01:02,484 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 08:01:02,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 681 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 08:01:02,487 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 19 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1070 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 08:01:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-11-19 08:01:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 221 states have (on average 1.5520361990950227) internal successors, (343), 221 states have internal predecessors, (343), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-19 08:01:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 549 transitions. [2023-11-19 08:01:02,521 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 549 transitions. Word has length 683 [2023-11-19 08:01:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:02,523 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 549 transitions. [2023-11-19 08:01:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 549 transitions. [2023-11-19 08:01:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-19 08:01:02,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:02,532 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:02,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:02,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:02,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2020097277, now seen corresponding path program 1 times [2023-11-19 08:01:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446461586] [2023-11-19 08:01:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:02,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323703899] [2023-11-19 08:01:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:02,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:03,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:03,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446461586] [2023-11-19 08:01:03,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323703899] [2023-11-19 08:01:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323703899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773968493] [2023-11-19 08:01:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:03,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:03,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:03,535 INFO L87 Difference]: Start difference. First operand 326 states and 549 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:03,616 INFO L93 Difference]: Finished difference Result 836 states and 1418 transitions. [2023-11-19 08:01:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:03,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 684 [2023-11-19 08:01:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:03,622 INFO L225 Difference]: With dead ends: 836 [2023-11-19 08:01:03,623 INFO L226 Difference]: Without dead ends: 513 [2023-11-19 08:01:03,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 682 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 08:01:03,628 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 302 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:03,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1306 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-19 08:01:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 510. [2023-11-19 08:01:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 380 states have (on average 1.6026315789473684) internal successors, (609), 381 states have internal predecessors, (609), 127 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (127), 126 states have call predecessors, (127), 127 states have call successors, (127) [2023-11-19 08:01:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 863 transitions. [2023-11-19 08:01:03,715 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 863 transitions. Word has length 684 [2023-11-19 08:01:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:03,717 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 863 transitions. [2023-11-19 08:01:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 863 transitions. [2023-11-19 08:01:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-19 08:01:03,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:03,730 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:03,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:03,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:03,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash 186808305, now seen corresponding path program 1 times [2023-11-19 08:01:03,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770810536] [2023-11-19 08:01:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:04,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956537425] [2023-11-19 08:01:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:04,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:01:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:04,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:04,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770810536] [2023-11-19 08:01:04,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956537425] [2023-11-19 08:01:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956537425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:04,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522782295] [2023-11-19 08:01:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:04,682 INFO L87 Difference]: Start difference. First operand 510 states and 863 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:04,809 INFO L93 Difference]: Finished difference Result 1507 states and 2551 transitions. [2023-11-19 08:01:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 685 [2023-11-19 08:01:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:04,820 INFO L225 Difference]: With dead ends: 1507 [2023-11-19 08:01:04,820 INFO L226 Difference]: Without dead ends: 1000 [2023-11-19 08:01:04,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 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 08:01:04,823 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 520 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:04,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1412 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:01:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-11-19 08:01:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 998. [2023-11-19 08:01:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 739 states have (on average 1.580514208389716) internal successors, (1168), 741 states have internal predecessors, (1168), 254 states have call successors, (254), 4 states have call predecessors, (254), 4 states have return successors, (254), 252 states have call predecessors, (254), 254 states have call successors, (254) [2023-11-19 08:01:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1676 transitions. [2023-11-19 08:01:04,986 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1676 transitions. Word has length 685 [2023-11-19 08:01:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:04,987 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1676 transitions. [2023-11-19 08:01:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1676 transitions. [2023-11-19 08:01:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-19 08:01:04,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:04,996 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:05,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:05,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:05,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1653093297, now seen corresponding path program 1 times [2023-11-19 08:01:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:05,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668498122] [2023-11-19 08:01:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:05,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:05,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154877372] [2023-11-19 08:01:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:05,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:05,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:05,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:05,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:05,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:01:05,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:06,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:06,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:06,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668498122] [2023-11-19 08:01:06,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154877372] [2023-11-19 08:01:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154877372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:06,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843995440] [2023-11-19 08:01:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:06,013 INFO L87 Difference]: Start difference. First operand 998 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:06,342 INFO L93 Difference]: Finished difference Result 2770 states and 4675 transitions. [2023-11-19 08:01:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:01:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 685 [2023-11-19 08:01:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:06,357 INFO L225 Difference]: With dead ends: 2770 [2023-11-19 08:01:06,357 INFO L226 Difference]: Without dead ends: 1740 [2023-11-19 08:01:06,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:06,362 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1125 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1762 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:01:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-11-19 08:01:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1730. [2023-11-19 08:01:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1379 states have (on average 1.5866569978245104) internal successors, (2188), 1385 states have internal predecessors, (2188), 342 states have call successors, (342), 8 states have call predecessors, (342), 8 states have return successors, (342), 336 states have call predecessors, (342), 342 states have call successors, (342) [2023-11-19 08:01:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2872 transitions. [2023-11-19 08:01:06,572 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2872 transitions. Word has length 685 [2023-11-19 08:01:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:06,574 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2872 transitions. [2023-11-19 08:01:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2872 transitions. [2023-11-19 08:01:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-19 08:01:06,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:06,584 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:06,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:06,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:01:06,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:06,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1656906801, now seen corresponding path program 1 times [2023-11-19 08:01:06,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823437052] [2023-11-19 08:01:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:06,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38164649] [2023-11-19 08:01:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:06,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:06,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:01:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:07,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:07,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:07,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823437052] [2023-11-19 08:01:07,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38164649] [2023-11-19 08:01:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38164649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442606543] [2023-11-19 08:01:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:07,617 INFO L87 Difference]: Start difference. First operand 1730 states and 2872 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:07,808 INFO L93 Difference]: Finished difference Result 3647 states and 6073 transitions. [2023-11-19 08:01:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:07,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 685 [2023-11-19 08:01:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:07,824 INFO L225 Difference]: With dead ends: 3647 [2023-11-19 08:01:07,825 INFO L226 Difference]: Without dead ends: 1842 [2023-11-19 08:01:07,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 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 08:01:07,831 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 260 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1251 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2023-11-19 08:01:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1528. [2023-11-19 08:01:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1265 states have (on average 1.6268774703557312) internal successors, (2058), 1267 states have internal predecessors, (2058), 254 states have call successors, (254), 8 states have call predecessors, (254), 8 states have return successors, (254), 252 states have call predecessors, (254), 254 states have call successors, (254) [2023-11-19 08:01:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2566 transitions. [2023-11-19 08:01:07,992 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2566 transitions. Word has length 685 [2023-11-19 08:01:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:07,993 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2566 transitions. [2023-11-19 08:01:07,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2566 transitions. [2023-11-19 08:01:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-19 08:01:08,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:08,003 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:08,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:08,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1679539055, now seen corresponding path program 1 times [2023-11-19 08:01:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290275379] [2023-11-19 08:01:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:08,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548954831] [2023-11-19 08:01:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:08,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:01:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:08,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:09,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290275379] [2023-11-19 08:01:09,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:09,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548954831] [2023-11-19 08:01:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548954831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:09,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968016610] [2023-11-19 08:01:09,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:09,031 INFO L87 Difference]: Start difference. First operand 1528 states and 2566 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:09,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:09,160 INFO L93 Difference]: Finished difference Result 3575 states and 5916 transitions. [2023-11-19 08:01:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:09,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 685 [2023-11-19 08:01:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:09,176 INFO L225 Difference]: With dead ends: 3575 [2023-11-19 08:01:09,177 INFO L226 Difference]: Without dead ends: 2050 [2023-11-19 08:01:09,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 683 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 08:01:09,182 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 266 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:09,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1303 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2023-11-19 08:01:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 2046. [2023-11-19 08:01:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1565 states have (on average 1.5450479233226837) internal successors, (2418), 1571 states have internal predecessors, (2418), 464 states have call successors, (464), 16 states have call predecessors, (464), 16 states have return successors, (464), 458 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-19 08:01:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3346 transitions. [2023-11-19 08:01:09,401 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3346 transitions. Word has length 685 [2023-11-19 08:01:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:09,402 INFO L495 AbstractCegarLoop]: Abstraction has 2046 states and 3346 transitions. [2023-11-19 08:01:09,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3346 transitions. [2023-11-19 08:01:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-19 08:01:09,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:09,442 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:09,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:09,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:09,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1617499441, now seen corresponding path program 1 times [2023-11-19 08:01:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699727978] [2023-11-19 08:01:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:09,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899699903] [2023-11-19 08:01:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:09,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:09,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:01:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:10,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:01:10,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:10,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:10,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699727978] [2023-11-19 08:01:10,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899699903] [2023-11-19 08:01:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899699903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:10,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:10,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:10,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541832697] [2023-11-19 08:01:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:10,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:10,985 INFO L87 Difference]: Start difference. First operand 2046 states and 3346 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:12,494 INFO L93 Difference]: Finished difference Result 7190 states and 11879 transitions. [2023-11-19 08:01:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 685 [2023-11-19 08:01:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:12,536 INFO L225 Difference]: With dead ends: 7190 [2023-11-19 08:01:12,536 INFO L226 Difference]: Without dead ends: 5147 [2023-11-19 08:01:12,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:12,547 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1062 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:12,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 4459 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:01:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2023-11-19 08:01:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 2062. [2023-11-19 08:01:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1581 states have (on average 1.5395319418089817) internal successors, (2434), 1587 states have internal predecessors, (2434), 464 states have call successors, (464), 16 states have call predecessors, (464), 16 states have return successors, (464), 458 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-19 08:01:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3362 transitions. [2023-11-19 08:01:13,155 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3362 transitions. Word has length 685 [2023-11-19 08:01:13,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:13,156 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 3362 transitions. [2023-11-19 08:01:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3362 transitions. [2023-11-19 08:01:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-19 08:01:13,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:13,167 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:13,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:13,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:13,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1328412339, now seen corresponding path program 1 times [2023-11-19 08:01:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:13,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974215444] [2023-11-19 08:01:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:13,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453924998] [2023-11-19 08:01:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:13,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:13,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:13,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:13,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:01:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:14,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:01:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:14,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:14,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974215444] [2023-11-19 08:01:14,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:14,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453924998] [2023-11-19 08:01:14,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453924998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:14,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:14,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:14,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578668] [2023-11-19 08:01:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:14,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:14,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:14,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:14,600 INFO L87 Difference]: Start difference. First operand 2062 states and 3362 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:16,123 INFO L93 Difference]: Finished difference Result 7222 states and 11911 transitions. [2023-11-19 08:01:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:16,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 686 [2023-11-19 08:01:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:16,159 INFO L225 Difference]: With dead ends: 7222 [2023-11-19 08:01:16,159 INFO L226 Difference]: Without dead ends: 5163 [2023-11-19 08:01:16,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:16,167 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1057 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:16,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 4461 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:01:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2023-11-19 08:01:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 2062. [2023-11-19 08:01:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1581 states have (on average 1.5395319418089817) internal successors, (2434), 1587 states have internal predecessors, (2434), 464 states have call successors, (464), 16 states have call predecessors, (464), 16 states have return successors, (464), 458 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-19 08:01:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3362 transitions. [2023-11-19 08:01:16,792 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3362 transitions. Word has length 686 [2023-11-19 08:01:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:16,793 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 3362 transitions. [2023-11-19 08:01:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3362 transitions. [2023-11-19 08:01:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-19 08:01:16,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:16,803 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:16,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:01:17,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:17,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2008470709, now seen corresponding path program 1 times [2023-11-19 08:01:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397587197] [2023-11-19 08:01:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:17,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915167471] [2023-11-19 08:01:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:17,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:17,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:17,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:17,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:01:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:17,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:17,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:18,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397587197] [2023-11-19 08:01:18,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915167471] [2023-11-19 08:01:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915167471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:18,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:18,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:18,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305819680] [2023-11-19 08:01:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:18,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:18,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:18,742 INFO L87 Difference]: Start difference. First operand 2062 states and 3362 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:19,139 INFO L93 Difference]: Finished difference Result 4121 states and 6721 transitions. [2023-11-19 08:01:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 686 [2023-11-19 08:01:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:19,155 INFO L225 Difference]: With dead ends: 4121 [2023-11-19 08:01:19,156 INFO L226 Difference]: Without dead ends: 2062 [2023-11-19 08:01:19,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 684 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 08:01:19,162 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 272 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:19,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 539 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:01:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2023-11-19 08:01:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2062. [2023-11-19 08:01:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1581 states have (on average 1.5382669196710943) internal successors, (2432), 1587 states have internal predecessors, (2432), 464 states have call successors, (464), 16 states have call predecessors, (464), 16 states have return successors, (464), 458 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-19 08:01:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3360 transitions. [2023-11-19 08:01:19,623 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3360 transitions. Word has length 686 [2023-11-19 08:01:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:19,624 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 3360 transitions. [2023-11-19 08:01:19,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3360 transitions. [2023-11-19 08:01:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-11-19 08:01:19,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:19,634 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:19,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:01:19,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:19,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash 304509182, now seen corresponding path program 1 times [2023-11-19 08:01:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:19,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849268265] [2023-11-19 08:01:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:19,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:19,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49501879] [2023-11-19 08:01:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:19,944 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:19,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:01:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:20,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:20,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:23,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849268265] [2023-11-19 08:01:23,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49501879] [2023-11-19 08:01:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49501879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:23,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912368818] [2023-11-19 08:01:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:23,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:23,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:23,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:23,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:23,089 INFO L87 Difference]: Start difference. First operand 2062 states and 3360 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 6 states have internal predecessors, (175), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:29,368 INFO L93 Difference]: Finished difference Result 11603 states and 18818 transitions. [2023-11-19 08:01:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:29,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 6 states have internal predecessors, (175), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 687 [2023-11-19 08:01:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:29,421 INFO L225 Difference]: With dead ends: 11603 [2023-11-19 08:01:29,421 INFO L226 Difference]: Without dead ends: 9544 [2023-11-19 08:01:29,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:29,430 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 1876 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 418 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:29,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 3904 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1040 Invalid, 8 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 08:01:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2023-11-19 08:01:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9504. [2023-11-19 08:01:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9504 states, 7299 states have (on average 1.5276065214412933) internal successors, (11150), 7333 states have internal predecessors, (11150), 2120 states have call successors, (2120), 84 states have call predecessors, (2120), 84 states have return successors, (2120), 2086 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-11-19 08:01:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9504 states to 9504 states and 15390 transitions. [2023-11-19 08:01:31,658 INFO L78 Accepts]: Start accepts. Automaton has 9504 states and 15390 transitions. Word has length 687 [2023-11-19 08:01:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:31,659 INFO L495 AbstractCegarLoop]: Abstraction has 9504 states and 15390 transitions. [2023-11-19 08:01:31,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 6 states have internal predecessors, (175), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9504 states and 15390 transitions. [2023-11-19 08:01:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-11-19 08:01:31,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:31,682 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:31,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:31,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:01:31,897 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:31,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:31,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2031883328, now seen corresponding path program 1 times [2023-11-19 08:01:31,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:31,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346302466] [2023-11-19 08:01:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:32,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:32,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112095875] [2023-11-19 08:01:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:32,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:32,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:32,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:32,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c554b33e-bdcf-47a2-bbcb-bdf42d0b6905/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:01:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:32,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:01:32,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-19 08:01:33,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:33,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346302466] [2023-11-19 08:01:33,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112095875] [2023-11-19 08:01:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112095875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:33,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:01:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136221831] [2023-11-19 08:01:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:33,644 INFO L87 Difference]: Start difference. First operand 9504 states and 15390 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-19 08:01:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:41,334 INFO L93 Difference]: Finished difference Result 31325 states and 50567 transitions. [2023-11-19 08:01:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:41,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 687 [2023-11-19 08:01:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:41,414 INFO L225 Difference]: With dead ends: 31325 [2023-11-19 08:01:41,414 INFO L226 Difference]: Without dead ends: 21824 [2023-11-19 08:01:41,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:41,443 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 1407 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 6 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:41,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3268 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1366 Invalid, 13 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 08:01:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21824 states.