./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya --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 259f18f71524139b1631e1c50b6bbb437c0ac4e6fa670637b91f9a128d4d72dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:05:29,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:05:29,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:05:29,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:05:29,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:05:29,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:05:29,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:05:29,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:05:29,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:05:29,616 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:05:29,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:05:29,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:05:29,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:05:29,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:05:29,620 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:05:29,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:05:29,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:05:29,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:05:29,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:05:29,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:05:29,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:05:29,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:05:29,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:05:29,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:05:29,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:05:29,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:05:29,626 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:05:29,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:05:29,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:05:29,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:05:29,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:05:29,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:05:29,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:05:29,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:05:29,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:05:29,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:05:29,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:05:29,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:05:29,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:05:29,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:05:29,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:05:29,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:05:29,631 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_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259f18f71524139b1631e1c50b6bbb437c0ac4e6fa670637b91f9a128d4d72dd [2023-11-29 06:05:29,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:05:29,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:05:29,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:05:29,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:05:29,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:05:29,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i [2023-11-29 06:05:32,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:05:32,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:05:32,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i [2023-11-29 06:05:32,915 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/data/75a35f0d5/c6fa85cd646940a0979082322227f64b/FLAG5fa9fd981 [2023-11-29 06:05:32,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/data/75a35f0d5/c6fa85cd646940a0979082322227f64b [2023-11-29 06:05:32,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:05:32,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:05:32,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:05:32,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:05:32,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:05:32,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:05:32" (1/1) ... [2023-11-29 06:05:32,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efaab07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:32, skipping insertion in model container [2023-11-29 06:05:32,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:05:32" (1/1) ... [2023-11-29 06:05:32,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:05:33,114 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_f925ec56-6087-41a7-84c3-5e21c903faa1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i[916,929] [2023-11-29 06:05:33,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:05:33,315 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:05:33,325 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_f925ec56-6087-41a7-84c3-5e21c903faa1/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-70.i[916,929] [2023-11-29 06:05:33,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:05:33,433 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:05:33,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33 WrapperNode [2023-11-29 06:05:33,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:05:33,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:05:33,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:05:33,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:05:33,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,578 INFO L138 Inliner]: procedures = 26, calls = 139, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 959 [2023-11-29 06:05:33,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:05:33,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:05:33,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:05:33,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:05:33,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,641 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:05:33,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:05:33,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:05:33,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:05:33,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:05:33,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (1/1) ... [2023-11-29 06:05:33,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:05:33,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:33,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:05:33,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:05:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:05:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:05:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:05:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:05:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:05:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:05:33,954 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:05:33,957 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:05:34,915 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:05:34,975 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:05:34,975 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:05:34,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:05:34 BoogieIcfgContainer [2023-11-29 06:05:34,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:05:34,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:05:34,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:05:34,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:05:34,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:05:32" (1/3) ... [2023-11-29 06:05:34,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e49dbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:05:34, skipping insertion in model container [2023-11-29 06:05:34,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:05:33" (2/3) ... [2023-11-29 06:05:34,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e49dbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:05:34, skipping insertion in model container [2023-11-29 06:05:34,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:05:34" (3/3) ... [2023-11-29 06:05:34,984 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-70.i [2023-11-29 06:05:34,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:05:34,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:05:35,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:05:35,051 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;@1962e52d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:05:35,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:05:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 235 states have internal predecessors, (383), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-11-29 06:05:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-29 06:05:35,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:35,121 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:35,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:35,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -647893200, now seen corresponding path program 1 times [2023-11-29 06:05:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410953190] [2023-11-29 06:05:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410953190] [2023-11-29 06:05:35,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:05:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935670125] [2023-11-29 06:05:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:35,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:35,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:35,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:05:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:35,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:05:35,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 31250 trivial. 0 not checked. [2023-11-29 06:05:36,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935670125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:36,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:05:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903895241] [2023-11-29 06:05:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:05:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:05:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:05:36,123 INFO L87 Difference]: Start difference. First operand has 363 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 235 states have internal predecessors, (383), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) [2023-11-29 06:05:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:36,220 INFO L93 Difference]: Finished difference Result 723 states and 1394 transitions. [2023-11-29 06:05:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:05:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) Word has length 782 [2023-11-29 06:05:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:36,236 INFO L225 Difference]: With dead ends: 723 [2023-11-29 06:05:36,236 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 06:05:36,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:05:36,246 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:36,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:05:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 06:05:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2023-11-29 06:05:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 233 states have (on average 1.609442060085837) internal successors, (375), 233 states have internal predecessors, (375), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-11-29 06:05:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 627 transitions. [2023-11-29 06:05:36,331 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 627 transitions. Word has length 782 [2023-11-29 06:05:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:36,332 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 627 transitions. [2023-11-29 06:05:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) [2023-11-29 06:05:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 627 transitions. [2023-11-29 06:05:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-29 06:05:36,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:36,368 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:36,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:05:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:05:36,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:36,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2102708188, now seen corresponding path program 1 times [2023-11-29 06:05:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907341014] [2023-11-29 06:05:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:36,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:36,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396608971] [2023-11-29 06:05:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:36,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:36,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:36,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:05:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:37,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:05:37,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:37,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907341014] [2023-11-29 06:05:37,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396608971] [2023-11-29 06:05:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396608971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:37,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:05:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988275755] [2023-11-29 06:05:37,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:37,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:05:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:05:37,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:05:37,924 INFO L87 Difference]: Start difference. First operand 361 states and 627 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:38,222 INFO L93 Difference]: Finished difference Result 911 states and 1598 transitions. [2023-11-29 06:05:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:05:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-11-29 06:05:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:38,231 INFO L225 Difference]: With dead ends: 911 [2023-11-29 06:05:38,231 INFO L226 Difference]: Without dead ends: 551 [2023-11-29 06:05:38,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:05:38,234 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 323 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:38,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1256 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:05:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-29 06:05:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 548. [2023-11-29 06:05:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 398 states have (on average 1.6959798994974875) internal successors, (675), 399 states have internal predecessors, (675), 147 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (147), 146 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-29 06:05:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 969 transitions. [2023-11-29 06:05:38,318 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 969 transitions. Word has length 782 [2023-11-29 06:05:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:38,321 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 969 transitions. [2023-11-29 06:05:38,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 969 transitions. [2023-11-29 06:05:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-29 06:05:38,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:38,332 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:38,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:05:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:38,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:38,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash -946852105, now seen corresponding path program 1 times [2023-11-29 06:05:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:38,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046258560] [2023-11-29 06:05:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:38,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:38,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535252783] [2023-11-29 06:05:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:38,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:38,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:38,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:05:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:39,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:05:39,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:40,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:40,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046258560] [2023-11-29 06:05:40,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535252783] [2023-11-29 06:05:40,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535252783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:05:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093289431] [2023-11-29 06:05:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:05:40,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:05:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:05:40,312 INFO L87 Difference]: Start difference. First operand 548 states and 969 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:40,922 INFO L93 Difference]: Finished difference Result 1640 states and 2901 transitions. [2023-11-29 06:05:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:05:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-11-29 06:05:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:40,935 INFO L225 Difference]: With dead ends: 1640 [2023-11-29 06:05:40,935 INFO L226 Difference]: Without dead ends: 1093 [2023-11-29 06:05:40,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:05:40,939 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 257 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:40,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1900 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:05:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-29 06:05:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1089. [2023-11-29 06:05:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 790 states have (on average 1.691139240506329) internal successors, (1336), 792 states have internal predecessors, (1336), 294 states have call successors, (294), 4 states have call predecessors, (294), 4 states have return successors, (294), 292 states have call predecessors, (294), 294 states have call successors, (294) [2023-11-29 06:05:41,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1924 transitions. [2023-11-29 06:05:41,187 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1924 transitions. Word has length 782 [2023-11-29 06:05:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:41,189 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1924 transitions. [2023-11-29 06:05:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1924 transitions. [2023-11-29 06:05:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:41,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:41,200 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:41,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:05:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:41,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:41,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1566840197, now seen corresponding path program 1 times [2023-11-29 06:05:41,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:41,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447576358] [2023-11-29 06:05:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:41,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:41,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812596462] [2023-11-29 06:05:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:41,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:41,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:41,496 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:41,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:05:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:41,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:05:41,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:42,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:42,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:42,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447576358] [2023-11-29 06:05:42,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:42,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812596462] [2023-11-29 06:05:42,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812596462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:42,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:42,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:05:42,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197012453] [2023-11-29 06:05:42,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:42,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:05:42,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:05:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:05:42,023 INFO L87 Difference]: Start difference. First operand 1089 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:42,404 INFO L93 Difference]: Finished difference Result 2863 states and 5062 transitions. [2023-11-29 06:05:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:05:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 783 [2023-11-29 06:05:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:42,416 INFO L225 Difference]: With dead ends: 2863 [2023-11-29 06:05:42,416 INFO L226 Difference]: Without dead ends: 1775 [2023-11-29 06:05:42,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:05:42,420 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 318 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:42,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2128 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:05:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2023-11-29 06:05:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1751. [2023-11-29 06:05:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1322 states have (on average 1.7065052950075643) internal successors, (2256), 1328 states have internal predecessors, (2256), 420 states have call successors, (420), 8 states have call predecessors, (420), 8 states have return successors, (420), 414 states have call predecessors, (420), 420 states have call successors, (420) [2023-11-29 06:05:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 3096 transitions. [2023-11-29 06:05:42,568 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 3096 transitions. Word has length 783 [2023-11-29 06:05:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 3096 transitions. [2023-11-29 06:05:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 3096 transitions. [2023-11-29 06:05:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:42,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:42,577 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:42,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:05:42,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:42,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:42,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2127539975, now seen corresponding path program 1 times [2023-11-29 06:05:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460711737] [2023-11-29 06:05:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:42,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949248521] [2023-11-29 06:05:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:42,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:42,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:42,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:42,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:05:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:43,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:05:43,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:43,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460711737] [2023-11-29 06:05:43,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949248521] [2023-11-29 06:05:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949248521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:43,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:05:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264438670] [2023-11-29 06:05:43,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:43,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:05:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:05:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:05:43,411 INFO L87 Difference]: Start difference. First operand 1751 states and 3096 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:43,580 INFO L93 Difference]: Finished difference Result 4771 states and 8456 transitions. [2023-11-29 06:05:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:05:43,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 783 [2023-11-29 06:05:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:43,603 INFO L225 Difference]: With dead ends: 4771 [2023-11-29 06:05:43,603 INFO L226 Difference]: Without dead ends: 3021 [2023-11-29 06:05:43,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:05:43,609 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 277 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:43,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1238 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:05:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-11-29 06:05:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3015. [2023-11-29 06:05:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2378 states have (on average 1.727502102607233) internal successors, (4108), 2392 states have internal predecessors, (4108), 620 states have call successors, (620), 16 states have call predecessors, (620), 16 states have return successors, (620), 606 states have call predecessors, (620), 620 states have call successors, (620) [2023-11-29 06:05:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5348 transitions. [2023-11-29 06:05:43,904 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5348 transitions. Word has length 783 [2023-11-29 06:05:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5348 transitions. [2023-11-29 06:05:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5348 transitions. [2023-11-29 06:05:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:43,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:43,919 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:43,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:05:44,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:44,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:44,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1138068023, now seen corresponding path program 1 times [2023-11-29 06:05:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540434237] [2023-11-29 06:05:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:44,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:44,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773893183] [2023-11-29 06:05:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:44,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:44,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:44,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:05:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:44,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:05:44,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:44,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540434237] [2023-11-29 06:05:44,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773893183] [2023-11-29 06:05:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773893183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:44,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:44,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:05:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005382918] [2023-11-29 06:05:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:44,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:05:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:05:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:05:44,748 INFO L87 Difference]: Start difference. First operand 3015 states and 5348 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:45,081 INFO L93 Difference]: Finished difference Result 9751 states and 17036 transitions. [2023-11-29 06:05:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:05:45,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 783 [2023-11-29 06:05:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:45,130 INFO L225 Difference]: With dead ends: 9751 [2023-11-29 06:05:45,130 INFO L226 Difference]: Without dead ends: 6737 [2023-11-29 06:05:45,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:05:45,141 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 687 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:45,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1892 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:05:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2023-11-29 06:05:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6699. [2023-11-29 06:05:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 5298 states have (on average 1.6893167232918083) internal successors, (8950), 5358 states have internal predecessors, (8950), 1336 states have call successors, (1336), 64 states have call predecessors, (1336), 64 states have return successors, (1336), 1276 states have call predecessors, (1336), 1336 states have call successors, (1336) [2023-11-29 06:05:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 11622 transitions. [2023-11-29 06:05:45,761 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 11622 transitions. Word has length 783 [2023-11-29 06:05:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:45,762 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 11622 transitions. [2023-11-29 06:05:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 11622 transitions. [2023-11-29 06:05:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:45,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:45,777 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:45,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:05:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:45,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:45,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1138008441, now seen corresponding path program 1 times [2023-11-29 06:05:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532723678] [2023-11-29 06:05:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:46,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027394580] [2023-11-29 06:05:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:46,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:46,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:46,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:46,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:05:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:46,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:05:46,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:05:46,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:05:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532723678] [2023-11-29 06:05:46,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027394580] [2023-11-29 06:05:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027394580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:46,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:05:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933940289] [2023-11-29 06:05:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:05:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:05:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:05:46,578 INFO L87 Difference]: Start difference. First operand 6699 states and 11622 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:48,471 INFO L93 Difference]: Finished difference Result 24985 states and 42981 transitions. [2023-11-29 06:05:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:05:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 783 [2023-11-29 06:05:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:48,570 INFO L225 Difference]: With dead ends: 24985 [2023-11-29 06:05:48,570 INFO L226 Difference]: Without dead ends: 18287 [2023-11-29 06:05:48,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:05:48,595 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 964 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:48,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 2856 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:05:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18287 states. [2023-11-29 06:05:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18287 to 17987. [2023-11-29 06:05:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17987 states, 13902 states have (on average 1.6517047906776003) internal successors, (22962), 14090 states have internal predecessors, (22962), 3888 states have call successors, (3888), 196 states have call predecessors, (3888), 196 states have return successors, (3888), 3700 states have call predecessors, (3888), 3888 states have call successors, (3888) [2023-11-29 06:05:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 30738 transitions. [2023-11-29 06:05:50,356 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 30738 transitions. Word has length 783 [2023-11-29 06:05:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:50,358 INFO L495 AbstractCegarLoop]: Abstraction has 17987 states and 30738 transitions. [2023-11-29 06:05:50,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:05:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 30738 transitions. [2023-11-29 06:05:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:50,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:50,382 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:50,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:05:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:50,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:50,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1311591689, now seen corresponding path program 1 times [2023-11-29 06:05:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950668292] [2023-11-29 06:05:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:50,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725954587] [2023-11-29 06:05:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:50,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:50,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:50,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:05:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:51,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:05:51,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 1595 proven. 366 refuted. 0 times theorem prover too weak. 29539 trivial. 0 not checked. [2023-11-29 06:05:52,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:05:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 9 proven. 366 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-11-29 06:05:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950668292] [2023-11-29 06:05:52,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725954587] [2023-11-29 06:05:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725954587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:05:52,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:05:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 06:05:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895309097] [2023-11-29 06:05:52,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:05:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:05:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:52,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:05:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:05:52,868 INFO L87 Difference]: Start difference. First operand 17987 states and 30738 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (248), 2 states have call predecessors, (248), 4 states have return successors, (249), 2 states have call predecessors, (249), 2 states have call successors, (249) [2023-11-29 06:05:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:54,053 INFO L93 Difference]: Finished difference Result 34541 states and 59131 transitions. [2023-11-29 06:05:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:05:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (248), 2 states have call predecessors, (248), 4 states have return successors, (249), 2 states have call predecessors, (249), 2 states have call successors, (249) Word has length 783 [2023-11-29 06:05:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:54,122 INFO L225 Difference]: With dead ends: 34541 [2023-11-29 06:05:54,122 INFO L226 Difference]: Without dead ends: 16555 [2023-11-29 06:05:54,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1558 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:05:54,179 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 470 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:54,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1223 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:05:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16555 states. [2023-11-29 06:05:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16555 to 16355. [2023-11-29 06:05:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16355 states, 12558 states have (on average 1.6641184902054467) internal successors, (20898), 12650 states have internal predecessors, (20898), 3600 states have call successors, (3600), 196 states have call predecessors, (3600), 196 states have return successors, (3600), 3508 states have call predecessors, (3600), 3600 states have call successors, (3600) [2023-11-29 06:05:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16355 states to 16355 states and 28098 transitions. [2023-11-29 06:05:55,502 INFO L78 Accepts]: Start accepts. Automaton has 16355 states and 28098 transitions. Word has length 783 [2023-11-29 06:05:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:55,504 INFO L495 AbstractCegarLoop]: Abstraction has 16355 states and 28098 transitions. [2023-11-29 06:05:55,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (248), 2 states have call predecessors, (248), 4 states have return successors, (249), 2 states have call predecessors, (249), 2 states have call successors, (249) [2023-11-29 06:05:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16355 states and 28098 transitions. [2023-11-29 06:05:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-29 06:05:55,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:55,526 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:55,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:05:55,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:55,729 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:55,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1704559117, now seen corresponding path program 1 times [2023-11-29 06:05:55,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593300786] [2023-11-29 06:05:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:55,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:55,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500760807] [2023-11-29 06:05:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:55,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:55,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:55,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:05:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:56,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:05:56,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:05:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 7319 proven. 48 refuted. 0 times theorem prover too weak. 24133 trivial. 0 not checked. [2023-11-29 06:05:56,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:05:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 327 proven. 48 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-11-29 06:05:56,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593300786] [2023-11-29 06:05:56,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:05:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500760807] [2023-11-29 06:05:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500760807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:05:56,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:05:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 06:05:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733264732] [2023-11-29 06:05:56,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:05:56,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:05:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:05:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:05:56,870 INFO L87 Difference]: Start difference. First operand 16355 states and 28098 transitions. Second operand has 8 states, 8 states have (on average 27.875) internal successors, (223), 8 states have internal predecessors, (223), 3 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 3 states have call predecessors, (143), 3 states have call successors, (143) [2023-11-29 06:05:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:58,230 INFO L93 Difference]: Finished difference Result 32941 states and 56419 transitions. [2023-11-29 06:05:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:05:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.875) internal successors, (223), 8 states have internal predecessors, (223), 3 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 3 states have call predecessors, (143), 3 states have call successors, (143) Word has length 783 [2023-11-29 06:05:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:58,292 INFO L225 Difference]: With dead ends: 32941 [2023-11-29 06:05:58,293 INFO L226 Difference]: Without dead ends: 16587 [2023-11-29 06:05:58,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1558 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:05:58,327 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 422 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:58,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1194 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:05:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16587 states. [2023-11-29 06:05:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16587 to 16387. [2023-11-29 06:05:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16387 states, 12582 states have (on average 1.6323319027181689) internal successors, (20538), 12674 states have internal predecessors, (20538), 3600 states have call successors, (3600), 204 states have call predecessors, (3600), 204 states have return successors, (3600), 3508 states have call predecessors, (3600), 3600 states have call successors, (3600) [2023-11-29 06:05:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16387 states to 16387 states and 27738 transitions. [2023-11-29 06:05:59,685 INFO L78 Accepts]: Start accepts. Automaton has 16387 states and 27738 transitions. Word has length 783 [2023-11-29 06:05:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:59,686 INFO L495 AbstractCegarLoop]: Abstraction has 16387 states and 27738 transitions. [2023-11-29 06:05:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.875) internal successors, (223), 8 states have internal predecessors, (223), 3 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 3 states have call predecessors, (143), 3 states have call successors, (143) [2023-11-29 06:05:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 16387 states and 27738 transitions. [2023-11-29 06:05:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:05:59,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:59,704 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:59,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:05:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:59,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:59,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1196901769, now seen corresponding path program 1 times [2023-11-29 06:05:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:59,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903214411] [2023-11-29 06:05:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:59,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:05:59,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828727654] [2023-11-29 06:05:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:05:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:05:59,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:05:59,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:06:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:00,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:06:00,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:06:01,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903214411] [2023-11-29 06:06:01,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828727654] [2023-11-29 06:06:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828727654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:01,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:06:01,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:06:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645960763] [2023-11-29 06:06:01,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:06:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:06:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:06:01,299 INFO L87 Difference]: Start difference. First operand 16387 states and 27738 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:05,927 INFO L93 Difference]: Finished difference Result 99663 states and 166896 transitions. [2023-11-29 06:06:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:06:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 784 [2023-11-29 06:06:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:06,153 INFO L225 Difference]: With dead ends: 99663 [2023-11-29 06:06:06,153 INFO L226 Difference]: Without dead ends: 83277 [2023-11-29 06:06:06,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:06:06,199 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 2062 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:06,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 2967 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:06:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83277 states. [2023-11-29 06:06:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83277 to 62759. [2023-11-29 06:06:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62759 states, 50158 states have (on average 1.6365883807169346) internal successors, (82088), 50534 states have internal predecessors, (82088), 11808 states have call successors, (11808), 792 states have call predecessors, (11808), 792 states have return successors, (11808), 11432 states have call predecessors, (11808), 11808 states have call successors, (11808) [2023-11-29 06:06:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62759 states to 62759 states and 105704 transitions. [2023-11-29 06:06:10,426 INFO L78 Accepts]: Start accepts. Automaton has 62759 states and 105704 transitions. Word has length 784 [2023-11-29 06:06:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:10,427 INFO L495 AbstractCegarLoop]: Abstraction has 62759 states and 105704 transitions. [2023-11-29 06:06:10,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 62759 states and 105704 transitions. [2023-11-29 06:06:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:06:10,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:10,476 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:10,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:06:10,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:06:10,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:10,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 404639237, now seen corresponding path program 1 times [2023-11-29 06:06:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083774387] [2023-11-29 06:06:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:10,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:06:10,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109919577] [2023-11-29 06:06:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:10,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:10,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:10,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:10,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:06:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:11,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:06:11,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 10763 proven. 294 refuted. 0 times theorem prover too weak. 20443 trivial. 0 not checked. [2023-11-29 06:06:11,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:06:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 81 proven. 294 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-11-29 06:06:12,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083774387] [2023-11-29 06:06:12,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109919577] [2023-11-29 06:06:12,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109919577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:06:12,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:06:12,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 06:06:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282920505] [2023-11-29 06:06:12,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:06:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:06:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:06:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:06:12,571 INFO L87 Difference]: Start difference. First operand 62759 states and 105704 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-11-29 06:06:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:15,386 INFO L93 Difference]: Finished difference Result 113533 states and 190767 transitions. [2023-11-29 06:06:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:06:15,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) Word has length 784 [2023-11-29 06:06:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:15,491 INFO L225 Difference]: With dead ends: 113533 [2023-11-29 06:06:15,491 INFO L226 Difference]: Without dead ends: 44359 [2023-11-29 06:06:15,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1560 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:06:15,569 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 278 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1170 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:06:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44359 states. [2023-11-29 06:06:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44359 to 43767. [2023-11-29 06:06:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43767 states, 33566 states have (on average 1.5801704105344694) internal successors, (53040), 33846 states have internal predecessors, (53040), 9504 states have call successors, (9504), 696 states have call predecessors, (9504), 696 states have return successors, (9504), 9224 states have call predecessors, (9504), 9504 states have call successors, (9504) [2023-11-29 06:06:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43767 states to 43767 states and 72048 transitions. [2023-11-29 06:06:18,728 INFO L78 Accepts]: Start accepts. Automaton has 43767 states and 72048 transitions. Word has length 784 [2023-11-29 06:06:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:18,729 INFO L495 AbstractCegarLoop]: Abstraction has 43767 states and 72048 transitions. [2023-11-29 06:06:18,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-11-29 06:06:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43767 states and 72048 transitions. [2023-11-29 06:06:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:06:18,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:18,758 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:18,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 06:06:18,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:18,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:18,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1380432823, now seen corresponding path program 1 times [2023-11-29 06:06:18,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:18,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051351172] [2023-11-29 06:06:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:18,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:19,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:06:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77964067] [2023-11-29 06:06:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:19,027 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:19,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:06:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:06:19,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 11319 proven. 288 refuted. 0 times theorem prover too weak. 19893 trivial. 0 not checked. [2023-11-29 06:06:20,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:06:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 87 proven. 288 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-11-29 06:06:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051351172] [2023-11-29 06:06:20,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77964067] [2023-11-29 06:06:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77964067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:06:20,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:06:20,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 06:06:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511878292] [2023-11-29 06:06:20,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:06:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:06:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:06:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:06:20,594 INFO L87 Difference]: Start difference. First operand 43767 states and 72048 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) [2023-11-29 06:06:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:23,810 INFO L93 Difference]: Finished difference Result 77277 states and 127167 transitions. [2023-11-29 06:06:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:06:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) Word has length 784 [2023-11-29 06:06:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:23,863 INFO L225 Difference]: With dead ends: 77277 [2023-11-29 06:06:23,863 INFO L226 Difference]: Without dead ends: 33511 [2023-11-29 06:06:23,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1560 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:06:23,907 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 297 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:23,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1192 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:06:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33511 states. [2023-11-29 06:06:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33511 to 33063. [2023-11-29 06:06:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33063 states, 25406 states have (on average 1.5889160040935213) internal successors, (40368), 25590 states have internal predecessors, (40368), 7104 states have call successors, (7104), 552 states have call predecessors, (7104), 552 states have return successors, (7104), 6920 states have call predecessors, (7104), 7104 states have call successors, (7104) [2023-11-29 06:06:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33063 states to 33063 states and 54576 transitions. [2023-11-29 06:06:26,188 INFO L78 Accepts]: Start accepts. Automaton has 33063 states and 54576 transitions. Word has length 784 [2023-11-29 06:06:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:26,189 INFO L495 AbstractCegarLoop]: Abstraction has 33063 states and 54576 transitions. [2023-11-29 06:06:26,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) [2023-11-29 06:06:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 33063 states and 54576 transitions. [2023-11-29 06:06:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:06:26,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:26,201 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:26,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:06:26,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:26,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:26,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash 464934343, now seen corresponding path program 1 times [2023-11-29 06:06:26,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:26,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140322331] [2023-11-29 06:06:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:26,466 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:06:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20047247] [2023-11-29 06:06:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:26,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:26,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:26,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:06:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:26,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:06:26,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:06:27,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:27,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:27,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140322331] [2023-11-29 06:06:27,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20047247] [2023-11-29 06:06:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20047247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:27,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:06:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:06:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776921314] [2023-11-29 06:06:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:06:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:06:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:06:27,019 INFO L87 Difference]: Start difference. First operand 33063 states and 54576 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:30,716 INFO L93 Difference]: Finished difference Result 89619 states and 147972 transitions. [2023-11-29 06:06:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:06:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 784 [2023-11-29 06:06:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:30,855 INFO L225 Difference]: With dead ends: 89619 [2023-11-29 06:06:30,855 INFO L226 Difference]: Without dead ends: 56557 [2023-11-29 06:06:30,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:06:30,913 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 507 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:30,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1469 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:06:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56557 states. [2023-11-29 06:06:34,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56557 to 53179. [2023-11-29 06:06:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53179 states, 40914 states have (on average 1.5729579117172605) internal successors, (64356), 41290 states have internal predecessors, (64356), 11328 states have call successors, (11328), 936 states have call predecessors, (11328), 936 states have return successors, (11328), 10952 states have call predecessors, (11328), 11328 states have call successors, (11328) [2023-11-29 06:06:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53179 states to 53179 states and 87012 transitions. [2023-11-29 06:06:34,763 INFO L78 Accepts]: Start accepts. Automaton has 53179 states and 87012 transitions. Word has length 784 [2023-11-29 06:06:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:34,764 INFO L495 AbstractCegarLoop]: Abstraction has 53179 states and 87012 transitions. [2023-11-29 06:06:34,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 53179 states and 87012 transitions. [2023-11-29 06:06:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:06:34,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:34,783 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:34,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:06:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:06:34,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:34,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:34,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1123413559, now seen corresponding path program 1 times [2023-11-29 06:06:34,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388209983] [2023-11-29 06:06:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:35,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:06:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967774826] [2023-11-29 06:06:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:35,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:35,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:35,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:35,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:06:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:35,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:06:35,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:06:36,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388209983] [2023-11-29 06:06:36,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967774826] [2023-11-29 06:06:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967774826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:36,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:06:36,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:06:36,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529574317] [2023-11-29 06:06:36,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:36,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:06:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:06:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:06:36,192 INFO L87 Difference]: Start difference. First operand 53179 states and 87012 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:40,276 INFO L93 Difference]: Finished difference Result 123885 states and 203403 transitions. [2023-11-29 06:06:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:06:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 784 [2023-11-29 06:06:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:40,427 INFO L225 Difference]: With dead ends: 123885 [2023-11-29 06:06:40,427 INFO L226 Difference]: Without dead ends: 67891 [2023-11-29 06:06:40,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:06:40,512 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1088 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:40,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2910 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:06:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67891 states. [2023-11-29 06:06:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67891 to 67797. [2023-11-29 06:06:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67797 states, 52813 states have (on average 1.579895101584837) internal successors, (83439), 53286 states have internal predecessors, (83439), 13755 states have call successors, (13755), 1228 states have call predecessors, (13755), 1228 states have return successors, (13755), 13282 states have call predecessors, (13755), 13755 states have call successors, (13755) [2023-11-29 06:06:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67797 states to 67797 states and 110949 transitions. [2023-11-29 06:06:45,999 INFO L78 Accepts]: Start accepts. Automaton has 67797 states and 110949 transitions. Word has length 784 [2023-11-29 06:06:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:46,000 INFO L495 AbstractCegarLoop]: Abstraction has 67797 states and 110949 transitions. [2023-11-29 06:06:46,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67797 states and 110949 transitions. [2023-11-29 06:06:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:06:46,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:46,028 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:46,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:06:46,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:06:46,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:46,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1262384327, now seen corresponding path program 1 times [2023-11-29 06:06:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424530005] [2023-11-29 06:06:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:46,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:06:46,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024887088] [2023-11-29 06:06:46,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:46,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:46,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:46,295 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:46,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:06:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:46,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:06:46,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:06:46,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:06:46,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:46,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424530005] [2023-11-29 06:06:46,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:06:46,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024887088] [2023-11-29 06:06:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024887088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:46,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:06:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:06:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471973934] [2023-11-29 06:06:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:06:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:06:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:06:46,765 INFO L87 Difference]: Start difference. First operand 67797 states and 110949 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:06:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:06:57,177 INFO L93 Difference]: Finished difference Result 228509 states and 374525 transitions. [2023-11-29 06:06:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:06:57,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 784 [2023-11-29 06:06:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:06:57,489 INFO L225 Difference]: With dead ends: 228509 [2023-11-29 06:06:57,489 INFO L226 Difference]: Without dead ends: 160771 [2023-11-29 06:06:57,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:06:57,590 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 1054 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:06:57,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2374 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:06:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160771 states. [2023-11-29 06:07:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160771 to 99493. [2023-11-29 06:07:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99493 states, 77957 states have (on average 1.5882473671382942) internal successors, (123815), 78622 states have internal predecessors, (123815), 19779 states have call successors, (19779), 1756 states have call predecessors, (19779), 1756 states have return successors, (19779), 19114 states have call predecessors, (19779), 19779 states have call successors, (19779) [2023-11-29 06:07:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99493 states to 99493 states and 163373 transitions. [2023-11-29 06:07:07,587 INFO L78 Accepts]: Start accepts. Automaton has 99493 states and 163373 transitions. Word has length 784 [2023-11-29 06:07:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:07,588 INFO L495 AbstractCegarLoop]: Abstraction has 99493 states and 163373 transitions. [2023-11-29 06:07:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-11-29 06:07:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 99493 states and 163373 transitions. [2023-11-29 06:07:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:07:07,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:07,628 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:07,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:07:07,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:07,829 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:07,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1207991429, now seen corresponding path program 1 times [2023-11-29 06:07:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:07,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756847412] [2023-11-29 06:07:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:07,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:07:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099010847] [2023-11-29 06:07:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:07,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:07,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:07:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:08,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:07:08,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 1833 proven. 9 refuted. 0 times theorem prover too weak. 29658 trivial. 0 not checked. [2023-11-29 06:07:08,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 366 proven. 9 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-11-29 06:07:08,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:08,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756847412] [2023-11-29 06:07:08,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:07:08,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099010847] [2023-11-29 06:07:08,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099010847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:08,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:07:08,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 06:07:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419643233] [2023-11-29 06:07:08,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:08,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:07:08,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:08,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:07:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:07:08,756 INFO L87 Difference]: Start difference. First operand 99493 states and 163373 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-11-29 06:07:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:23,978 INFO L93 Difference]: Finished difference Result 301663 states and 493225 transitions. [2023-11-29 06:07:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:07:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 784 [2023-11-29 06:07:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:24,433 INFO L225 Difference]: With dead ends: 301663 [2023-11-29 06:07:24,433 INFO L226 Difference]: Without dead ends: 202229 [2023-11-29 06:07:24,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1559 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:07:24,790 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1698 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:24,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 1678 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:07:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202229 states. [2023-11-29 06:07:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202229 to 199053. [2023-11-29 06:07:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199053 states, 155981 states have (on average 1.5843019342099358) internal successors, (247121), 157310 states have internal predecessors, (247121), 39531 states have call successors, (39531), 3540 states have call predecessors, (39531), 3540 states have return successors, (39531), 38202 states have call predecessors, (39531), 39531 states have call successors, (39531) [2023-11-29 06:07:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199053 states to 199053 states and 326183 transitions. [2023-11-29 06:07:42,202 INFO L78 Accepts]: Start accepts. Automaton has 199053 states and 326183 transitions. Word has length 784 [2023-11-29 06:07:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:42,202 INFO L495 AbstractCegarLoop]: Abstraction has 199053 states and 326183 transitions. [2023-11-29 06:07:42,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-11-29 06:07:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 199053 states and 326183 transitions. [2023-11-29 06:07:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-29 06:07:42,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:42,238 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:42,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:07:42,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:42,438 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:42,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash 390342979, now seen corresponding path program 1 times [2023-11-29 06:07:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382422108] [2023-11-29 06:07:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:42,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:07:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478840955] [2023-11-29 06:07:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:42,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:42,491 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:42,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:07:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:42,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:07:42,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 15173 proven. 147 refuted. 0 times theorem prover too weak. 16180 trivial. 0 not checked. [2023-11-29 06:07:43,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:44,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382422108] [2023-11-29 06:07:44,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:07:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478840955] [2023-11-29 06:07:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478840955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:44,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:07:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 06:07:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931975884] [2023-11-29 06:07:44,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:07:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:44,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:07:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:07:44,520 INFO L87 Difference]: Start difference. First operand 199053 states and 326183 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2023-11-29 06:08:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:20,363 INFO L93 Difference]: Finished difference Result 577207 states and 935718 transitions. [2023-11-29 06:08:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:08:20,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 784 [2023-11-29 06:08:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:21,575 INFO L225 Difference]: With dead ends: 577207 [2023-11-29 06:08:21,575 INFO L226 Difference]: Without dead ends: 378213 [2023-11-29 06:08:21,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=593, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:08:21,892 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1979 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:21,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 2819 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:08:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378213 states. [2023-11-29 06:08:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378213 to 256852. [2023-11-29 06:08:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256852 states, 202823 states have (on average 1.59312799830394) internal successors, (323123), 204488 states have internal predecessors, (323123), 48996 states have call successors, (48996), 5032 states have call predecessors, (48996), 5032 states have return successors, (48996), 47331 states have call predecessors, (48996), 48996 states have call successors, (48996) [2023-11-29 06:08:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256852 states to 256852 states and 421115 transitions. [2023-11-29 06:08:48,424 INFO L78 Accepts]: Start accepts. Automaton has 256852 states and 421115 transitions. Word has length 784 [2023-11-29 06:08:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:48,425 INFO L495 AbstractCegarLoop]: Abstraction has 256852 states and 421115 transitions. [2023-11-29 06:08:48,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 2 states have call successors, (126), 2 states have call predecessors, (126), 3 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2023-11-29 06:08:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 256852 states and 421115 transitions. [2023-11-29 06:08:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-29 06:08:48,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:48,480 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:08:48,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:08:48,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:08:48,681 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:08:48,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2020472162, now seen corresponding path program 1 times [2023-11-29 06:08:48,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:08:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362569509] [2023-11-29 06:08:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:48,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:08:48,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:08:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394298051] [2023-11-29 06:08:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:48,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:08:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:08:48,741 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:08:48,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:08:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:49,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:08:49,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 17572 proven. 516 refuted. 0 times theorem prover too weak. 13412 trivial. 0 not checked. [2023-11-29 06:08:55,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:55,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:08:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362569509] [2023-11-29 06:08:55,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:08:55,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394298051] [2023-11-29 06:08:55,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394298051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:55,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:08:55,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 06:08:55,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474210942] [2023-11-29 06:08:55,868 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:55,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:08:55,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:08:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:08:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:08:55,870 INFO L87 Difference]: Start difference. First operand 256852 states and 421115 transitions. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 06:09:08,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:13,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:17,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:21,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:25,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:28,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:34,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:40,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:09:57,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:10:26,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:10:35,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:10:40,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:10:53,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:11:02,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:11:14,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:11:25,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:11:41,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:12:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:40,045 INFO L93 Difference]: Finished difference Result 1290522 states and 2102253 transitions. [2023-11-29 06:12:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 06:12:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) Word has length 785 [2023-11-29 06:12:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:42,974 INFO L225 Difference]: With dead ends: 1290522 [2023-11-29 06:12:42,974 INFO L226 Difference]: Without dead ends: 1033760 [2023-11-29 06:12:43,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=446, Invalid=1360, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 06:12:43,454 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 2633 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 653 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 4786 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:43,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2754 Valid, 4786 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3736 Invalid, 14 Unknown, 0 Unchecked, 104.8s Time] [2023-11-29 06:12:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033760 states. [2023-11-29 06:14:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033760 to 1014932. [2023-11-29 06:14:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014932 states, 806119 states have (on average 1.590463690844652) internal successors, (1282103), 812808 states have internal predecessors, (1282103), 188484 states have call successors, (188484), 20328 states have call predecessors, (188484), 20328 states have return successors, (188484), 181795 states have call predecessors, (188484), 188484 states have call successors, (188484) [2023-11-29 06:14:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014932 states to 1014932 states and 1659071 transitions. [2023-11-29 06:14:43,441 INFO L78 Accepts]: Start accepts. Automaton has 1014932 states and 1659071 transitions. Word has length 785 [2023-11-29 06:14:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:43,442 INFO L495 AbstractCegarLoop]: Abstraction has 1014932 states and 1659071 transitions. [2023-11-29 06:14:43,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 12 states have internal predecessors, (173), 4 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 06:14:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1014932 states and 1659071 transitions. [2023-11-29 06:14:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-29 06:14:43,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:43,595 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:43,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:14:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:14:43,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:43,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1510999072, now seen corresponding path program 1 times [2023-11-29 06:14:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570835127] [2023-11-29 06:14:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:43,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:43,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:14:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070775454] [2023-11-29 06:14:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:43,865 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f925ec56-6087-41a7-84c3-5e21c903faa1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:14:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:44,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:14:44,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-11-29 06:14:45,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:14:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570835127] [2023-11-29 06:14:45,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:14:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070775454] [2023-11-29 06:14:45,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070775454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:45,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:14:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651444782] [2023-11-29 06:14:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:45,027 INFO L87 Difference]: Start difference. First operand 1014932 states and 1659071 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126)