./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adcde90e8b053d99359c11706230b2ebf7c2fa95333a62c210d892627b4fe438 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:29,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:29,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:48:29,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:29,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:29,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:29,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:29,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:29,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:29,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:29,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:29,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:29,557 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:29,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:29,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:29,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:29,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:29,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:29,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:29,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:29,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:29,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:29,563 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:29,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:29,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:29,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:29,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:29,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:29,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:29,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:29,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:29,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:29,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:29,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:29,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:29,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:29,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:29,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:29,569 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:29,570 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_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adcde90e8b053d99359c11706230b2ebf7c2fa95333a62c210d892627b4fe438 [2023-11-19 07:48:29,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:29,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:29,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:29,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:29,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:29,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i [2023-11-19 07:48:33,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:33,328 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:33,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i [2023-11-19 07:48:33,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/data/794fffd4a/58fefcc111ec4939a3c5c7f2c222e3e3/FLAG88da1b6b0 [2023-11-19 07:48:33,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/data/794fffd4a/58fefcc111ec4939a3c5c7f2c222e3e3 [2023-11-19 07:48:33,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:33,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:33,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:33,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:33,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:33,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7ba925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33, skipping insertion in model container [2023-11-19 07:48:33,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,424 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:33,574 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_e684faa1-a2de-4b0a-8b9f-362df116c60e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i[919,932] [2023-11-19 07:48:33,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:33,664 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:33,674 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_e684faa1-a2de-4b0a-8b9f-362df116c60e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i[919,932] [2023-11-19 07:48:33,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:33,751 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:33,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33 WrapperNode [2023-11-19 07:48:33,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:33,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:33,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:33,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:33,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,838 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 257 [2023-11-19 07:48:33,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:33,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:33,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:33,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:33,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:33,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:33,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:33,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:33,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (1/1) ... [2023-11-19 07:48:33,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:33,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:33,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:48:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:48:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:33,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:34,083 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:34,085 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:34,752 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:34,766 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:34,766 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:48:34,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:34 BoogieIcfgContainer [2023-11-19 07:48:34,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:34,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:34,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:34,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:34,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:33" (1/3) ... [2023-11-19 07:48:34,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f602b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:34, skipping insertion in model container [2023-11-19 07:48:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:33" (2/3) ... [2023-11-19 07:48:34,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f602b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:34, skipping insertion in model container [2023-11-19 07:48:34,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:34" (3/3) ... [2023-11-19 07:48:34,788 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-92.i [2023-11-19 07:48:34,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:34,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:48:34,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:34,895 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;@6bb61680, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:34,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:48:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:34,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:34,922 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:34,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 935427055, now seen corresponding path program 1 times [2023-11-19 07:48:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654895197] [2023-11-19 07:48:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654895197] [2023-11-19 07:48:35,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:48:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755386510] [2023-11-19 07:48:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:35,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:35,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:35,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:48:35,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-19 07:48:35,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755386510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:35,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:35,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364394073] [2023-11-19 07:48:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:35,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:35,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:35,696 INFO L87 Difference]: Start difference. First operand has 106 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 69 states have internal predecessors, (100), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-19 07:48:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:35,739 INFO L93 Difference]: Finished difference Result 205 states and 369 transitions. [2023-11-19 07:48:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 223 [2023-11-19 07:48:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:35,751 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:48:35,751 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:48:35,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:35,760 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:35,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:48:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-11-19 07:48:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:48:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 162 transitions. [2023-11-19 07:48:35,840 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 162 transitions. Word has length 223 [2023-11-19 07:48:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:35,841 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 162 transitions. [2023-11-19 07:48:35,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-19 07:48:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 162 transitions. [2023-11-19 07:48:35,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:35,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:35,852 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:35,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:36,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1918365271, now seen corresponding path program 1 times [2023-11-19 07:48:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154810315] [2023-11-19 07:48:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:36,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:36,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918359868] [2023-11-19 07:48:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:36,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:36,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:36,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:48:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:36,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:36,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:37,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154810315] [2023-11-19 07:48:37,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918359868] [2023-11-19 07:48:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918359868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:37,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:37,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8910511] [2023-11-19 07:48:37,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:37,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:37,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:37,446 INFO L87 Difference]: Start difference. First operand 102 states and 162 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:37,549 INFO L93 Difference]: Finished difference Result 271 states and 435 transitions. [2023-11-19 07:48:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:37,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2023-11-19 07:48:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:37,563 INFO L225 Difference]: With dead ends: 271 [2023-11-19 07:48:37,563 INFO L226 Difference]: Without dead ends: 172 [2023-11-19 07:48:37,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:37,570 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 14 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:37,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 290 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-19 07:48:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2023-11-19 07:48:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 98 states have (on average 1.3673469387755102) internal successors, (134), 98 states have internal predecessors, (134), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-19 07:48:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 274 transitions. [2023-11-19 07:48:37,643 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 274 transitions. Word has length 223 [2023-11-19 07:48:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:37,646 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 274 transitions. [2023-11-19 07:48:37,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:37,647 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 274 transitions. [2023-11-19 07:48:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-19 07:48:37,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:37,656 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:37,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:37,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:37,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:37,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1558953575, now seen corresponding path program 1 times [2023-11-19 07:48:37,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:37,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048265544] [2023-11-19 07:48:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:37,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:37,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334307182] [2023-11-19 07:48:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:37,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:37,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:37,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:48:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:38,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:38,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:38,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048265544] [2023-11-19 07:48:38,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334307182] [2023-11-19 07:48:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334307182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:38,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760117644] [2023-11-19 07:48:38,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:38,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:38,924 INFO L87 Difference]: Start difference. First operand 171 states and 274 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:39,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:39,525 INFO L93 Difference]: Finished difference Result 374 states and 599 transitions. [2023-11-19 07:48:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2023-11-19 07:48:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:39,534 INFO L225 Difference]: With dead ends: 374 [2023-11-19 07:48:39,534 INFO L226 Difference]: Without dead ends: 275 [2023-11-19 07:48:39,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:39,537 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 169 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:39,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 633 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:48:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-19 07:48:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 267. [2023-11-19 07:48:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 158 states have (on average 1.379746835443038) internal successors, (218), 158 states have internal predecessors, (218), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:48:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 428 transitions. [2023-11-19 07:48:39,580 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 428 transitions. Word has length 223 [2023-11-19 07:48:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:39,581 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 428 transitions. [2023-11-19 07:48:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 428 transitions. [2023-11-19 07:48:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:39,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:39,586 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:39,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:39,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:39,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:39,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -569650490, now seen corresponding path program 1 times [2023-11-19 07:48:39,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822555476] [2023-11-19 07:48:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:39,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:39,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611882735] [2023-11-19 07:48:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:39,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:39,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:39,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:48:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:40,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:48:40,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:40,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822555476] [2023-11-19 07:48:40,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:40,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611882735] [2023-11-19 07:48:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611882735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:40,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359754578] [2023-11-19 07:48:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:40,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:40,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:40,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:40,911 INFO L87 Difference]: Start difference. First operand 267 states and 428 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:41,006 INFO L93 Difference]: Finished difference Result 472 states and 758 transitions. [2023-11-19 07:48:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:41,011 INFO L225 Difference]: With dead ends: 472 [2023-11-19 07:48:41,011 INFO L226 Difference]: Without dead ends: 277 [2023-11-19 07:48:41,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:41,013 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 19 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:41,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 286 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-19 07:48:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2023-11-19 07:48:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 162 states have (on average 1.376543209876543) internal successors, (223), 162 states have internal predecessors, (223), 105 states have call successors, (105), 3 states have call predecessors, (105), 3 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-19 07:48:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 433 transitions. [2023-11-19 07:48:41,050 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 433 transitions. Word has length 224 [2023-11-19 07:48:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:41,051 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 433 transitions. [2023-11-19 07:48:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 433 transitions. [2023-11-19 07:48:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:41,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:41,056 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:41,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:41,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:41,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2036373064, now seen corresponding path program 1 times [2023-11-19 07:48:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412325925] [2023-11-19 07:48:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:41,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:41,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801693130] [2023-11-19 07:48:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:41,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:41,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:41,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:48:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:41,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:41,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:41,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412325925] [2023-11-19 07:48:41,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801693130] [2023-11-19 07:48:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801693130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:41,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:41,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:41,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424121198] [2023-11-19 07:48:41,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:41,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:41,885 INFO L87 Difference]: Start difference. First operand 271 states and 433 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:42,215 INFO L93 Difference]: Finished difference Result 595 states and 949 transitions. [2023-11-19 07:48:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:42,219 INFO L225 Difference]: With dead ends: 595 [2023-11-19 07:48:42,220 INFO L226 Difference]: Without dead ends: 392 [2023-11-19 07:48:42,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:42,222 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 154 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:42,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 559 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:48:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-19 07:48:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 371. [2023-11-19 07:48:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 226 states have (on average 1.3849557522123894) internal successors, (313), 226 states have internal predecessors, (313), 140 states have call successors, (140), 4 states have call predecessors, (140), 4 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-19 07:48:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 593 transitions. [2023-11-19 07:48:42,274 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 593 transitions. Word has length 224 [2023-11-19 07:48:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:42,275 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 593 transitions. [2023-11-19 07:48:42,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 593 transitions. [2023-11-19 07:48:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-19 07:48:42,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:42,279 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:42,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:42,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2118045622, now seen corresponding path program 1 times [2023-11-19 07:48:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594359975] [2023-11-19 07:48:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:42,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853751365] [2023-11-19 07:48:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:42,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:42,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:42,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:42,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:48:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:42,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:42,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 07:48:43,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:43,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:43,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594359975] [2023-11-19 07:48:43,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:43,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853751365] [2023-11-19 07:48:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853751365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:43,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760308317] [2023-11-19 07:48:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:43,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:43,497 INFO L87 Difference]: Start difference. First operand 371 states and 593 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:43,586 INFO L93 Difference]: Finished difference Result 685 states and 1095 transitions. [2023-11-19 07:48:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:43,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 224 [2023-11-19 07:48:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:43,591 INFO L225 Difference]: With dead ends: 685 [2023-11-19 07:48:43,591 INFO L226 Difference]: Without dead ends: 385 [2023-11-19 07:48:43,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:43,595 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 20 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:43,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 307 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-19 07:48:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 373. [2023-11-19 07:48:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 228 states have (on average 1.381578947368421) internal successors, (315), 228 states have internal predecessors, (315), 140 states have call successors, (140), 4 states have call predecessors, (140), 4 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-19 07:48:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 595 transitions. [2023-11-19 07:48:43,647 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 595 transitions. Word has length 224 [2023-11-19 07:48:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:43,647 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 595 transitions. [2023-11-19 07:48:43,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-19 07:48:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 595 transitions. [2023-11-19 07:48:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-19 07:48:43,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:43,652 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:43,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:43,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -98060127, now seen corresponding path program 1 times [2023-11-19 07:48:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442343288] [2023-11-19 07:48:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:43,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:43,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601062772] [2023-11-19 07:48:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:43,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:48:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:44,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:48:44,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 910 proven. 150 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2023-11-19 07:48:45,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 48 proven. 153 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2023-11-19 07:48:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442343288] [2023-11-19 07:48:46,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601062772] [2023-11-19 07:48:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601062772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:46,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-19 07:48:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913634572] [2023-11-19 07:48:46,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:48:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:48:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:48:46,045 INFO L87 Difference]: Start difference. First operand 373 states and 595 transitions. Second operand has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (70), 4 states have call predecessors, (70), 7 states have return successors, (70), 6 states have call predecessors, (70), 6 states have call successors, (70) [2023-11-19 07:48:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:47,771 INFO L93 Difference]: Finished difference Result 847 states and 1329 transitions. [2023-11-19 07:48:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:48:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (70), 4 states have call predecessors, (70), 7 states have return successors, (70), 6 states have call predecessors, (70), 6 states have call successors, (70) Word has length 225 [2023-11-19 07:48:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:47,777 INFO L225 Difference]: With dead ends: 847 [2023-11-19 07:48:47,777 INFO L226 Difference]: Without dead ends: 547 [2023-11-19 07:48:47,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=737, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:48:47,781 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 313 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:47,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 759 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:48:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-19 07:48:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 379. [2023-11-19 07:48:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 232 states have internal predecessors, (317), 140 states have call successors, (140), 6 states have call predecessors, (140), 6 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-19 07:48:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 597 transitions. [2023-11-19 07:48:47,905 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 597 transitions. Word has length 225 [2023-11-19 07:48:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 597 transitions. [2023-11-19 07:48:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 6 states have call successors, (70), 4 states have call predecessors, (70), 7 states have return successors, (70), 6 states have call predecessors, (70), 6 states have call successors, (70) [2023-11-19 07:48:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 597 transitions. [2023-11-19 07:48:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-19 07:48:47,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:47,911 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:47,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:48,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:48,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:48,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash -87483581, now seen corresponding path program 1 times [2023-11-19 07:48:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573608763] [2023-11-19 07:48:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:48,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113010954] [2023-11-19 07:48:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:48,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:48,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:48,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e684faa1-a2de-4b0a-8b9f-362df116c60e/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:48:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:48,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:48:48,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 910 proven. 150 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2023-11-19 07:49:02,719 INFO L327 TraceCheckSpWp]: Computing backward predicates...