./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b9308720d07799738d2bf3272bc150196623be74b0092d021bdb1b9cd368313 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:51:39,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:51:39,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:51:39,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:51:39,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:51:39,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:51:39,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:51:39,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:51:39,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:51:39,114 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:51:39,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:51:39,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:51:39,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:51:39,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:51:39,117 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:51:39,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:51:39,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:51:39,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:51:39,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:51:39,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:51:39,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:51:39,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:51:39,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:51:39,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:51:39,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:51:39,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:51:39,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:51:39,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:51:39,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:51:39,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:51:39,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:51:39,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:51:39,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:51:39,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:51:39,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:51:39,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:51:39,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:51:39,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:51:39,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:51:39,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:51:39,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:51:39,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:51:39,138 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_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b9308720d07799738d2bf3272bc150196623be74b0092d021bdb1b9cd368313 [2023-11-29 05:51:39,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:51:39,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:51:39,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:51:39,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:51:39,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:51:39,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-11-29 05:51:42,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:51:42,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:51:42,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-11-29 05:51:42,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/data/93ac6397c/6963c3d7a09d4eeebb414be824416b00/FLAG49269825a [2023-11-29 05:51:42,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/data/93ac6397c/6963c3d7a09d4eeebb414be824416b00 [2023-11-29 05:51:42,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:51:42,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:51:42,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:51:42,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:51:42,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:51:42,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8ea2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42, skipping insertion in model container [2023-11-29 05:51:42,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,406 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:51:42,527 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_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i[915,928] [2023-11-29 05:51:42,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:51:42,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:51:42,614 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_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i[915,928] [2023-11-29 05:51:42,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:51:42,665 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:51:42,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42 WrapperNode [2023-11-29 05:51:42,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:51:42,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:51:42,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:51:42,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:51:42,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,730 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2023-11-29 05:51:42,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:51:42,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:51:42,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:51:42,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:51:42,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,766 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:51:42,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:51:42,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:51:42,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:51:42,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:51:42,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (1/1) ... [2023-11-29 05:51:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:51:42,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:42,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:51:42,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:51:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:51:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:51:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:51:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:51:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:51:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:51:42,945 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:51:42,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:51:43,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:51:43,398 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:51:43,398 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:51:43,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:51:43 BoogieIcfgContainer [2023-11-29 05:51:43,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:51:43,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:51:43,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:51:43,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:51:43,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:51:42" (1/3) ... [2023-11-29 05:51:43,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffa135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:51:43, skipping insertion in model container [2023-11-29 05:51:43,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:42" (2/3) ... [2023-11-29 05:51:43,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffa135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:51:43, skipping insertion in model container [2023-11-29 05:51:43,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:51:43" (3/3) ... [2023-11-29 05:51:43,409 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-11-29 05:51:43,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:51:43,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:51:43,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:51:43,484 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;@535d4b64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:51:43,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:51:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 47 states have internal predecessors, (65), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 05:51:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-29 05:51:43,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:43,503 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:43,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 159431118, now seen corresponding path program 1 times [2023-11-29 05:51:43,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:43,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330859482] [2023-11-29 05:51:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330859482] [2023-11-29 05:51:43,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:51:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620359975] [2023-11-29 05:51:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:43,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:43,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:43,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:51:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:43,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:51:43,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-29 05:51:44,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620359975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:51:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406421520] [2023-11-29 05:51:44,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:51:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:51:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:51:44,053 INFO L87 Difference]: Start difference. First operand has 82 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 47 states have internal predecessors, (65), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:51:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:44,093 INFO L93 Difference]: Finished difference Result 161 states and 293 transitions. [2023-11-29 05:51:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:51:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 200 [2023-11-29 05:51:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:44,101 INFO L225 Difference]: With dead ends: 161 [2023-11-29 05:51:44,101 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 05:51:44,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:51:44,109 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:44,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:51:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 05:51:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-29 05:51:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-29 05:51:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2023-11-29 05:51:44,156 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 200 [2023-11-29 05:51:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:44,157 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2023-11-29 05:51:44,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 05:51:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2023-11-29 05:51:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-29 05:51:44,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:44,161 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:44,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:51:44,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:51:44,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:44,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:44,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1116645004, now seen corresponding path program 1 times [2023-11-29 05:51:44,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:44,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161390055] [2023-11-29 05:51:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:44,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:44,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:44,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440157475] [2023-11-29 05:51:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:44,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:44,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:44,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:44,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:51:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:44,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:51:44,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 876 proven. 159 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2023-11-29 05:51:45,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 162 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2023-11-29 05:51:46,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161390055] [2023-11-29 05:51:46,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440157475] [2023-11-29 05:51:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440157475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:46,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 05:51:46,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187705333] [2023-11-29 05:51:46,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:51:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:51:46,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:51:46,074 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) [2023-11-29 05:51:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:46,990 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2023-11-29 05:51:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:51:46,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) Word has length 200 [2023-11-29 05:51:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:46,996 INFO L225 Difference]: With dead ends: 254 [2023-11-29 05:51:46,997 INFO L226 Difference]: Without dead ends: 175 [2023-11-29 05:51:46,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:51:47,001 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 166 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:47,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 265 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:51:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-29 05:51:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 127. [2023-11-29 05:51:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-29 05:51:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2023-11-29 05:51:47,035 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 200 [2023-11-29 05:51:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:47,037 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2023-11-29 05:51:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) [2023-11-29 05:51:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2023-11-29 05:51:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-29 05:51:47,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:47,042 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:47,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:51:47,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:51:47,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:47,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash -84389144, now seen corresponding path program 1 times [2023-11-29 05:51:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:47,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656188838] [2023-11-29 05:51:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:47,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:47,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:47,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345358207] [2023-11-29 05:51:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:47,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:47,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:47,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:51:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:47,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:51:47,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 816 proven. 72 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-11-29 05:51:47,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:51:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656188838] [2023-11-29 05:51:48,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:48,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345358207] [2023-11-29 05:51:48,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345358207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:48,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:48,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 05:51:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589703640] [2023-11-29 05:51:48,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:48,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:51:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:51:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:51:48,210 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-29 05:51:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:50,498 INFO L93 Difference]: Finished difference Result 642 states and 890 transitions. [2023-11-29 05:51:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 05:51:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 201 [2023-11-29 05:51:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:50,505 INFO L225 Difference]: With dead ends: 642 [2023-11-29 05:51:50,506 INFO L226 Difference]: Without dead ends: 516 [2023-11-29 05:51:50,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=950, Invalid=3472, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 05:51:50,510 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1037 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:50,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 755 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:51:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-29 05:51:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 336. [2023-11-29 05:51:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 220 states have (on average 1.2045454545454546) internal successors, (265), 226 states have internal predecessors, (265), 91 states have call successors, (91), 24 states have call predecessors, (91), 24 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-29 05:51:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 447 transitions. [2023-11-29 05:51:50,585 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 447 transitions. Word has length 201 [2023-11-29 05:51:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:50,586 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 447 transitions. [2023-11-29 05:51:50,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-29 05:51:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 447 transitions. [2023-11-29 05:51:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:51:50,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:50,590 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:50,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:51:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 05:51:50,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:50,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash -974162193, now seen corresponding path program 1 times [2023-11-29 05:51:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655276145] [2023-11-29 05:51:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:50,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:50,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440135205] [2023-11-29 05:51:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:50,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:50,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:50,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:50,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:51:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:50,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:51:50,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:51:51,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:51,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:51,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655276145] [2023-11-29 05:51:51,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440135205] [2023-11-29 05:51:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440135205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:51,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:51:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307629688] [2023-11-29 05:51:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:51:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:51:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:51:51,011 INFO L87 Difference]: Start difference. First operand 336 states and 447 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:51:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:51,092 INFO L93 Difference]: Finished difference Result 798 states and 1049 transitions. [2023-11-29 05:51:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:51:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:51:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:51,098 INFO L225 Difference]: With dead ends: 798 [2023-11-29 05:51:51,098 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 05:51:51,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:51:51,101 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 27 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:51,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 241 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:51:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 05:51:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 492. [2023-11-29 05:51:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 340 states have (on average 1.1852941176470588) internal successors, (403), 352 states have internal predecessors, (403), 115 states have call successors, (115), 36 states have call predecessors, (115), 36 states have return successors, (115), 103 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-29 05:51:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 633 transitions. [2023-11-29 05:51:51,169 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 633 transitions. Word has length 202 [2023-11-29 05:51:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 633 transitions. [2023-11-29 05:51:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:51:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 633 transitions. [2023-11-29 05:51:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:51:51,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:51,174 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:51,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:51:51,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:51,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:51,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -916903891, now seen corresponding path program 1 times [2023-11-29 05:51:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578043800] [2023-11-29 05:51:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:51,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167688297] [2023-11-29 05:51:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:51,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:51,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:51,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:51,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:51:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:51,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:51:51,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 05:51:52,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:51:52,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578043800] [2023-11-29 05:51:52,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167688297] [2023-11-29 05:51:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167688297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:52,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:52,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 05:51:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876664655] [2023-11-29 05:51:52,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:52,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:51:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:51:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:51:52,599 INFO L87 Difference]: Start difference. First operand 492 states and 633 transitions. Second operand has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:51:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:54,061 INFO L93 Difference]: Finished difference Result 1420 states and 1830 transitions. [2023-11-29 05:51:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 05:51:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-11-29 05:51:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:54,069 INFO L225 Difference]: With dead ends: 1420 [2023-11-29 05:51:54,069 INFO L226 Difference]: Without dead ends: 966 [2023-11-29 05:51:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=1347, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:51:54,071 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 889 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:54,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 647 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:51:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-29 05:51:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 680. [2023-11-29 05:51:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 466 states have (on average 1.1888412017167382) internal successors, (554), 481 states have internal predecessors, (554), 166 states have call successors, (166), 47 states have call predecessors, (166), 47 states have return successors, (166), 151 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-29 05:51:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 886 transitions. [2023-11-29 05:51:54,153 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 886 transitions. Word has length 202 [2023-11-29 05:51:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:54,154 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 886 transitions. [2023-11-29 05:51:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:51:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 886 transitions. [2023-11-29 05:51:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:51:54,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:54,156 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:54,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:51:54,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:54,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -330097877, now seen corresponding path program 1 times [2023-11-29 05:51:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886801069] [2023-11-29 05:51:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:54,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498708254] [2023-11-29 05:51:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:54,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:54,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:54,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:54,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:51:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:54,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:51:54,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 05:51:55,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:51:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886801069] [2023-11-29 05:51:55,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498708254] [2023-11-29 05:51:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498708254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:55,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 05:51:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354056666] [2023-11-29 05:51:55,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:51:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:51:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:51:55,577 INFO L87 Difference]: Start difference. First operand 680 states and 886 transitions. Second operand has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:51:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:51:57,080 INFO L93 Difference]: Finished difference Result 1252 states and 1656 transitions. [2023-11-29 05:51:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:51:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-11-29 05:51:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:51:57,085 INFO L225 Difference]: With dead ends: 1252 [2023-11-29 05:51:57,086 INFO L226 Difference]: Without dead ends: 794 [2023-11-29 05:51:57,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 05:51:57,088 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 494 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:51:57,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 570 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:51:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-29 05:51:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 344. [2023-11-29 05:51:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 221 states have (on average 1.1538461538461537) internal successors, (255), 226 states have internal predecessors, (255), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:51:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 453 transitions. [2023-11-29 05:51:57,200 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 453 transitions. Word has length 202 [2023-11-29 05:51:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:51:57,201 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 453 transitions. [2023-11-29 05:51:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:51:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 453 transitions. [2023-11-29 05:51:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:51:57,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:51:57,203 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:57,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:51:57,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:57,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:51:57,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2098199727, now seen corresponding path program 1 times [2023-11-29 05:51:57,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:57,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950083555] [2023-11-29 05:51:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:57,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:57,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:51:57,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363869758] [2023-11-29 05:51:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:57,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:51:57,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:57,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:51:57,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:51:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:57,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 05:51:57,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 05:51:58,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:51:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:51:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950083555] [2023-11-29 05:51:59,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:51:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363869758] [2023-11-29 05:51:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363869758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:51:59,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:51:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 05:51:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661330776] [2023-11-29 05:51:59,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:51:59,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:51:59,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:51:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:51:59,198 INFO L87 Difference]: Start difference. First operand 344 states and 453 transitions. Second operand has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:52:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:00,259 INFO L93 Difference]: Finished difference Result 680 states and 882 transitions. [2023-11-29 05:52:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:52:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-11-29 05:52:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:00,263 INFO L225 Difference]: With dead ends: 680 [2023-11-29 05:52:00,264 INFO L226 Difference]: Without dead ends: 419 [2023-11-29 05:52:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:52:00,266 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 590 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:00,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 458 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:52:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-29 05:52:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 347. [2023-11-29 05:52:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 224 states have (on average 1.1473214285714286) internal successors, (257), 229 states have internal predecessors, (257), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:52:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 455 transitions. [2023-11-29 05:52:00,338 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 455 transitions. Word has length 202 [2023-11-29 05:52:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 455 transitions. [2023-11-29 05:52:00,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:52:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 455 transitions. [2023-11-29 05:52:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:00,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:00,341 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:00,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:52:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:00,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1609961555, now seen corresponding path program 1 times [2023-11-29 05:52:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134702344] [2023-11-29 05:52:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:00,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:00,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185851417] [2023-11-29 05:52:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:00,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:00,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:00,567 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:00,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:52:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:00,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 05:52:00,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-29 05:52:08,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:52:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134702344] [2023-11-29 05:52:15,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:52:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185851417] [2023-11-29 05:52:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185851417] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 05:52:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262347097] [2023-11-29 05:52:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:52:15,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:52:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:52:15,563 INFO L87 Difference]: Start difference. First operand 347 states and 455 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:16,792 INFO L93 Difference]: Finished difference Result 753 states and 964 transitions. [2023-11-29 05:52:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:52:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:52:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:16,796 INFO L225 Difference]: With dead ends: 753 [2023-11-29 05:52:16,796 INFO L226 Difference]: Without dead ends: 527 [2023-11-29 05:52:16,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:52:16,798 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 221 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:16,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 430 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:52:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-29 05:52:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 371. [2023-11-29 05:52:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 248 states have (on average 1.153225806451613) internal successors, (286), 253 states have internal predecessors, (286), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:52:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 484 transitions. [2023-11-29 05:52:16,919 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 484 transitions. Word has length 202 [2023-11-29 05:52:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:16,920 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 484 transitions. [2023-11-29 05:52:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 484 transitions. [2023-11-29 05:52:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:16,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:16,922 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:16,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:52:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:17,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -966155279, now seen corresponding path program 1 times [2023-11-29 05:52:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339458274] [2023-11-29 05:52:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:17,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:17,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242277109] [2023-11-29 05:52:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:17,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:17,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:17,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:17,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:52:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:17,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:52:17,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:52:17,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339458274] [2023-11-29 05:52:17,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:52:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242277109] [2023-11-29 05:52:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242277109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:17,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:17,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:52:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706907284] [2023-11-29 05:52:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:17,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:17,317 INFO L87 Difference]: Start difference. First operand 371 states and 484 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:17,503 INFO L93 Difference]: Finished difference Result 645 states and 839 transitions. [2023-11-29 05:52:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:52:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:52:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:17,505 INFO L225 Difference]: With dead ends: 645 [2023-11-29 05:52:17,505 INFO L226 Difference]: Without dead ends: 379 [2023-11-29 05:52:17,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:52:17,506 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:17,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 330 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:52:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-29 05:52:17,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 374. [2023-11-29 05:52:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 251 states have (on average 1.1474103585657371) internal successors, (288), 256 states have internal predecessors, (288), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:52:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 486 transitions. [2023-11-29 05:52:17,585 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 486 transitions. Word has length 202 [2023-11-29 05:52:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:17,585 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 486 transitions. [2023-11-29 05:52:17,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 486 transitions. [2023-11-29 05:52:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:17,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:17,588 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:17,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:52:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:17,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:17,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1351796117, now seen corresponding path program 1 times [2023-11-29 05:52:17,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:17,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507935471] [2023-11-29 05:52:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:17,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575420806] [2023-11-29 05:52:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:17,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:17,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:52:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:18,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:52:18,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-29 05:52:33,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:52:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507935471] [2023-11-29 05:52:40,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:52:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575420806] [2023-11-29 05:52:40,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575420806] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-11-29 05:52:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582550377] [2023-11-29 05:52:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:40,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:52:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:52:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:52:40,367 INFO L87 Difference]: Start difference. First operand 374 states and 486 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:41,938 INFO L93 Difference]: Finished difference Result 677 states and 866 transitions. [2023-11-29 05:52:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:52:41,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:52:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:41,943 INFO L225 Difference]: With dead ends: 677 [2023-11-29 05:52:41,943 INFO L226 Difference]: Without dead ends: 437 [2023-11-29 05:52:41,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:52:41,945 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 152 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:41,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 592 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:52:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-29 05:52:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2023-11-29 05:52:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 250 states have (on average 1.148) internal successors, (287), 255 states have internal predecessors, (287), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 05:52:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 485 transitions. [2023-11-29 05:52:42,053 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 485 transitions. Word has length 202 [2023-11-29 05:52:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:42,053 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 485 transitions. [2023-11-29 05:52:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 485 transitions. [2023-11-29 05:52:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:42,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:42,055 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:42,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:52:42,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:42,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:42,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2140818634, now seen corresponding path program 1 times [2023-11-29 05:52:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817387355] [2023-11-29 05:52:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:42,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:42,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595962208] [2023-11-29 05:52:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:42,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:42,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:42,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:42,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:52:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:42,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:52:42,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:52:42,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:52:42,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:42,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817387355] [2023-11-29 05:52:42,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:52:42,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595962208] [2023-11-29 05:52:42,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595962208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:42,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:42,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:52:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80017077] [2023-11-29 05:52:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:42,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:42,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:42,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:42,421 INFO L87 Difference]: Start difference. First operand 373 states and 485 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:42,591 INFO L93 Difference]: Finished difference Result 613 states and 787 transitions. [2023-11-29 05:52:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:52:42,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:52:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:42,594 INFO L225 Difference]: With dead ends: 613 [2023-11-29 05:52:42,594 INFO L226 Difference]: Without dead ends: 368 [2023-11-29 05:52:42,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:52:42,596 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 51 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:42,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 319 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:52:42,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-29 05:52:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 320. [2023-11-29 05:52:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 213 states have internal predecessors, (236), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:52:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2023-11-29 05:52:42,691 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 202 [2023-11-29 05:52:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:42,692 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2023-11-29 05:52:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2023-11-29 05:52:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:42,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:42,693 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:42,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:52:42,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:52:42,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:42,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1690533322, now seen corresponding path program 1 times [2023-11-29 05:52:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:42,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043140414] [2023-11-29 05:52:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:42,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:42,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:42,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249155089] [2023-11-29 05:52:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:42,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:42,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:52:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:43,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 05:52:43,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 822 proven. 246 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-29 05:52:45,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:52:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043140414] [2023-11-29 05:52:54,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:52:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249155089] [2023-11-29 05:52:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249155089] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:54,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-11-29 05:52:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410905934] [2023-11-29 05:52:54,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:52:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:52:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:52:54,347 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:52:55,945 INFO L93 Difference]: Finished difference Result 520 states and 667 transitions. [2023-11-29 05:52:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:52:55,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:52:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:52:55,947 INFO L225 Difference]: With dead ends: 520 [2023-11-29 05:52:55,948 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 05:52:55,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:52:55,949 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 129 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:52:55,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 583 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:52:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 05:52:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 328. [2023-11-29 05:52:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 221 states have internal predecessors, (246), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:52:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 420 transitions. [2023-11-29 05:52:56,014 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 420 transitions. Word has length 202 [2023-11-29 05:52:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:52:56,015 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 420 transitions. [2023-11-29 05:52:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:52:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 420 transitions. [2023-11-29 05:52:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 05:52:56,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:52:56,017 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:56,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:52:56,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:56,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:52:56,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1903369396, now seen corresponding path program 1 times [2023-11-29 05:52:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274471126] [2023-11-29 05:52:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:56,236 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:52:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154345396] [2023-11-29 05:52:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:52:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:52:56,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:52:56,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:52:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:56,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:52:56,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 822 proven. 246 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-11-29 05:52:58,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:53:05,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274471126] [2023-11-29 05:53:05,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:53:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154345396] [2023-11-29 05:53:05,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154345396] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:05,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-11-29 05:53:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552493721] [2023-11-29 05:53:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:53:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:53:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:53:05,088 INFO L87 Difference]: Start difference. First operand 328 states and 420 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:53:06,575 INFO L93 Difference]: Finished difference Result 528 states and 676 transitions. [2023-11-29 05:53:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:53:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-11-29 05:53:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:53:06,577 INFO L225 Difference]: With dead ends: 528 [2023-11-29 05:53:06,577 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 05:53:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:53:06,579 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 169 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:53:06,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 491 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:53:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 05:53:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 328. [2023-11-29 05:53:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 221 states have internal predecessors, (246), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:53:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 420 transitions. [2023-11-29 05:53:06,644 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 420 transitions. Word has length 202 [2023-11-29 05:53:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:06,645 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 420 transitions. [2023-11-29 05:53:06,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 420 transitions. [2023-11-29 05:53:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:53:06,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:06,646 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:06,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 05:53:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:06,847 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:06,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1556668622, now seen corresponding path program 1 times [2023-11-29 05:53:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421252794] [2023-11-29 05:53:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:06,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:53:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590616364] [2023-11-29 05:53:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:06,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:06,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:06,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:53:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:07,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 05:53:07,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 956 proven. 546 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-29 05:53:33,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:53:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421252794] [2023-11-29 05:53:41,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:53:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590616364] [2023-11-29 05:53:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590616364] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [41] total 49 [2023-11-29 05:53:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871859080] [2023-11-29 05:53:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:53:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:53:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 05:53:41,115 INFO L87 Difference]: Start difference. First operand 328 states and 420 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:53:41,882 INFO L93 Difference]: Finished difference Result 623 states and 785 transitions. [2023-11-29 05:53:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:53:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-11-29 05:53:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:53:41,886 INFO L225 Difference]: With dead ends: 623 [2023-11-29 05:53:41,886 INFO L226 Difference]: Without dead ends: 414 [2023-11-29 05:53:41,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=532, Invalid=2224, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 05:53:41,888 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 128 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:53:41,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 390 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:53:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-11-29 05:53:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 331. [2023-11-29 05:53:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 222 states have (on average 1.135135135135135) internal successors, (252), 224 states have internal predecessors, (252), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:53:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 426 transitions. [2023-11-29 05:53:41,954 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 426 transitions. Word has length 203 [2023-11-29 05:53:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:41,954 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 426 transitions. [2023-11-29 05:53:41,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 426 transitions. [2023-11-29 05:53:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:53:41,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:41,956 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:41,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:53:42,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:53:42,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:42,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2094492398, now seen corresponding path program 1 times [2023-11-29 05:53:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572591952] [2023-11-29 05:53:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:42,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:53:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359320360] [2023-11-29 05:53:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:42,173 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:42,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:53:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:42,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:53:42,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 05:53:42,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:53:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572591952] [2023-11-29 05:53:43,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:53:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359320360] [2023-11-29 05:53:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359320360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:53:43,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:53:43,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-11-29 05:53:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783545850] [2023-11-29 05:53:43,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:53:43,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:53:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:53:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:53:43,087 INFO L87 Difference]: Start difference. First operand 331 states and 426 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:53:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:53:44,020 INFO L93 Difference]: Finished difference Result 638 states and 803 transitions. [2023-11-29 05:53:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:53:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 203 [2023-11-29 05:53:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:53:44,023 INFO L225 Difference]: With dead ends: 638 [2023-11-29 05:53:44,023 INFO L226 Difference]: Without dead ends: 417 [2023-11-29 05:53:44,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:53:44,025 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 462 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:53:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 479 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:53:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-29 05:53:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 325. [2023-11-29 05:53:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.1296296296296295) internal successors, (244), 218 states have internal predecessors, (244), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:53:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 418 transitions. [2023-11-29 05:53:44,109 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 418 transitions. Word has length 203 [2023-11-29 05:53:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 418 transitions. [2023-11-29 05:53:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-29 05:53:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 418 transitions. [2023-11-29 05:53:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:53:44,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:44,112 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:44,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:53:44,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:53:44,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:44,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1814834060, now seen corresponding path program 1 times [2023-11-29 05:53:44,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:44,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865929732] [2023-11-29 05:53:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:44,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:44,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:53:44,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601305668] [2023-11-29 05:53:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:44,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:44,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:53:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:44,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 05:53:44,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:53:51,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:53:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:51,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865929732] [2023-11-29 05:53:51,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:53:51,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601305668] [2023-11-29 05:53:51,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601305668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:51,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:53:51,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:53:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319493741] [2023-11-29 05:53:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:53:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:53:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:53:51,425 INFO L87 Difference]: Start difference. First operand 325 states and 418 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:53:55,769 INFO L93 Difference]: Finished difference Result 644 states and 806 transitions. [2023-11-29 05:53:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:53:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-11-29 05:53:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:53:55,772 INFO L225 Difference]: With dead ends: 644 [2023-11-29 05:53:55,772 INFO L226 Difference]: Without dead ends: 433 [2023-11-29 05:53:55,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:53:55,773 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 148 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:53:55,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 500 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:53:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-29 05:53:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 313. [2023-11-29 05:53:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:53:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 404 transitions. [2023-11-29 05:53:55,843 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 404 transitions. Word has length 203 [2023-11-29 05:53:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:53:55,844 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 404 transitions. [2023-11-29 05:53:55,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:53:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 404 transitions. [2023-11-29 05:53:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:53:55,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:53:55,845 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:55,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:53:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:53:56,046 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:53:56,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1179406544, now seen corresponding path program 1 times [2023-11-29 05:53:56,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178877132] [2023-11-29 05:53:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:56,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:53:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477887000] [2023-11-29 05:53:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:53:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:53:56,065 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:53:56,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:53:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:56,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 05:53:56,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-29 05:54:05,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:54:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:54:10,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178877132] [2023-11-29 05:54:10,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:54:10,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477887000] [2023-11-29 05:54:10,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477887000] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:54:10,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:54:10,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 05:54:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585000903] [2023-11-29 05:54:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:10,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:54:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:54:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:54:10,811 INFO L87 Difference]: Start difference. First operand 313 states and 404 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:54:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:54:12,192 INFO L93 Difference]: Finished difference Result 547 states and 699 transitions. [2023-11-29 05:54:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:54:12,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-11-29 05:54:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:54:12,195 INFO L225 Difference]: With dead ends: 547 [2023-11-29 05:54:12,195 INFO L226 Difference]: Without dead ends: 376 [2023-11-29 05:54:12,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:54:12,196 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 147 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:54:12,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 714 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:54:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-29 05:54:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 319. [2023-11-29 05:54:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 210 states have (on average 1.1285714285714286) internal successors, (237), 212 states have internal predecessors, (237), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:54:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 411 transitions. [2023-11-29 05:54:12,303 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 411 transitions. Word has length 203 [2023-11-29 05:54:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:54:12,303 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 411 transitions. [2023-11-29 05:54:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:54:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 411 transitions. [2023-11-29 05:54:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:54:12,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:54:12,304 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:12,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:54:12,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:54:12,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:54:12,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1437571982, now seen corresponding path program 1 times [2023-11-29 05:54:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073554347] [2023-11-29 05:54:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:12,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:54:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861285097] [2023-11-29 05:54:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:12,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:54:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:12,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:54:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:54:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:12,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:54:12,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 05:54:21,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:54:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-29 05:54:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:26,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073554347] [2023-11-29 05:54:26,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:54:26,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861285097] [2023-11-29 05:54:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861285097] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:54:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:54:26,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2023-11-29 05:54:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851459073] [2023-11-29 05:54:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:26,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:54:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:54:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:54:26,417 INFO L87 Difference]: Start difference. First operand 319 states and 411 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:54:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:54:27,636 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2023-11-29 05:54:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:54:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-11-29 05:54:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:54:27,639 INFO L225 Difference]: With dead ends: 553 [2023-11-29 05:54:27,639 INFO L226 Difference]: Without dead ends: 376 [2023-11-29 05:54:27,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:54:27,640 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 138 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:54:27,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 561 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:54:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-29 05:54:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 316. [2023-11-29 05:54:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 207 states have (on average 1.1256038647342994) internal successors, (233), 209 states have internal predecessors, (233), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 05:54:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 407 transitions. [2023-11-29 05:54:27,711 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 407 transitions. Word has length 203 [2023-11-29 05:54:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:54:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 407 transitions. [2023-11-29 05:54:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-29 05:54:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 407 transitions. [2023-11-29 05:54:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 05:54:27,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:54:27,712 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:27,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 05:54:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:54:27,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:54:27,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 601389967, now seen corresponding path program 1 times [2023-11-29 05:54:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:27,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121049260] [2023-11-29 05:54:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:27,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:54:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877798153] [2023-11-29 05:54:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:54:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:27,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:54:27,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ad7f57c-ffdd-4bff-9d9f-d804148b4f2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:54:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:28,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 05:54:28,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 6 proven. 90 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-29 05:56:01,204 INFO L327 TraceCheckSpWp]: Computing backward predicates...