./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04a66e3f5e0c01de9542e5e7b3340b25c89da9661ce4bdf3a3b49f3763c62dc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:08,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:08,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:46:08,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:08,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:08,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:08,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:08,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:08,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:08,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:08,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:08,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:08,808 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:08,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:08,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:08,811 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:08,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:08,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:08,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:08,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:08,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:08,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:08,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:08,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:08,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:08,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:08,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:08,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:08,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:08,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:08,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:08,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:08,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:08,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:08,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:08,821 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:08,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:08,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:08,822 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:08,822 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_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a66e3f5e0c01de9542e5e7b3340b25c89da9661ce4bdf3a3b49f3763c62dc2 [2023-11-19 07:46:09,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:09,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:09,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:09,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:09,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:09,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-11-19 07:46:12,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:12,832 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:12,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-11-19 07:46:12,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/data/2cfe0acbf/b1a06cdfbe7a4a2fbf1abd1be6d404ab/FLAG9a9e1bdcd [2023-11-19 07:46:12,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/data/2cfe0acbf/b1a06cdfbe7a4a2fbf1abd1be6d404ab [2023-11-19 07:46:12,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:12,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:12,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:12,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:12,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:12,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:12" (1/1) ... [2023-11-19 07:46:12,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15440bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:12, skipping insertion in model container [2023-11-19 07:46:12,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:12" (1/1) ... [2023-11-19 07:46:12,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:13,179 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_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i[916,929] [2023-11-19 07:46:13,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:13,449 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:13,463 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_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i[916,929] [2023-11-19 07:46:13,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:13,677 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:13,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13 WrapperNode [2023-11-19 07:46:13,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:13,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:13,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:13,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:13,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,877 INFO L138 Inliner]: procedures = 26, calls = 132, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 906 [2023-11-19 07:46:13,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:13,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:13,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:13,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:13,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:13,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:13,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:13,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:13,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (1/1) ... [2023-11-19 07:46:13,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:14,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:14,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:46:14,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:46:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:14,276 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:14,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:15,820 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:15,842 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:15,842 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:46:15,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:15 BoogieIcfgContainer [2023-11-19 07:46:15,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:15,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:15,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:15,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:15,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:12" (1/3) ... [2023-11-19 07:46:15,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3414f555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:15, skipping insertion in model container [2023-11-19 07:46:15,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:13" (2/3) ... [2023-11-19 07:46:15,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3414f555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:15, skipping insertion in model container [2023-11-19 07:46:15,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:15" (3/3) ... [2023-11-19 07:46:15,870 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-11-19 07:46:15,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:15,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:46:15,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:15,991 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;@7cbee08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:15,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:46:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 235 states have (on average 1.6382978723404256) internal successors, (385), 236 states have internal predecessors, (385), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:46:16,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-19 07:46:16,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:16,060 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:16,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:16,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash 44967896, now seen corresponding path program 1 times [2023-11-19 07:46:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045322052] [2023-11-19 07:46:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045322052] [2023-11-19 07:46:16,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:46:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465953232] [2023-11-19 07:46:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:16,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:16,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:46:17,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 27848 trivial. 0 not checked. [2023-11-19 07:46:17,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465953232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658033386] [2023-11-19 07:46:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:17,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:17,732 INFO L87 Difference]: Start difference. First operand has 357 states, 235 states have (on average 1.6382978723404256) internal successors, (385), 236 states have internal predecessors, (385), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-11-19 07:46:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:17,836 INFO L93 Difference]: Finished difference Result 703 states and 1351 transitions. [2023-11-19 07:46:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) Word has length 755 [2023-11-19 07:46:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:17,853 INFO L225 Difference]: With dead ends: 703 [2023-11-19 07:46:17,854 INFO L226 Difference]: Without dead ends: 349 [2023-11-19 07:46:17,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:17,868 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:17,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-19 07:46:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-11-19 07:46:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 228 states have (on average 1.5833333333333333) internal successors, (361), 228 states have internal predecessors, (361), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:46:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 599 transitions. [2023-11-19 07:46:18,027 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 599 transitions. Word has length 755 [2023-11-19 07:46:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:18,028 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 599 transitions. [2023-11-19 07:46:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-11-19 07:46:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 599 transitions. [2023-11-19 07:46:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-19 07:46:18,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:18,059 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:18,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:18,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:46:18,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:18,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1539814094, now seen corresponding path program 1 times [2023-11-19 07:46:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:18,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848267725] [2023-11-19 07:46:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:18,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557208321] [2023-11-19 07:46:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:18,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:18,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:18,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:19,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:19,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:19,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:19,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848267725] [2023-11-19 07:46:19,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557208321] [2023-11-19 07:46:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557208321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:19,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:19,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183428727] [2023-11-19 07:46:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:19,544 INFO L87 Difference]: Start difference. First operand 349 states and 599 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:19,702 INFO L93 Difference]: Finished difference Result 909 states and 1567 transitions. [2023-11-19 07:46:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 755 [2023-11-19 07:46:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:19,714 INFO L225 Difference]: With dead ends: 909 [2023-11-19 07:46:19,715 INFO L226 Difference]: Without dead ends: 563 [2023-11-19 07:46:19,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:19,720 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 340 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:19,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1256 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-19 07:46:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2023-11-19 07:46:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 385 states have (on average 1.6181818181818182) internal successors, (623), 386 states have internal predecessors, (623), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 171 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-19 07:46:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 967 transitions. [2023-11-19 07:46:19,818 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 967 transitions. Word has length 755 [2023-11-19 07:46:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:19,822 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 967 transitions. [2023-11-19 07:46:19,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 967 transitions. [2023-11-19 07:46:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-19 07:46:19,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:19,838 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:19,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:20,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:20,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash 397311628, now seen corresponding path program 1 times [2023-11-19 07:46:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577182497] [2023-11-19 07:46:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:20,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083534154] [2023-11-19 07:46:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:20,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:20,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:20,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:20,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577182497] [2023-11-19 07:46:20,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:20,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083534154] [2023-11-19 07:46:20,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083534154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:20,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:20,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710822527] [2023-11-19 07:46:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:20,947 INFO L87 Difference]: Start difference. First operand 560 states and 967 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:21,010 INFO L93 Difference]: Finished difference Result 1119 states and 1935 transitions. [2023-11-19 07:46:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:21,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 755 [2023-11-19 07:46:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:21,027 INFO L225 Difference]: With dead ends: 1119 [2023-11-19 07:46:21,027 INFO L226 Difference]: Without dead ends: 562 [2023-11-19 07:46:21,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:21,033 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 0 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:21,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-19 07:46:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-19 07:46:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 387 states have (on average 1.6149870801033592) internal successors, (625), 388 states have internal predecessors, (625), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 171 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-19 07:46:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 969 transitions. [2023-11-19 07:46:21,134 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 969 transitions. Word has length 755 [2023-11-19 07:46:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:21,138 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 969 transitions. [2023-11-19 07:46:21,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 969 transitions. [2023-11-19 07:46:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-19 07:46:21,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:21,152 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:21,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:21,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:21,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:21,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -818842098, now seen corresponding path program 1 times [2023-11-19 07:46:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396288032] [2023-11-19 07:46:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:21,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553535697] [2023-11-19 07:46:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:21,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:21,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:21,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:46:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:22,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:22,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:22,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:22,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396288032] [2023-11-19 07:46:22,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553535697] [2023-11-19 07:46:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553535697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:22,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554912470] [2023-11-19 07:46:22,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:22,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:22,359 INFO L87 Difference]: Start difference. First operand 562 states and 969 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:22,485 INFO L93 Difference]: Finished difference Result 1513 states and 2623 transitions. [2023-11-19 07:46:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 755 [2023-11-19 07:46:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:22,498 INFO L225 Difference]: With dead ends: 1513 [2023-11-19 07:46:22,498 INFO L226 Difference]: Without dead ends: 954 [2023-11-19 07:46:22,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:22,509 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 297 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:22,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-11-19 07:46:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 950. [2023-11-19 07:46:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 705 states have (on average 1.6453900709219857) internal successors, (1160), 708 states have internal predecessors, (1160), 240 states have call successors, (240), 4 states have call predecessors, (240), 4 states have return successors, (240), 237 states have call predecessors, (240), 240 states have call successors, (240) [2023-11-19 07:46:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1640 transitions. [2023-11-19 07:46:22,629 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1640 transitions. Word has length 755 [2023-11-19 07:46:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:22,631 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1640 transitions. [2023-11-19 07:46:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1640 transitions. [2023-11-19 07:46:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-19 07:46:22,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:22,644 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:22,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:22,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:22,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:22,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 82338962, now seen corresponding path program 1 times [2023-11-19 07:46:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011786399] [2023-11-19 07:46:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:22,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33851162] [2023-11-19 07:46:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:22,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:22,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:22,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:23,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:46:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:23,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:23,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:23,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011786399] [2023-11-19 07:46:23,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:23,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33851162] [2023-11-19 07:46:23,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33851162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:23,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855311328] [2023-11-19 07:46:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:23,803 INFO L87 Difference]: Start difference. First operand 950 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:23,939 INFO L93 Difference]: Finished difference Result 2647 states and 4574 transitions. [2023-11-19 07:46:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 755 [2023-11-19 07:46:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:23,958 INFO L225 Difference]: With dead ends: 2647 [2023-11-19 07:46:23,959 INFO L226 Difference]: Without dead ends: 1700 [2023-11-19 07:46:23,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:23,964 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 344 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:23,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1430 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-11-19 07:46:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1696. [2023-11-19 07:46:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1281 states have (on average 1.650273224043716) internal successors, (2114), 1288 states have internal predecessors, (2114), 406 states have call successors, (406), 8 states have call predecessors, (406), 8 states have return successors, (406), 399 states have call predecessors, (406), 406 states have call successors, (406) [2023-11-19 07:46:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2926 transitions. [2023-11-19 07:46:24,155 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2926 transitions. Word has length 755 [2023-11-19 07:46:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:24,156 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2926 transitions. [2023-11-19 07:46:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2926 transitions. [2023-11-19 07:46:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:24,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:24,170 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:24,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:24,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:24,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 446798882, now seen corresponding path program 1 times [2023-11-19 07:46:24,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888045264] [2023-11-19 07:46:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:24,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:24,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906699089] [2023-11-19 07:46:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:24,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:24,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:24,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:46:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:25,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:25,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:25,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:25,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:25,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888045264] [2023-11-19 07:46:25,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:25,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906699089] [2023-11-19 07:46:25,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906699089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:25,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:25,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943478230] [2023-11-19 07:46:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:25,358 INFO L87 Difference]: Start difference. First operand 1696 states and 2926 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:25,570 INFO L93 Difference]: Finished difference Result 4845 states and 8362 transitions. [2023-11-19 07:46:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 756 [2023-11-19 07:46:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:25,608 INFO L225 Difference]: With dead ends: 4845 [2023-11-19 07:46:25,608 INFO L226 Difference]: Without dead ends: 3152 [2023-11-19 07:46:25,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:25,617 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 305 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:25,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1164 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2023-11-19 07:46:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 3146. [2023-11-19 07:46:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 2399 states have (on average 1.6490204251771572) internal successors, (3956), 2414 states have internal predecessors, (3956), 730 states have call successors, (730), 16 states have call predecessors, (730), 16 states have return successors, (730), 715 states have call predecessors, (730), 730 states have call successors, (730) [2023-11-19 07:46:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 5416 transitions. [2023-11-19 07:46:25,992 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 5416 transitions. Word has length 756 [2023-11-19 07:46:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:25,994 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 5416 transitions. [2023-11-19 07:46:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 5416 transitions. [2023-11-19 07:46:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:26,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:26,011 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:26,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:46:26,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:26,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash -370849568, now seen corresponding path program 1 times [2023-11-19 07:46:26,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:26,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355970639] [2023-11-19 07:46:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:26,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199972031] [2023-11-19 07:46:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:26,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:26,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:46:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:27,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:27,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:27,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355970639] [2023-11-19 07:46:27,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199972031] [2023-11-19 07:46:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199972031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:27,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:27,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:27,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458086220] [2023-11-19 07:46:27,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:27,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:27,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:27,173 INFO L87 Difference]: Start difference. First operand 3146 states and 5416 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:27,596 INFO L93 Difference]: Finished difference Result 9400 states and 16178 transitions. [2023-11-19 07:46:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 756 [2023-11-19 07:46:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:27,655 INFO L225 Difference]: With dead ends: 9400 [2023-11-19 07:46:27,655 INFO L226 Difference]: Without dead ends: 6257 [2023-11-19 07:46:27,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:27,677 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 566 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:27,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1584 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2023-11-19 07:46:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6238. [2023-11-19 07:46:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 4745 states have (on average 1.625922023182297) internal successors, (7715), 4775 states have internal predecessors, (7715), 1460 states have call successors, (1460), 32 states have call predecessors, (1460), 32 states have return successors, (1460), 1430 states have call predecessors, (1460), 1460 states have call successors, (1460) [2023-11-19 07:46:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 10635 transitions. [2023-11-19 07:46:28,350 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 10635 transitions. Word has length 756 [2023-11-19 07:46:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:28,351 INFO L495 AbstractCegarLoop]: Abstraction has 6238 states and 10635 transitions. [2023-11-19 07:46:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 10635 transitions. [2023-11-19 07:46:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:28,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:28,369 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:28,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:46:28,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:28,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash -131520608, now seen corresponding path program 1 times [2023-11-19 07:46:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31483485] [2023-11-19 07:46:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:28,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:28,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386647031] [2023-11-19 07:46:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:28,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:28,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:46:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:29,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:46:29,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:29,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31483485] [2023-11-19 07:46:29,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386647031] [2023-11-19 07:46:29,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386647031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:29,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:29,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:29,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371448817] [2023-11-19 07:46:29,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:29,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:29,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:29,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:29,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:29,382 INFO L87 Difference]: Start difference. First operand 6238 states and 10635 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:29,991 INFO L93 Difference]: Finished difference Result 18708 states and 31899 transitions. [2023-11-19 07:46:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:30,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 756 [2023-11-19 07:46:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:30,123 INFO L225 Difference]: With dead ends: 18708 [2023-11-19 07:46:30,123 INFO L226 Difference]: Without dead ends: 12473 [2023-11-19 07:46:30,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:30,149 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 572 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:30,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1200 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12473 states. [2023-11-19 07:46:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12473 to 12471. [2023-11-19 07:46:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12471 states, 9486 states have (on average 1.61606578115117) internal successors, (15330), 9546 states have internal predecessors, (15330), 2920 states have call successors, (2920), 64 states have call predecessors, (2920), 64 states have return successors, (2920), 2860 states have call predecessors, (2920), 2920 states have call successors, (2920) [2023-11-19 07:46:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12471 states to 12471 states and 21170 transitions. [2023-11-19 07:46:31,711 INFO L78 Accepts]: Start accepts. Automaton has 12471 states and 21170 transitions. Word has length 756 [2023-11-19 07:46:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 12471 states and 21170 transitions. [2023-11-19 07:46:31,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 12471 states and 21170 transitions. [2023-11-19 07:46:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:31,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:31,737 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:31,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:31,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:31,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:31,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1411384286, now seen corresponding path program 1 times [2023-11-19 07:46:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831501040] [2023-11-19 07:46:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:32,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018554393] [2023-11-19 07:46:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:32,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:32,055 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:32,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:46:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:32,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:32,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:32,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831501040] [2023-11-19 07:46:32,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:32,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018554393] [2023-11-19 07:46:32,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018554393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:32,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:32,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025064061] [2023-11-19 07:46:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:32,699 INFO L87 Difference]: Start difference. First operand 12471 states and 21170 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:33,406 INFO L93 Difference]: Finished difference Result 25025 states and 42482 transitions. [2023-11-19 07:46:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:33,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 756 [2023-11-19 07:46:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:33,454 INFO L225 Difference]: With dead ends: 25025 [2023-11-19 07:46:33,454 INFO L226 Difference]: Without dead ends: 12557 [2023-11-19 07:46:33,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:33,497 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 239 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:33,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2027 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12557 states. [2023-11-19 07:46:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12557 to 8983. [2023-11-19 07:46:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8983 states, 7354 states have (on average 1.6641283655153658) internal successors, (12238), 7382 states have internal predecessors, (12238), 1592 states have call successors, (1592), 36 states have call predecessors, (1592), 36 states have return successors, (1592), 1564 states have call predecessors, (1592), 1592 states have call successors, (1592) [2023-11-19 07:46:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8983 states to 8983 states and 15422 transitions. [2023-11-19 07:46:34,457 INFO L78 Accepts]: Start accepts. Automaton has 8983 states and 15422 transitions. Word has length 756 [2023-11-19 07:46:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:34,459 INFO L495 AbstractCegarLoop]: Abstraction has 8983 states and 15422 transitions. [2023-11-19 07:46:34,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8983 states and 15422 transitions. [2023-11-19 07:46:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:34,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:34,478 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:34,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:34,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:34,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1338997728, now seen corresponding path program 1 times [2023-11-19 07:46:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20654114] [2023-11-19 07:46:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:34,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:34,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634883095] [2023-11-19 07:46:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:34,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:34,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:34,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:46:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:35,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:35,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-11-19 07:46:36,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20654114] [2023-11-19 07:46:36,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634883095] [2023-11-19 07:46:36,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634883095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611313211] [2023-11-19 07:46:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:36,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:36,563 INFO L87 Difference]: Start difference. First operand 8983 states and 15422 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:37,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:37,849 INFO L93 Difference]: Finished difference Result 27007 states and 46388 transitions. [2023-11-19 07:46:37,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:37,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 756 [2023-11-19 07:46:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:37,912 INFO L225 Difference]: With dead ends: 27007 [2023-11-19 07:46:37,912 INFO L226 Difference]: Without dead ends: 18027 [2023-11-19 07:46:37,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:37,935 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 252 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:37,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1537 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:46:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2023-11-19 07:46:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 17961. [2023-11-19 07:46:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17961 states, 14704 states have (on average 1.659956474428727) internal successors, (24408), 14760 states have internal predecessors, (24408), 3184 states have call successors, (3184), 72 states have call predecessors, (3184), 72 states have return successors, (3184), 3128 states have call predecessors, (3184), 3184 states have call successors, (3184) [2023-11-19 07:46:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17961 states to 17961 states and 30776 transitions. [2023-11-19 07:46:39,276 INFO L78 Accepts]: Start accepts. Automaton has 17961 states and 30776 transitions. Word has length 756 [2023-11-19 07:46:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:39,278 INFO L495 AbstractCegarLoop]: Abstraction has 17961 states and 30776 transitions. [2023-11-19 07:46:39,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-11-19 07:46:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 17961 states and 30776 transitions. [2023-11-19 07:46:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-19 07:46:39,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:39,315 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:39,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:46:39,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:39,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1298322978, now seen corresponding path program 1 times [2023-11-19 07:46:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393384658] [2023-11-19 07:46:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246386475] [2023-11-19 07:46:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:39,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:39,709 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:39,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca0ad9-f6b6-422a-8542-73d5cd923c1a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:46:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:46:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13168 proven. 129 refuted. 0 times theorem prover too weak. 14787 trivial. 0 not checked. [2023-11-19 07:46:41,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 225 proven. 129 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-11-19 07:46:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393384658] [2023-11-19 07:46:41,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:41,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246386475] [2023-11-19 07:46:41,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246386475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:41,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:46:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-19 07:46:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480761399] [2023-11-19 07:46:41,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:41,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:46:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:41,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:46:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:46:41,974 INFO L87 Difference]: Start difference. First operand 17961 states and 30776 transitions. Second operand has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-11-19 07:46:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:54,803 INFO L93 Difference]: Finished difference Result 88045 states and 149012 transitions. [2023-11-19 07:46:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-19 07:46:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) Word has length 756 [2023-11-19 07:46:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:55,058 INFO L225 Difference]: With dead ends: 88045 [2023-11-19 07:46:55,058 INFO L226 Difference]: Without dead ends: 70087 [2023-11-19 07:46:55,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1503 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1047, Invalid=3645, Unknown=0, NotChecked=0, Total=4692 [2023-11-19 07:46:55,105 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 4123 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 2678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 6562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2678 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:55,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4202 Valid, 5080 Invalid, 6562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2678 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-19 07:46:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70087 states.