./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl --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 10a5b91e206caf05061e8827c7f121f08b981a096162c865ff7d0b016f9308fd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:30:41,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:30:41,673 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:30:41,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:30:41,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:30:41,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:30:41,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:30:41,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:30:41,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:30:41,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:30:41,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:30:41,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:30:41,710 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:30:41,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:30:41,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:30:41,712 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:30:41,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:30:41,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:30:41,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:30:41,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:30:41,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:30:41,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:30:41,720 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:30:41,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:30:41,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:30:41,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:30:41,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:30:41,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:30:41,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:41,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:30:41,723 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:30:41,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:30:41,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:30:41,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:30:41,725 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:30:41,725 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:30:41,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:30:41,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:30:41,726 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:30:41,727 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_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10a5b91e206caf05061e8827c7f121f08b981a096162c865ff7d0b016f9308fd [2023-11-12 02:30:42,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:30:42,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:30:42,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:30:42,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:30:42,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:30:42,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i [2023-11-12 02:30:45,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:30:45,725 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:30:45,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i [2023-11-12 02:30:45,745 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/data/df9764b40/c34cc436a7484398a73cd56246c526a8/FLAGcc76a09b6 [2023-11-12 02:30:45,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/data/df9764b40/c34cc436a7484398a73cd56246c526a8 [2023-11-12 02:30:45,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:30:45,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:30:45,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:45,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:30:45,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:30:45,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:45" (1/1) ... [2023-11-12 02:30:45,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba388ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:45, skipping insertion in model container [2023-11-12 02:30:45,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:45" (1/1) ... [2023-11-12 02:30:45,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:30:46,013 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_826bdb81-9d57-4f7a-a041-b3a7a413e36f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i[916,929] [2023-11-12 02:30:46,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:46,284 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:30:46,301 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_826bdb81-9d57-4f7a-a041-b3a7a413e36f/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-69.i[916,929] [2023-11-12 02:30:46,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:46,428 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:30:46,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46 WrapperNode [2023-11-12 02:30:46,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:46,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:46,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:30:46,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:30:46,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,567 INFO L138 Inliner]: procedures = 26, calls = 137, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 834 [2023-11-12 02:30:46,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:46,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:30:46,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:30:46,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:30:46,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:30:46,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:30:46,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:30:46,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:30:46,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (1/1) ... [2023-11-12 02:30:46,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:46,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:30:46,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:30:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:30:46,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:30:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:30:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:30:46,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:30:46,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:30:46,974 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:30:46,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:30:48,303 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:30:48,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:30:48,315 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:30:48,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:30:48 BoogieIcfgContainer [2023-11-12 02:30:48,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:30:48,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:30:48,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:30:48,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:30:48,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:30:45" (1/3) ... [2023-11-12 02:30:48,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f08e84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:30:48, skipping insertion in model container [2023-11-12 02:30:48,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:46" (2/3) ... [2023-11-12 02:30:48,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f08e84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:30:48, skipping insertion in model container [2023-11-12 02:30:48,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:30:48" (3/3) ... [2023-11-12 02:30:48,330 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-69.i [2023-11-12 02:30:48,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:30:48,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:30:48,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:30:48,453 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;@296d4adc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:30:48,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:30:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 213 states have (on average 1.596244131455399) internal successors, (340), 214 states have internal predecessors, (340), 124 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-12 02:30:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:48,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:48,608 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:48,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:30:48,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1623892366, now seen corresponding path program 1 times [2023-11-12 02:30:48,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781821259] [2023-11-12 02:30:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:49,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781821259] [2023-11-12 02:30:49,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:30:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335493991] [2023-11-12 02:30:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:49,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:30:49,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:30:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:50,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:30:50,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:30:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 30258 trivial. 0 not checked. [2023-11-12 02:30:50,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:30:50,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335493991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360317940] [2023-11-12 02:30:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:30:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:30:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:30:50,395 INFO L87 Difference]: Start difference. First operand has 340 states, 213 states have (on average 1.596244131455399) internal successors, (340), 214 states have internal predecessors, (340), 124 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 2 states have call successors, (124) [2023-11-12 02:30:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:30:50,560 INFO L93 Difference]: Finished difference Result 673 states and 1294 transitions. [2023-11-12 02:30:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:30:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 2 states have call successors, (124) Word has length 775 [2023-11-12 02:30:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:30:50,596 INFO L225 Difference]: With dead ends: 673 [2023-11-12 02:30:50,597 INFO L226 Difference]: Without dead ends: 336 [2023-11-12 02:30:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:30:50,616 INFO L413 NwaCegarLoop]: 579 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, 579 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 [2023-11-12 02:30:50,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:30:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-12 02:30:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2023-11-12 02:30:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 210 states have (on average 1.5761904761904761) internal successors, (331), 210 states have internal predecessors, (331), 124 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-12 02:30:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 579 transitions. [2023-11-12 02:30:50,845 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 579 transitions. Word has length 775 [2023-11-12 02:30:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:30:50,846 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 579 transitions. [2023-11-12 02:30:50,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (124), 2 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 2 states have call successors, (124) [2023-11-12 02:30:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 579 transitions. [2023-11-12 02:30:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:50,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:50,887 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:50,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:30:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:30:51,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:30:51,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash -157200850, now seen corresponding path program 1 times [2023-11-12 02:30:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:51,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470035845] [2023-11-12 02:30:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:51,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:30:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457378608] [2023-11-12 02:30:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:51,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:51,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:30:51,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:30:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:52,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:30:52,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:30:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:30:52,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:30:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470035845] [2023-11-12 02:30:52,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:30:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457378608] [2023-11-12 02:30:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457378608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482960467] [2023-11-12 02:30:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:52,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:52,328 INFO L87 Difference]: Start difference. First operand 336 states and 579 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:30:52,513 INFO L93 Difference]: Finished difference Result 1002 states and 1731 transitions. [2023-11-12 02:30:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 775 [2023-11-12 02:30:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:30:52,535 INFO L225 Difference]: With dead ends: 1002 [2023-11-12 02:30:52,535 INFO L226 Difference]: Without dead ends: 669 [2023-11-12 02:30:52,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:52,541 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 570 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:30:52,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1691 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:30:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-11-12 02:30:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 667. [2023-11-12 02:30:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 416 states have (on average 1.5769230769230769) internal successors, (656), 416 states have internal predecessors, (656), 248 states have call successors, (248), 2 states have call predecessors, (248), 2 states have return successors, (248), 248 states have call predecessors, (248), 248 states have call successors, (248) [2023-11-12 02:30:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1152 transitions. [2023-11-12 02:30:52,823 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1152 transitions. Word has length 775 [2023-11-12 02:30:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:30:52,829 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1152 transitions. [2023-11-12 02:30:52,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1152 transitions. [2023-11-12 02:30:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:52,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:52,865 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:52,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:30:53,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:53,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:30:53,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash -130135248, now seen corresponding path program 1 times [2023-11-12 02:30:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197615028] [2023-11-12 02:30:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:53,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:30:53,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449148095] [2023-11-12 02:30:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:53,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:53,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:30:53,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:30:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:54,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:30:54,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:30:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:30:55,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:30:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197615028] [2023-11-12 02:30:55,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:30:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449148095] [2023-11-12 02:30:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449148095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984753363] [2023-11-12 02:30:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:55,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:55,440 INFO L87 Difference]: Start difference. First operand 667 states and 1152 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:30:55,541 INFO L93 Difference]: Finished difference Result 1660 states and 2869 transitions. [2023-11-12 02:30:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 775 [2023-11-12 02:30:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:30:55,553 INFO L225 Difference]: With dead ends: 1660 [2023-11-12 02:30:55,553 INFO L226 Difference]: Without dead ends: 996 [2023-11-12 02:30:55,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:55,557 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 233 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:30:55,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1352 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:30:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2023-11-12 02:30:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 994. [2023-11-12 02:30:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 618 states have (on average 1.5711974110032363) internal successors, (971), 618 states have internal predecessors, (971), 372 states have call successors, (372), 3 states have call predecessors, (372), 3 states have return successors, (372), 372 states have call predecessors, (372), 372 states have call successors, (372) [2023-11-12 02:30:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1715 transitions. [2023-11-12 02:30:55,712 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1715 transitions. Word has length 775 [2023-11-12 02:30:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:30:55,715 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1715 transitions. [2023-11-12 02:30:55,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1715 transitions. [2023-11-12 02:30:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:55,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:55,728 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:55,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:30:55,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:55,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:30:55,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash -987771090, now seen corresponding path program 1 times [2023-11-12 02:30:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393572711] [2023-11-12 02:30:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:56,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:30:56,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761028795] [2023-11-12 02:30:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:56,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:56,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:30:56,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:30:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:56,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:30:56,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:30:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:30:57,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:30:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393572711] [2023-11-12 02:30:57,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:30:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761028795] [2023-11-12 02:30:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761028795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:57,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:57,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:30:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733514130] [2023-11-12 02:30:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:30:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:30:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:30:57,013 INFO L87 Difference]: Start difference. First operand 994 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:30:57,446 INFO L93 Difference]: Finished difference Result 2547 states and 4428 transitions. [2023-11-12 02:30:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:30:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 775 [2023-11-12 02:30:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:30:57,468 INFO L225 Difference]: With dead ends: 2547 [2023-11-12 02:30:57,469 INFO L226 Difference]: Without dead ends: 1556 [2023-11-12 02:30:57,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:30:57,481 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 337 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:30:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1606 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:30:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-11-12 02:30:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1551. [2023-11-12 02:30:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1073 states have (on average 1.6467847157502329) internal successors, (1767), 1076 states have internal predecessors, (1767), 471 states have call successors, (471), 6 states have call predecessors, (471), 6 states have return successors, (471), 468 states have call predecessors, (471), 471 states have call successors, (471) [2023-11-12 02:30:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2709 transitions. [2023-11-12 02:30:57,864 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2709 transitions. Word has length 775 [2023-11-12 02:30:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:30:57,866 INFO L495 AbstractCegarLoop]: Abstraction has 1551 states and 2709 transitions. [2023-11-12 02:30:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2709 transitions. [2023-11-12 02:30:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:57,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:57,881 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:57,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:30:58,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:58,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:30:58,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2045609168, now seen corresponding path program 1 times [2023-11-12 02:30:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560193231] [2023-11-12 02:30:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:58,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:30:58,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608213881] [2023-11-12 02:30:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:58,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:30:58,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:58,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:30:58,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:30:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:58,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:30:59,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:30:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:30:59,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:30:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560193231] [2023-11-12 02:30:59,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:30:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608213881] [2023-11-12 02:30:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608213881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:59,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814997029] [2023-11-12 02:30:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:59,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:59,137 INFO L87 Difference]: Start difference. First operand 1551 states and 2709 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:30:59,315 INFO L93 Difference]: Finished difference Result 3101 states and 5424 transitions. [2023-11-12 02:30:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 775 [2023-11-12 02:30:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:30:59,339 INFO L225 Difference]: With dead ends: 3101 [2023-11-12 02:30:59,340 INFO L226 Difference]: Without dead ends: 2063 [2023-11-12 02:30:59,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:59,346 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 563 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:30:59,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1141 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:30:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-11-12 02:30:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2023-11-12 02:30:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1424 states have (on average 1.6446629213483146) internal successors, (2342), 1428 states have internal predecessors, (2342), 628 states have call successors, (628), 8 states have call predecessors, (628), 8 states have return successors, (628), 624 states have call predecessors, (628), 628 states have call successors, (628) [2023-11-12 02:30:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3598 transitions. [2023-11-12 02:30:59,886 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3598 transitions. Word has length 775 [2023-11-12 02:30:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:30:59,888 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3598 transitions. [2023-11-12 02:30:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:30:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3598 transitions. [2023-11-12 02:30:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-12 02:30:59,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:30:59,901 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:59,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:00,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:00,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -136287083, now seen corresponding path program 1 times [2023-11-12 02:31:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241177624] [2023-11-12 02:31:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:00,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:00,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771296307] [2023-11-12 02:31:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:00,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:00,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:00,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:31:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:00,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:31:00,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:00,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:00,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241177624] [2023-11-12 02:31:00,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771296307] [2023-11-12 02:31:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771296307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:00,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:00,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964906090] [2023-11-12 02:31:00,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:00,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:00,986 INFO L87 Difference]: Start difference. First operand 2061 states and 3598 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:01,298 INFO L93 Difference]: Finished difference Result 5529 states and 9700 transitions. [2023-11-12 02:31:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 775 [2023-11-12 02:31:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:01,337 INFO L225 Difference]: With dead ends: 5529 [2023-11-12 02:31:01,338 INFO L226 Difference]: Without dead ends: 3471 [2023-11-12 02:31:01,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:01,350 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 310 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:01,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1244 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:31:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2023-11-12 02:31:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3455. [2023-11-12 02:31:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 2578 states have (on average 1.670287044220326) internal successors, (4306), 2590 states have internal predecessors, (4306), 860 states have call successors, (860), 16 states have call predecessors, (860), 16 states have return successors, (860), 848 states have call predecessors, (860), 860 states have call successors, (860) [2023-11-12 02:31:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 6026 transitions. [2023-11-12 02:31:02,023 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 6026 transitions. Word has length 775 [2023-11-12 02:31:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:02,025 INFO L495 AbstractCegarLoop]: Abstraction has 3455 states and 6026 transitions. [2023-11-12 02:31:02,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 6026 transitions. [2023-11-12 02:31:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-12 02:31:02,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:02,041 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:02,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:02,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:02,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:02,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -207928061, now seen corresponding path program 1 times [2023-11-12 02:31:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546019721] [2023-11-12 02:31:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:02,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024412910] [2023-11-12 02:31:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:02,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:02,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:02,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:02,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:31:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:03,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:31:03,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:03,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:03,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546019721] [2023-11-12 02:31:03,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024412910] [2023-11-12 02:31:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024412910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:03,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291517553] [2023-11-12 02:31:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:03,265 INFO L87 Difference]: Start difference. First operand 3455 states and 6026 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:03,498 INFO L93 Difference]: Finished difference Result 6949 states and 12082 transitions. [2023-11-12 02:31:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 776 [2023-11-12 02:31:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:03,528 INFO L225 Difference]: With dead ends: 6949 [2023-11-12 02:31:03,528 INFO L226 Difference]: Without dead ends: 3497 [2023-11-12 02:31:03,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:03,542 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 308 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:03,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1313 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2023-11-12 02:31:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 2767. [2023-11-12 02:31:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2122 states have (on average 1.6786050895381714) internal successors, (3562), 2126 states have internal predecessors, (3562), 628 states have call successors, (628), 16 states have call predecessors, (628), 16 states have return successors, (628), 624 states have call predecessors, (628), 628 states have call successors, (628) [2023-11-12 02:31:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4818 transitions. [2023-11-12 02:31:04,015 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4818 transitions. Word has length 776 [2023-11-12 02:31:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:04,016 INFO L495 AbstractCegarLoop]: Abstraction has 2767 states and 4818 transitions. [2023-11-12 02:31:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4818 transitions. [2023-11-12 02:31:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-11-12 02:31:04,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:04,030 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:04,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:04,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:04,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:04,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash 294246543, now seen corresponding path program 1 times [2023-11-12 02:31:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422171476] [2023-11-12 02:31:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:04,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:04,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143312511] [2023-11-12 02:31:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:04,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:04,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:31:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:05,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:31:05,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:05,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422171476] [2023-11-12 02:31:05,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143312511] [2023-11-12 02:31:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143312511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473934620] [2023-11-12 02:31:05,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:05,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:05,147 INFO L87 Difference]: Start difference. First operand 2767 states and 4818 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:05,495 INFO L93 Difference]: Finished difference Result 7679 states and 13416 transitions. [2023-11-12 02:31:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:05,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 778 [2023-11-12 02:31:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:05,544 INFO L225 Difference]: With dead ends: 7679 [2023-11-12 02:31:05,544 INFO L226 Difference]: Without dead ends: 4915 [2023-11-12 02:31:05,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:05,557 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 332 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:05,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1130 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2023-11-12 02:31:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4909. [2023-11-12 02:31:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4909 states, 3976 states have (on average 1.7072434607645874) internal successors, (6788), 3988 states have internal predecessors, (6788), 900 states have call successors, (900), 32 states have call predecessors, (900), 32 states have return successors, (900), 888 states have call predecessors, (900), 900 states have call successors, (900) [2023-11-12 02:31:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 8588 transitions. [2023-11-12 02:31:06,192 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 8588 transitions. Word has length 778 [2023-11-12 02:31:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:06,194 INFO L495 AbstractCegarLoop]: Abstraction has 4909 states and 8588 transitions. [2023-11-12 02:31:06,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 8588 transitions. [2023-11-12 02:31:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-11-12 02:31:06,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:06,216 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:06,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:06,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:31:06,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1783090355, now seen corresponding path program 1 times [2023-11-12 02:31:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461461004] [2023-11-12 02:31:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:06,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:06,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795481456] [2023-11-12 02:31:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:06,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:06,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:31:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:07,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:31:07,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:07,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:07,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461461004] [2023-11-12 02:31:07,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795481456] [2023-11-12 02:31:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795481456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670828873] [2023-11-12 02:31:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:07,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:07,506 INFO L87 Difference]: Start difference. First operand 4909 states and 8588 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:08,075 INFO L93 Difference]: Finished difference Result 14625 states and 25566 transitions. [2023-11-12 02:31:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 778 [2023-11-12 02:31:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:08,152 INFO L225 Difference]: With dead ends: 14625 [2023-11-12 02:31:08,153 INFO L226 Difference]: Without dead ends: 9719 [2023-11-12 02:31:08,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:08,174 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 548 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:08,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1652 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2023-11-12 02:31:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 9717. [2023-11-12 02:31:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9717 states, 7852 states have (on average 1.6877228731533367) internal successors, (13252), 7876 states have internal predecessors, (13252), 1800 states have call successors, (1800), 64 states have call predecessors, (1800), 64 states have return successors, (1800), 1776 states have call predecessors, (1800), 1800 states have call successors, (1800) [2023-11-12 02:31:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9717 states to 9717 states and 16852 transitions. [2023-11-12 02:31:09,681 INFO L78 Accepts]: Start accepts. Automaton has 9717 states and 16852 transitions. Word has length 778 [2023-11-12 02:31:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 9717 states and 16852 transitions. [2023-11-12 02:31:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9717 states and 16852 transitions. [2023-11-12 02:31:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-12 02:31:09,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:09,708 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:09,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:09,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:31:09,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:09,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1897401679, now seen corresponding path program 1 times [2023-11-12 02:31:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870127769] [2023-11-12 02:31:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:10,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782440080] [2023-11-12 02:31:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:10,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:10,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:31:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:10,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:31:10,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:10,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:10,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:10,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870127769] [2023-11-12 02:31:10,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782440080] [2023-11-12 02:31:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782440080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:10,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130581645] [2023-11-12 02:31:10,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:10,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:10,918 INFO L87 Difference]: Start difference. First operand 9717 states and 16852 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:12,026 INFO L93 Difference]: Finished difference Result 25705 states and 44446 transitions. [2023-11-12 02:31:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:12,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 779 [2023-11-12 02:31:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:12,109 INFO L225 Difference]: With dead ends: 25705 [2023-11-12 02:31:12,109 INFO L226 Difference]: Without dead ends: 15991 [2023-11-12 02:31:12,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:12,150 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 371 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1371 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15991 states. [2023-11-12 02:31:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15991 to 15981. [2023-11-12 02:31:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15981 states, 12524 states have (on average 1.6611306291919514) internal successors, (20804), 12580 states have internal predecessors, (20804), 3328 states have call successors, (3328), 128 states have call predecessors, (3328), 128 states have return successors, (3328), 3272 states have call predecessors, (3328), 3328 states have call successors, (3328) [2023-11-12 02:31:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15981 states to 15981 states and 27460 transitions. [2023-11-12 02:31:14,572 INFO L78 Accepts]: Start accepts. Automaton has 15981 states and 27460 transitions. Word has length 779 [2023-11-12 02:31:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:14,574 INFO L495 AbstractCegarLoop]: Abstraction has 15981 states and 27460 transitions. [2023-11-12 02:31:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15981 states and 27460 transitions. [2023-11-12 02:31:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2023-11-12 02:31:14,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:14,611 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:14,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:14,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:14,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:14,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 131184431, now seen corresponding path program 1 times [2023-11-12 02:31:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:14,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156266277] [2023-11-12 02:31:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:14,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051323275] [2023-11-12 02:31:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:14,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:14,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:14,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:14,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:31:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:15,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:31:15,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 15285 proven. 198 refuted. 0 times theorem prover too weak. 15021 trivial. 0 not checked. [2023-11-12 02:31:16,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:31:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 171 proven. 198 refuted. 0 times theorem prover too weak. 30135 trivial. 0 not checked. [2023-11-12 02:31:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156266277] [2023-11-12 02:31:17,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051323275] [2023-11-12 02:31:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051323275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:31:17,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:31:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-12 02:31:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705233465] [2023-11-12 02:31:17,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:31:17,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:31:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:31:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:31:17,191 INFO L87 Difference]: Start difference. First operand 15981 states and 27460 transitions. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 3 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 3 states have call predecessors, (191), 3 states have call successors, (191) [2023-11-12 02:31:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:19,891 INFO L93 Difference]: Finished difference Result 32313 states and 55254 transitions. [2023-11-12 02:31:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:31:19,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 3 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 3 states have call predecessors, (191), 3 states have call successors, (191) Word has length 779 [2023-11-12 02:31:19,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:19,953 INFO L225 Difference]: With dead ends: 32313 [2023-11-12 02:31:19,953 INFO L226 Difference]: Without dead ends: 16335 [2023-11-12 02:31:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1563 GetRequests, 1546 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:31:19,989 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1709 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 1650 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:31:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16335 states. [2023-11-12 02:31:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16335 to 16045. [2023-11-12 02:31:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16045 states, 12572 states have (on average 1.6535157492841235) internal successors, (20788), 12628 states have internal predecessors, (20788), 3328 states have call successors, (3328), 144 states have call predecessors, (3328), 144 states have return successors, (3328), 3272 states have call predecessors, (3328), 3328 states have call successors, (3328) [2023-11-12 02:31:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16045 states to 16045 states and 27444 transitions. [2023-11-12 02:31:21,920 INFO L78 Accepts]: Start accepts. Automaton has 16045 states and 27444 transitions. Word has length 779 [2023-11-12 02:31:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:21,922 INFO L495 AbstractCegarLoop]: Abstraction has 16045 states and 27444 transitions. [2023-11-12 02:31:21,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 3 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 3 states have call predecessors, (191), 3 states have call successors, (191) [2023-11-12 02:31:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 16045 states and 27444 transitions. [2023-11-12 02:31:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-12 02:31:21,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:21,959 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:21,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:22,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:22,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:22,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:22,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2131838822, now seen corresponding path program 1 times [2023-11-12 02:31:22,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:22,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636396606] [2023-11-12 02:31:22,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:22,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:22,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471922631] [2023-11-12 02:31:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:22,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:22,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:22,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:31:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:22,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:31:22,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:31:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30504 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2023-11-12 02:31:23,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:31:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:23,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636396606] [2023-11-12 02:31:23,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:31:23,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471922631] [2023-11-12 02:31:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471922631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:23,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:23,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:31:23,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112830640] [2023-11-12 02:31:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:23,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:31:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:31:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:31:23,065 INFO L87 Difference]: Start difference. First operand 16045 states and 27444 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:24,197 INFO L93 Difference]: Finished difference Result 32343 states and 55333 transitions. [2023-11-12 02:31:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:31:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) Word has length 782 [2023-11-12 02:31:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:24,257 INFO L225 Difference]: With dead ends: 32343 [2023-11-12 02:31:24,257 INFO L226 Difference]: Without dead ends: 16301 [2023-11-12 02:31:24,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:31:24,290 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 2 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:24,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1716 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2023-11-12 02:31:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 16173. [2023-11-12 02:31:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16173 states, 12700 states have (on average 1.6519685039370078) internal successors, (20980), 12756 states have internal predecessors, (20980), 3328 states have call successors, (3328), 144 states have call predecessors, (3328), 144 states have return successors, (3328), 3272 states have call predecessors, (3328), 3328 states have call successors, (3328) [2023-11-12 02:31:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16173 states to 16173 states and 27636 transitions. [2023-11-12 02:31:26,019 INFO L78 Accepts]: Start accepts. Automaton has 16173 states and 27636 transitions. Word has length 782 [2023-11-12 02:31:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:26,021 INFO L495 AbstractCegarLoop]: Abstraction has 16173 states and 27636 transitions. [2023-11-12 02:31:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 1 states have call predecessors, (124), 1 states have call successors, (124) [2023-11-12 02:31:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 16173 states and 27636 transitions. [2023-11-12 02:31:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-12 02:31:26,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:26,049 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:26,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:31:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:26,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:26,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1399871396, now seen corresponding path program 1 times [2023-11-12 02:31:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307950635] [2023-11-12 02:31:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:26,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:31:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539410438] [2023-11-12 02:31:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:31:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:26,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:31:26,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdb81-9d57-4f7a-a041-b3a7a413e36f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process