./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87d97b8e30b2a31a4876e057488e2e87126da257ca4324c4e70a282f34f137aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:05:36,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:05:36,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:05:36,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:05:36,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:05:36,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:05:36,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:05:36,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:05:36,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:05:36,719 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:05:36,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:05:36,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:05:36,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:05:36,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:05:36,722 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:05:36,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:05:36,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:05:36,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:05:36,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:05:36,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:05:36,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:05:36,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:05:36,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:05:36,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:05:36,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:05:36,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:05:36,726 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:05:36,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:05:36,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:05:36,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:05:36,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:05:36,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:05:36,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:05:36,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:05:36,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:05:36,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:05:36,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:05:36,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:05:36,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:05:36,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:05:36,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:05:36,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:05:36,731 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87d97b8e30b2a31a4876e057488e2e87126da257ca4324c4e70a282f34f137aa [2023-11-29 02:05:36,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:05:37,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:05:37,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:05:37,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:05:37,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:05:37,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i [2023-11-29 02:05:39,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:05:39,938 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:05:39,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i [2023-11-29 02:05:39,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/c323f661b/f4b2528225e54db8b3e2b685f434141e/FLAGf0c964b8e [2023-11-29 02:05:39,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/c323f661b/f4b2528225e54db8b3e2b685f434141e [2023-11-29 02:05:39,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:05:39,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:05:39,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:05:39,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:05:39,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:05:39,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:05:39" (1/1) ... [2023-11-29 02:05:39,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7461fb38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:39, skipping insertion in model container [2023-11-29 02:05:39,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:05:39" (1/1) ... [2023-11-29 02:05:40,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:05:40,119 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i[917,930] [2023-11-29 02:05:40,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:05:40,189 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:05:40,199 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i[917,930] [2023-11-29 02:05:40,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:05:40,247 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:05:40,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40 WrapperNode [2023-11-29 02:05:40,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:05:40,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:05:40,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:05:40,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:05:40,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,303 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 194 [2023-11-29 02:05:40,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:05:40,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:05:40,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:05:40,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:05:40,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,340 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:05:40,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:05:40,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:05:40,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:05:40,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:05:40,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (1/1) ... [2023-11-29 02:05:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:05:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:40,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:05:40,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:05:40,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:05:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:05:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:05:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:05:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:05:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:05:40,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:05:40,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:05:40,862 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:05:40,921 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:05:40,921 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:05:40,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:05:40 BoogieIcfgContainer [2023-11-29 02:05:40,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:05:40,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:05:40,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:05:40,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:05:40,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:05:39" (1/3) ... [2023-11-29 02:05:40,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:05:40, skipping insertion in model container [2023-11-29 02:05:40,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:05:40" (2/3) ... [2023-11-29 02:05:40,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8e5931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:05:40, skipping insertion in model container [2023-11-29 02:05:40,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:05:40" (3/3) ... [2023-11-29 02:05:40,930 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-81.i [2023-11-29 02:05:40,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:05:40,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:05:40,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:05:41,004 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;@7605c5ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:05:41,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:05:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 02:05:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 02:05:41,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:41,027 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:05:41,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:41,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash 10805237, now seen corresponding path program 1 times [2023-11-29 02:05:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:41,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292828482] [2023-11-29 02:05:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:41,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:41,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292828482] [2023-11-29 02:05:41,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:05:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461216414] [2023-11-29 02:05:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:41,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:41,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:05:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:41,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:05:41,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-11-29 02:05:41,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:05:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461216414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:05:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289026700] [2023-11-29 02:05:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:41,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:05:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:05:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:05:41,503 INFO L87 Difference]: Start difference. First operand has 78 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 02:05:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:41,547 INFO L93 Difference]: Finished difference Result 153 states and 280 transitions. [2023-11-29 02:05:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:05:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 192 [2023-11-29 02:05:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:41,557 INFO L225 Difference]: With dead ends: 153 [2023-11-29 02:05:41,558 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 02:05:41,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:05:41,565 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:41,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:05:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 02:05:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-29 02:05:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 02:05:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 120 transitions. [2023-11-29 02:05:41,614 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 120 transitions. Word has length 192 [2023-11-29 02:05:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:41,615 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 120 transitions. [2023-11-29 02:05:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 02:05:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 120 transitions. [2023-11-29 02:05:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 02:05:41,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:41,620 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:05:41,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:05:41,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:05:41,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -122740747, now seen corresponding path program 1 times [2023-11-29 02:05:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381327170] [2023-11-29 02:05:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:41,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:05:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35824438] [2023-11-29 02:05:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:41,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:41,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:41,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:05:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:42,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:05:42,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:05:42,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:05:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-29 02:05:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:43,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381327170] [2023-11-29 02:05:43,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:05:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35824438] [2023-11-29 02:05:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35824438] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:05:43,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:05:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-11-29 02:05:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291972561] [2023-11-29 02:05:43,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:05:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:05:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:05:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:05:43,207 INFO L87 Difference]: Start difference. First operand 76 states and 120 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 02:05:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:44,452 INFO L93 Difference]: Finished difference Result 248 states and 378 transitions. [2023-11-29 02:05:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:05:44,453 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 192 [2023-11-29 02:05:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:44,458 INFO L225 Difference]: With dead ends: 248 [2023-11-29 02:05:44,458 INFO L226 Difference]: Without dead ends: 173 [2023-11-29 02:05:44,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 02:05:44,462 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 285 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:44,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 469 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:05:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-29 02:05:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 85. [2023-11-29 02:05:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 02:05:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2023-11-29 02:05:44,497 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 192 [2023-11-29 02:05:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:44,498 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2023-11-29 02:05:44,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 14 states have internal predecessors, (69), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 02:05:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2023-11-29 02:05:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:05:44,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:44,502 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:05:44,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:05:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:44,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:44,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1139234809, now seen corresponding path program 1 times [2023-11-29 02:05:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:44,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847511496] [2023-11-29 02:05:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:44,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:05:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514134929] [2023-11-29 02:05:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:44,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:44,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:44,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:05:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:44,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:05:44,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:05:44,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:05:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:44,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847511496] [2023-11-29 02:05:44,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:05:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514134929] [2023-11-29 02:05:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514134929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:05:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550815579] [2023-11-29 02:05:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:44,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:05:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:05:44,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:05:44,906 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:05:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:44,970 INFO L93 Difference]: Finished difference Result 216 states and 317 transitions. [2023-11-29 02:05:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:05:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:05:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:44,975 INFO L225 Difference]: With dead ends: 216 [2023-11-29 02:05:44,975 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 02:05:44,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:05:44,978 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 48 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:44,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 247 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:05:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 02:05:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2023-11-29 02:05:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.2875) internal successors, (103), 81 states have internal predecessors, (103), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-29 02:05:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2023-11-29 02:05:45,005 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 193 [2023-11-29 02:05:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:45,005 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2023-11-29 02:05:45,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:05:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2023-11-29 02:05:45,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:05:45,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:45,010 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:05:45,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:05:45,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:45,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:45,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1081976507, now seen corresponding path program 1 times [2023-11-29 02:05:45,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:45,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252078466] [2023-11-29 02:05:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:45,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:45,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:05:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750292669] [2023-11-29 02:05:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:45,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:45,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:45,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:05:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:45,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:05:45,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:05:53,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:05:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:05:58,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252078466] [2023-11-29 02:05:58,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:05:58,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750292669] [2023-11-29 02:05:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750292669] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:05:58,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:05:58,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:05:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335096212] [2023-11-29 02:05:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:58,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:05:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:05:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:05:58,844 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:00,008 INFO L93 Difference]: Finished difference Result 417 states and 599 transitions. [2023-11-29 02:06:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:06:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:06:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:00,013 INFO L225 Difference]: With dead ends: 417 [2023-11-29 02:06:00,013 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 02:06:00,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:06:00,015 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 215 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:00,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 642 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:06:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 02:06:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 202. [2023-11-29 02:06:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 142 states have internal predecessors, (188), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:06:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 296 transitions. [2023-11-29 02:06:00,063 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 296 transitions. Word has length 193 [2023-11-29 02:06:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:00,064 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 296 transitions. [2023-11-29 02:06:00,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 296 transitions. [2023-11-29 02:06:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:06:00,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:00,068 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:00,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 02:06:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:00,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:00,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash -401918137, now seen corresponding path program 1 times [2023-11-29 02:06:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947591171] [2023-11-29 02:06:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:00,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:06:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35891944] [2023-11-29 02:06:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:00,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:00,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:06:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:00,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 02:06:00,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 02:06:06,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:06:13,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:13,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947591171] [2023-11-29 02:06:13,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:06:13,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35891944] [2023-11-29 02:06:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35891944] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:13,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [41] total 49 [2023-11-29 02:06:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48223845] [2023-11-29 02:06:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:13,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:06:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:06:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=1874, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 02:06:13,856 INFO L87 Difference]: Start difference. First operand 202 states and 296 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:19,551 INFO L93 Difference]: Finished difference Result 607 states and 858 transitions. [2023-11-29 02:06:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:06:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:06:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:19,556 INFO L225 Difference]: With dead ends: 607 [2023-11-29 02:06:19,556 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 02:06:19,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=661, Invalid=3371, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:06:19,560 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 252 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:19,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 787 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 02:06:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 02:06:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 211. [2023-11-29 02:06:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 148 states have (on average 1.3716216216216217) internal successors, (203), 151 states have internal predecessors, (203), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:06:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2023-11-29 02:06:19,608 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 193 [2023-11-29 02:06:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:19,608 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2023-11-29 02:06:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2023-11-29 02:06:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:06:19,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:19,611 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:19,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:06:19,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:19,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:19,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash 78236324, now seen corresponding path program 1 times [2023-11-29 02:06:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373398308] [2023-11-29 02:06:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:19,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:19,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:06:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735198200] [2023-11-29 02:06:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:19,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:19,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:19,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:06:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:19,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:06:19,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1023 proven. 45 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-29 02:06:20,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-29 02:06:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:20,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373398308] [2023-11-29 02:06:20,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:06:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735198200] [2023-11-29 02:06:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735198200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:06:20,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:06:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:06:20,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405700015] [2023-11-29 02:06:20,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:06:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:06:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:06:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:06:20,196 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-29 02:06:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:20,450 INFO L93 Difference]: Finished difference Result 434 states and 638 transitions. [2023-11-29 02:06:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:06:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 193 [2023-11-29 02:06:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:20,453 INFO L225 Difference]: With dead ends: 434 [2023-11-29 02:06:20,453 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 02:06:20,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:06:20,455 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 91 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:20,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 226 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:06:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 02:06:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 217. [2023-11-29 02:06:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 156 states have internal predecessors, (208), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:06:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 316 transitions. [2023-11-29 02:06:20,492 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 316 transitions. Word has length 193 [2023-11-29 02:06:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:20,493 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 316 transitions. [2023-11-29 02:06:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-29 02:06:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 316 transitions. [2023-11-29 02:06:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:06:20,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:20,494 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:20,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:06:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:06:20,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:20,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1853243686, now seen corresponding path program 1 times [2023-11-29 02:06:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410100380] [2023-11-29 02:06:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:20,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:06:20,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592287127] [2023-11-29 02:06:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:20,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:20,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:20,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:20,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:06:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:20,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:06:20,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:06:25,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:06:28,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410100380] [2023-11-29 02:06:28,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:06:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592287127] [2023-11-29 02:06:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592287127] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:28,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:28,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:06:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042440063] [2023-11-29 02:06:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:28,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:06:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:06:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:06:28,984 INFO L87 Difference]: Start difference. First operand 217 states and 316 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:29,850 INFO L93 Difference]: Finished difference Result 543 states and 776 transitions. [2023-11-29 02:06:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:06:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:06:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:29,854 INFO L225 Difference]: With dead ends: 543 [2023-11-29 02:06:29,854 INFO L226 Difference]: Without dead ends: 327 [2023-11-29 02:06:29,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:06:29,856 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 225 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 583 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:06:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-29 02:06:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 216. [2023-11-29 02:06:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 152 states have (on average 1.355263157894737) internal successors, (206), 155 states have internal predecessors, (206), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:06:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 314 transitions. [2023-11-29 02:06:29,893 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 314 transitions. Word has length 193 [2023-11-29 02:06:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:29,893 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 314 transitions. [2023-11-29 02:06:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 314 transitions. [2023-11-29 02:06:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:06:29,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:29,896 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:29,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:06:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:06:30,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:30,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash -823811069, now seen corresponding path program 1 times [2023-11-29 02:06:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788716026] [2023-11-29 02:06:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:30,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:06:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794699386] [2023-11-29 02:06:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:30,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:30,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:30,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:30,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:06:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:30,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 02:06:30,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1195 proven. 183 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-11-29 02:06:35,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:06:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788716026] [2023-11-29 02:06:41,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:06:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794699386] [2023-11-29 02:06:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794699386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:41,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:06:41,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 28 [2023-11-29 02:06:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617884283] [2023-11-29 02:06:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:06:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:06:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:06:41,113 INFO L87 Difference]: Start difference. First operand 216 states and 314 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:44,637 INFO L93 Difference]: Finished difference Result 592 states and 831 transitions. [2023-11-29 02:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:06:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:06:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:44,640 INFO L225 Difference]: With dead ends: 592 [2023-11-29 02:06:44,640 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 02:06:44,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=350, Invalid=1456, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 02:06:44,642 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 305 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:44,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 731 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:06:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 02:06:44,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 219. [2023-11-29 02:06:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 155 states have (on average 1.3612903225806452) internal successors, (211), 158 states have internal predecessors, (211), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:06:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 319 transitions. [2023-11-29 02:06:44,676 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 319 transitions. Word has length 193 [2023-11-29 02:06:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:44,677 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 319 transitions. [2023-11-29 02:06:44,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:06:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 319 transitions. [2023-11-29 02:06:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:06:44,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:44,678 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:06:44,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:06:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:06:44,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:44,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1431350754, now seen corresponding path program 1 times [2023-11-29 02:06:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:44,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605088224] [2023-11-29 02:06:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:44,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:06:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596395218] [2023-11-29 02:06:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:44,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:44,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:06:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:45,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 02:06:45,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 02:06:56,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:07:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:07:03,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:03,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605088224] [2023-11-29 02:07:03,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:03,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596395218] [2023-11-29 02:07:03,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596395218] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:03,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:03,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [39] total 45 [2023-11-29 02:07:03,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193741035] [2023-11-29 02:07:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:03,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:07:03,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:07:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 02:07:03,124 INFO L87 Difference]: Start difference. First operand 219 states and 319 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:05,372 INFO L93 Difference]: Finished difference Result 559 states and 798 transitions. [2023-11-29 02:07:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:07:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:07:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:05,375 INFO L225 Difference]: With dead ends: 559 [2023-11-29 02:07:05,375 INFO L226 Difference]: Without dead ends: 341 [2023-11-29 02:07:05,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=474, Invalid=2076, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 02:07:05,376 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 217 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:05,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 570 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:07:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-29 02:07:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 218. [2023-11-29 02:07:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 157 states have internal predecessors, (209), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:07:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 317 transitions. [2023-11-29 02:07:05,429 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 317 transitions. Word has length 193 [2023-11-29 02:07:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:05,429 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 317 transitions. [2023-11-29 02:07:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 317 transitions. [2023-11-29 02:07:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:07:05,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:05,431 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:05,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:07:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:05,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:05,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -143752699, now seen corresponding path program 1 times [2023-11-29 02:07:05,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686945596] [2023-11-29 02:07:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:05,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:05,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542738320] [2023-11-29 02:07:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:05,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:05,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:05,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:05,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:07:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:05,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 02:07:05,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 02:07:11,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:07:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:07:18,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686945596] [2023-11-29 02:07:18,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542738320] [2023-11-29 02:07:18,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542738320] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:18,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [40] total 47 [2023-11-29 02:07:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394298635] [2023-11-29 02:07:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:18,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:18,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 02:07:18,904 INFO L87 Difference]: Start difference. First operand 218 states and 317 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:23,738 INFO L93 Difference]: Finished difference Result 600 states and 841 transitions. [2023-11-29 02:07:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 02:07:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:07:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:23,742 INFO L225 Difference]: With dead ends: 600 [2023-11-29 02:07:23,742 INFO L226 Difference]: Without dead ends: 383 [2023-11-29 02:07:23,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=602, Invalid=3058, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 02:07:23,745 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 246 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:23,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 688 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:07:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-29 02:07:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 219. [2023-11-29 02:07:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 155 states have (on average 1.3612903225806452) internal successors, (211), 158 states have internal predecessors, (211), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:07:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 319 transitions. [2023-11-29 02:07:23,811 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 319 transitions. Word has length 193 [2023-11-29 02:07:23,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:23,811 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 319 transitions. [2023-11-29 02:07:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 319 transitions. [2023-11-29 02:07:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:07:23,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:23,813 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:23,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:07:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:07:24,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:24,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2111409124, now seen corresponding path program 1 times [2023-11-29 02:07:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434858676] [2023-11-29 02:07:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:24,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:24,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442141260] [2023-11-29 02:07:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:24,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:24,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:24,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:24,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:07:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:24,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 02:07:24,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:07:28,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:07:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:07:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434858676] [2023-11-29 02:07:31,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442141260] [2023-11-29 02:07:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442141260] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:31,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:07:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361879036] [2023-11-29 02:07:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:07:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:07:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:07:31,854 INFO L87 Difference]: Start difference. First operand 219 states and 319 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:32,772 INFO L93 Difference]: Finished difference Result 545 states and 778 transitions. [2023-11-29 02:07:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:07:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:07:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:32,774 INFO L225 Difference]: With dead ends: 545 [2023-11-29 02:07:32,775 INFO L226 Difference]: Without dead ends: 327 [2023-11-29 02:07:32,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:07:32,776 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 179 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:32,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 593 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:07:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-29 02:07:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 215. [2023-11-29 02:07:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 151 states have (on average 1.3576158940397351) internal successors, (205), 154 states have internal predecessors, (205), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:07:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 313 transitions. [2023-11-29 02:07:32,820 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 313 transitions. Word has length 193 [2023-11-29 02:07:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:32,821 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 313 transitions. [2023-11-29 02:07:32,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 313 transitions. [2023-11-29 02:07:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:07:32,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:32,822 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:32,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:07:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:33,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:33,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1933127111, now seen corresponding path program 1 times [2023-11-29 02:07:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838642339] [2023-11-29 02:07:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:33,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831911742] [2023-11-29 02:07:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:33,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:33,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:33,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:33,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:07:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:33,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:07:33,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:07:40,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:40,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838642339] [2023-11-29 02:07:40,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:40,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831911742] [2023-11-29 02:07:40,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831911742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:40,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:40,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:07:40,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843018022] [2023-11-29 02:07:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:40,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:07:40,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:07:40,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:07:40,097 INFO L87 Difference]: Start difference. First operand 215 states and 313 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:41,089 INFO L93 Difference]: Finished difference Result 524 states and 750 transitions. [2023-11-29 02:07:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:07:41,090 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:07:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:41,093 INFO L225 Difference]: With dead ends: 524 [2023-11-29 02:07:41,093 INFO L226 Difference]: Without dead ends: 310 [2023-11-29 02:07:41,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:07:41,095 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 182 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:41,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 580 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:07:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-29 02:07:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 229. [2023-11-29 02:07:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 168 states have internal predecessors, (223), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:07:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 331 transitions. [2023-11-29 02:07:41,160 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 331 transitions. Word has length 193 [2023-11-29 02:07:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:41,160 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 331 transitions. [2023-11-29 02:07:41,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 331 transitions. [2023-11-29 02:07:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:07:41,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:41,162 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:41,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:07:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:41,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:41,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1681781815, now seen corresponding path program 1 times [2023-11-29 02:07:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175341919] [2023-11-29 02:07:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:41,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926959313] [2023-11-29 02:07:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:41,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:41,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:07:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:41,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:07:41,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1239 proven. 114 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-11-29 02:07:44,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:07:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:07:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175341919] [2023-11-29 02:07:48,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926959313] [2023-11-29 02:07:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926959313] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:07:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2023-11-29 02:07:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345226035] [2023-11-29 02:07:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:07:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:07:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:07:48,985 INFO L87 Difference]: Start difference. First operand 229 states and 331 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:54,667 INFO L93 Difference]: Finished difference Result 608 states and 850 transitions. [2023-11-29 02:07:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 02:07:54,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:07:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:54,670 INFO L225 Difference]: With dead ends: 608 [2023-11-29 02:07:54,670 INFO L226 Difference]: Without dead ends: 380 [2023-11-29 02:07:54,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=409, Invalid=1847, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 02:07:54,673 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 215 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:54,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 674 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:07:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-29 02:07:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 230. [2023-11-29 02:07:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 166 states have (on average 1.355421686746988) internal successors, (225), 169 states have internal predecessors, (225), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:07:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 333 transitions. [2023-11-29 02:07:54,722 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 333 transitions. Word has length 193 [2023-11-29 02:07:54,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:54,723 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 333 transitions. [2023-11-29 02:07:54,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:07:54,723 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 333 transitions. [2023-11-29 02:07:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:07:54,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:54,724 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:54,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:07:54,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:07:54,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:54,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash 573380008, now seen corresponding path program 1 times [2023-11-29 02:07:54,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:54,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140708593] [2023-11-29 02:07:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:54,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:54,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545878538] [2023-11-29 02:07:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:54,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:54,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:54,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:54,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:07:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:55,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-29 02:07:55,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1309 proven. 375 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-29 02:08:07,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:08:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140708593] [2023-11-29 02:08:15,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:08:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545878538] [2023-11-29 02:08:15,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545878538] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:15,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:15,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [40] total 48 [2023-11-29 02:08:15,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815629552] [2023-11-29 02:08:15,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:15,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:15,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1785, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 02:08:15,508 INFO L87 Difference]: Start difference. First operand 230 states and 333 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:21,548 INFO L93 Difference]: Finished difference Result 654 states and 942 transitions. [2023-11-29 02:08:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:08:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:08:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:21,552 INFO L225 Difference]: With dead ends: 654 [2023-11-29 02:08:21,553 INFO L226 Difference]: Without dead ends: 425 [2023-11-29 02:08:21,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=647, Invalid=3513, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 02:08:21,556 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 333 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:21,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 484 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:08:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-29 02:08:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 229. [2023-11-29 02:08:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 168 states have internal predecessors, (223), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:08:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 331 transitions. [2023-11-29 02:08:21,609 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 331 transitions. Word has length 193 [2023-11-29 02:08:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:21,609 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 331 transitions. [2023-11-29 02:08:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 331 transitions. [2023-11-29 02:08:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:08:21,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:21,611 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:21,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 02:08:21,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:08:21,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:21,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2103674747, now seen corresponding path program 1 times [2023-11-29 02:08:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:21,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624595374] [2023-11-29 02:08:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:21,839 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:08:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040556950] [2023-11-29 02:08:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:21,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:21,841 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:08:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:22,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:08:22,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:08:27,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:08:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624595374] [2023-11-29 02:08:27,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:08:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040556950] [2023-11-29 02:08:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040556950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:08:27,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:08:27,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:08:27,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731825857] [2023-11-29 02:08:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:27,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:08:27,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:27,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:08:27,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:08:27,122 INFO L87 Difference]: Start difference. First operand 229 states and 331 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:28,069 INFO L93 Difference]: Finished difference Result 538 states and 766 transitions. [2023-11-29 02:08:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:08:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:08:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:28,072 INFO L225 Difference]: With dead ends: 538 [2023-11-29 02:08:28,072 INFO L226 Difference]: Without dead ends: 310 [2023-11-29 02:08:28,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:08:28,073 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 161 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 603 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:08:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-29 02:08:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 231. [2023-11-29 02:08:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 170 states have internal predecessors, (226), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:08:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2023-11-29 02:08:28,115 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 193 [2023-11-29 02:08:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:28,115 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2023-11-29 02:08:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2023-11-29 02:08:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:08:28,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:28,116 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:28,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:08:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:08:28,317 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1423616377, now seen corresponding path program 1 times [2023-11-29 02:08:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:28,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228581424] [2023-11-29 02:08:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:28,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:08:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713000851] [2023-11-29 02:08:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:28,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:28,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:08:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:28,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 02:08:28,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1209 proven. 216 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2023-11-29 02:08:41,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:08:49,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:49,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228581424] [2023-11-29 02:08:49,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:08:49,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713000851] [2023-11-29 02:08:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713000851] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:49,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:08:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [32] total 42 [2023-11-29 02:08:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780358511] [2023-11-29 02:08:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:08:49,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:08:49,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:08:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1386, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 02:08:49,696 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:57,707 INFO L93 Difference]: Finished difference Result 662 states and 935 transitions. [2023-11-29 02:08:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:08:57,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:08:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:57,711 INFO L225 Difference]: With dead ends: 662 [2023-11-29 02:08:57,711 INFO L226 Difference]: Without dead ends: 432 [2023-11-29 02:08:57,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=672, Invalid=3750, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 02:08:57,713 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 319 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:57,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 647 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:08:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-29 02:08:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 232. [2023-11-29 02:08:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 168 states have (on average 1.3571428571428572) internal successors, (228), 171 states have internal predecessors, (228), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:08:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 336 transitions. [2023-11-29 02:08:57,759 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 336 transitions. Word has length 193 [2023-11-29 02:08:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:57,760 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 336 transitions. [2023-11-29 02:08:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:08:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 336 transitions. [2023-11-29 02:08:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 02:08:57,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:57,762 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:57,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:08:57,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:08:57,963 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:57,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash 831545446, now seen corresponding path program 1 times [2023-11-29 02:08:57,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:57,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556554321] [2023-11-29 02:08:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:57,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:57,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:08:57,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105971077] [2023-11-29 02:08:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:57,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:57,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:57,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:57,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:08:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:58,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:08:58,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:09:01,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556554321] [2023-11-29 02:09:01,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:09:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105971077] [2023-11-29 02:09:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105971077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:09:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202049597] [2023-11-29 02:09:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:09:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:09:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:09:01,581 INFO L87 Difference]: Start difference. First operand 232 states and 336 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:09:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:02,413 INFO L93 Difference]: Finished difference Result 541 states and 768 transitions. [2023-11-29 02:09:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:09:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 02:09:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:02,415 INFO L225 Difference]: With dead ends: 541 [2023-11-29 02:09:02,415 INFO L226 Difference]: Without dead ends: 310 [2023-11-29 02:09:02,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:09:02,417 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 136 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:02,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 518 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:09:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-29 02:09:02,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 228. [2023-11-29 02:09:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 164 states have (on average 1.353658536585366) internal successors, (222), 167 states have internal predecessors, (222), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 02:09:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 330 transitions. [2023-11-29 02:09:02,460 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 330 transitions. Word has length 193 [2023-11-29 02:09:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:02,460 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 330 transitions. [2023-11-29 02:09:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:09:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 330 transitions. [2023-11-29 02:09:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:09:02,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:02,462 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:02,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:09:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:09:02,662 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:02,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1272398964, now seen corresponding path program 1 times [2023-11-29 02:09:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597613885] [2023-11-29 02:09:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:02,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:09:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642578127] [2023-11-29 02:09:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:02,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:02,678 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:02,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:09:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:02,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:09:02,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:09:02,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:09:02,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:02,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597613885] [2023-11-29 02:09:02,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:09:02,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642578127] [2023-11-29 02:09:02,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642578127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:02,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:02,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:09:02,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145512128] [2023-11-29 02:09:02,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:02,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:09:02,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:09:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:09:02,805 INFO L87 Difference]: Start difference. First operand 228 states and 330 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:09:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:02,930 INFO L93 Difference]: Finished difference Result 466 states and 672 transitions. [2023-11-29 02:09:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:09:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:09:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:02,932 INFO L225 Difference]: With dead ends: 466 [2023-11-29 02:09:02,932 INFO L226 Difference]: Without dead ends: 239 [2023-11-29 02:09:02,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:09:02,933 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 72 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:02,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 305 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:09:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-29 02:09:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 177. [2023-11-29 02:09:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 132 states have (on average 1.356060606060606) internal successors, (179), 133 states have internal predecessors, (179), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 02:09:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 255 transitions. [2023-11-29 02:09:02,961 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 255 transitions. Word has length 194 [2023-11-29 02:09:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:02,962 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 255 transitions. [2023-11-29 02:09:02,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:09:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 255 transitions. [2023-11-29 02:09:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:09:02,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:02,963 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:09:02,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:09:03,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:09:03,164 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:03,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1916205240, now seen corresponding path program 1 times [2023-11-29 02:09:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193098289] [2023-11-29 02:09:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:03,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:09:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714546517] [2023-11-29 02:09:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:03,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:09:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:09:03,180 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:09:03,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:09:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:03,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 02:09:03,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:09:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 717 proven. 72 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2023-11-29 02:09:08,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:11:40,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193098289] [2023-11-29 02:11:40,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:11:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714546517] [2023-11-29 02:11:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714546517] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:40,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:40,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2023-11-29 02:11:40,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903087338] [2023-11-29 02:11:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:40,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:11:40,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:11:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:11:40,323 INFO L87 Difference]: Start difference. First operand 177 states and 255 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:11:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:41,660 INFO L93 Difference]: Finished difference Result 465 states and 659 transitions. [2023-11-29 02:11:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:11:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:11:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:41,662 INFO L225 Difference]: With dead ends: 465 [2023-11-29 02:11:41,662 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 02:11:41,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:11:41,664 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 203 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:41,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 706 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:11:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 02:11:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 183. [2023-11-29 02:11:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 138 states have (on average 1.355072463768116) internal successors, (187), 139 states have internal predecessors, (187), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 02:11:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 263 transitions. [2023-11-29 02:11:41,698 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 263 transitions. Word has length 194 [2023-11-29 02:11:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:41,698 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 263 transitions. [2023-11-29 02:11:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:11:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 263 transitions. [2023-11-29 02:11:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:11:41,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:41,700 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:41,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:11:41,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:41,901 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:41,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -66341931, now seen corresponding path program 1 times [2023-11-29 02:11:41,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:41,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6807176] [2023-11-29 02:11:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:41,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:11:41,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800496358] [2023-11-29 02:11:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:41,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:41,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:41,916 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:41,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:11:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:11:42,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 02:11:42,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-29 02:11:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6807176] [2023-11-29 02:11:42,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:11:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800496358] [2023-11-29 02:11:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800496358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:42,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:11:42,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 02:11:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484365116] [2023-11-29 02:11:42,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:11:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:11:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:11:42,821 INFO L87 Difference]: Start difference. First operand 183 states and 263 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2023-11-29 02:11:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:43,524 INFO L93 Difference]: Finished difference Result 592 states and 852 transitions. [2023-11-29 02:11:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:11:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 194 [2023-11-29 02:11:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:43,527 INFO L225 Difference]: With dead ends: 592 [2023-11-29 02:11:43,527 INFO L226 Difference]: Without dead ends: 410 [2023-11-29 02:11:43,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:11:43,528 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 90 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 351 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:11:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-29 02:11:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 315. [2023-11-29 02:11:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 226 states have (on average 1.336283185840708) internal successors, (302), 228 states have internal predecessors, (302), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:11:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 454 transitions. [2023-11-29 02:11:43,589 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 454 transitions. Word has length 194 [2023-11-29 02:11:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:43,590 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 454 transitions. [2023-11-29 02:11:43,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2023-11-29 02:11:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 454 transitions. [2023-11-29 02:11:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:11:43,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:43,591 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:43,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:11:43,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:43,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:43,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1698703686, now seen corresponding path program 1 times [2023-11-29 02:11:43,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:43,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472754589] [2023-11-29 02:11:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:43,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:11:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012060585] [2023-11-29 02:11:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:43,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:43,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:43,807 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:43,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:11:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:43,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:11:43,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:11:48,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:11:58,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:58,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472754589] [2023-11-29 02:11:58,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:11:58,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012060585] [2023-11-29 02:11:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012060585] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:58,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:58,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2023-11-29 02:11:58,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143304054] [2023-11-29 02:11:58,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:58,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:11:58,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:58,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:11:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:11:58,566 INFO L87 Difference]: Start difference. First operand 315 states and 454 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:12:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:00,006 INFO L93 Difference]: Finished difference Result 827 states and 1175 transitions. [2023-11-29 02:12:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:12:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:12:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:00,010 INFO L225 Difference]: With dead ends: 827 [2023-11-29 02:12:00,010 INFO L226 Difference]: Without dead ends: 513 [2023-11-29 02:12:00,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:12:00,011 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 253 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:00,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 665 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:12:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-29 02:12:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 323. [2023-11-29 02:12:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 234 states have (on average 1.329059829059829) internal successors, (311), 236 states have internal predecessors, (311), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:12:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 463 transitions. [2023-11-29 02:12:00,074 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 463 transitions. Word has length 194 [2023-11-29 02:12:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:00,074 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 463 transitions. [2023-11-29 02:12:00,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:12:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 463 transitions. [2023-11-29 02:12:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:12:00,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:00,076 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:00,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:12:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:00,277 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:00,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash 613716439, now seen corresponding path program 1 times [2023-11-29 02:12:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228437862] [2023-11-29 02:12:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:00,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399024227] [2023-11-29 02:12:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:00,293 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:00,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:12:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:00,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 02:12:00,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:12:04,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:12:51,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:51,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228437862] [2023-11-29 02:12:51,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:12:51,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399024227] [2023-11-29 02:12:51,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399024227] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:51,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:51,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 02:12:51,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796012085] [2023-11-29 02:12:51,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:12:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:12:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:12:51,696 INFO L87 Difference]: Start difference. First operand 323 states and 463 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:12:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:52,748 INFO L93 Difference]: Finished difference Result 819 states and 1161 transitions. [2023-11-29 02:12:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:12:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:12:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:52,752 INFO L225 Difference]: With dead ends: 819 [2023-11-29 02:12:52,752 INFO L226 Difference]: Without dead ends: 497 [2023-11-29 02:12:52,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:12:52,753 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 234 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:52,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 798 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:12:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-29 02:12:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 328. [2023-11-29 02:12:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 239 states have (on average 1.3430962343096233) internal successors, (321), 241 states have internal predecessors, (321), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:12:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 473 transitions. [2023-11-29 02:12:52,842 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 473 transitions. Word has length 194 [2023-11-29 02:12:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:52,842 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 473 transitions. [2023-11-29 02:12:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:12:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 473 transitions. [2023-11-29 02:12:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:12:52,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:52,843 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:52,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:12:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:53,044 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:53,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1440538248, now seen corresponding path program 1 times [2023-11-29 02:12:53,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755548145] [2023-11-29 02:12:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:53,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725276923] [2023-11-29 02:12:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:53,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:53,062 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:53,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:12:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:53,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:12:53,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 717 proven. 72 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2023-11-29 02:12:57,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:14:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:14:48,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:14:48,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755548145] [2023-11-29 02:14:48,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:14:48,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725276923] [2023-11-29 02:14:48,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725276923] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:14:48,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:14:48,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2023-11-29 02:14:48,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853461372] [2023-11-29 02:14:48,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:14:48,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:14:48,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:14:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:14:48,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:14:48,813 INFO L87 Difference]: Start difference. First operand 328 states and 473 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:14:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:14:50,402 INFO L93 Difference]: Finished difference Result 843 states and 1199 transitions. [2023-11-29 02:14:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:14:50,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:14:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:14:50,406 INFO L225 Difference]: With dead ends: 843 [2023-11-29 02:14:50,406 INFO L226 Difference]: Without dead ends: 516 [2023-11-29 02:14:50,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:14:50,408 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 253 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:14:50,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 700 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:14:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-29 02:14:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 333. [2023-11-29 02:14:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 244 states have (on average 1.3442622950819672) internal successors, (328), 246 states have internal predecessors, (328), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:14:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 480 transitions. [2023-11-29 02:14:50,479 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 480 transitions. Word has length 194 [2023-11-29 02:14:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:14:50,479 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 480 transitions. [2023-11-29 02:14:50,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:14:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 480 transitions. [2023-11-29 02:14:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:14:50,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:14:50,480 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:14:50,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 02:14:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:14:50,681 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:14:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:14:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 871881877, now seen corresponding path program 1 times [2023-11-29 02:14:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:14:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637039099] [2023-11-29 02:14:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:14:50,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:14:50,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062038524] [2023-11-29 02:14:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:14:50,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:14:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:14:50,696 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:14:50,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:14:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:14:50,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:14:50,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:14:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 717 proven. 72 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2023-11-29 02:14:54,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:15:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637039099] [2023-11-29 02:15:37,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062038524] [2023-11-29 02:15:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062038524] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:15:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-11-29 02:15:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24099415] [2023-11-29 02:15:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:15:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:15:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:15:37,306 INFO L87 Difference]: Start difference. First operand 333 states and 480 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:15:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:38,427 INFO L93 Difference]: Finished difference Result 832 states and 1183 transitions. [2023-11-29 02:15:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:15:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:15:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:38,430 INFO L225 Difference]: With dead ends: 832 [2023-11-29 02:15:38,430 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 02:15:38,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:15:38,432 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 213 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:38,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 687 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:15:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 02:15:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 329. [2023-11-29 02:15:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 240 states have (on average 1.3458333333333334) internal successors, (323), 242 states have internal predecessors, (323), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:15:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 475 transitions. [2023-11-29 02:15:38,497 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 475 transitions. Word has length 194 [2023-11-29 02:15:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 475 transitions. [2023-11-29 02:15:38,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:15:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 475 transitions. [2023-11-29 02:15:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:15:38,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:38,499 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:38,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 02:15:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:38,700 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:38,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1859204978, now seen corresponding path program 1 times [2023-11-29 02:15:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:38,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780133809] [2023-11-29 02:15:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:38,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:38,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012192185] [2023-11-29 02:15:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:38,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:38,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:38,716 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:38,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 02:15:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:38,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:15:38,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:15:45,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:15:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780133809] [2023-11-29 02:15:53,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:15:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012192185] [2023-11-29 02:15:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012192185] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:53,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:15:53,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:15:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417940865] [2023-11-29 02:15:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:53,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:15:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:15:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:15:53,072 INFO L87 Difference]: Start difference. First operand 329 states and 475 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:15:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:55,095 INFO L93 Difference]: Finished difference Result 745 states and 1061 transitions. [2023-11-29 02:15:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:15:55,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:15:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:55,098 INFO L225 Difference]: With dead ends: 745 [2023-11-29 02:15:55,098 INFO L226 Difference]: Without dead ends: 558 [2023-11-29 02:15:55,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:15:55,103 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 343 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:55,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 512 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:15:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-29 02:15:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 333. [2023-11-29 02:15:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 244 states have (on average 1.3524590163934427) internal successors, (330), 246 states have internal predecessors, (330), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:15:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 482 transitions. [2023-11-29 02:15:55,171 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 482 transitions. Word has length 194 [2023-11-29 02:15:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:55,172 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 482 transitions. [2023-11-29 02:15:55,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:15:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 482 transitions. [2023-11-29 02:15:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:15:55,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:55,173 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:55,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 02:15:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:55,374 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:55,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:55,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1755703948, now seen corresponding path program 1 times [2023-11-29 02:15:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:55,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127574383] [2023-11-29 02:15:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:55,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:55,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:15:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563870780] [2023-11-29 02:15:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:55,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:55,389 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:55,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 02:15:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:55,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 02:15:55,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1356 proven. 315 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-29 02:16:02,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:16:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127574383] [2023-11-29 02:16:09,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563870780] [2023-11-29 02:16:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563870780] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:09,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:09,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [38] total 46 [2023-11-29 02:16:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990310307] [2023-11-29 02:16:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:16:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:16:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1653, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 02:16:09,955 INFO L87 Difference]: Start difference. First operand 333 states and 482 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:20,207 INFO L93 Difference]: Finished difference Result 851 states and 1180 transitions. [2023-11-29 02:16:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 02:16:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:16:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:20,210 INFO L225 Difference]: With dead ends: 851 [2023-11-29 02:16:20,210 INFO L226 Difference]: Without dead ends: 661 [2023-11-29 02:16:20,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=693, Invalid=3729, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 02:16:20,213 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 340 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:20,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 750 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 02:16:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-29 02:16:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 334. [2023-11-29 02:16:20,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 245 states have (on average 1.3551020408163266) internal successors, (332), 247 states have internal predecessors, (332), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:16:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 484 transitions. [2023-11-29 02:16:20,316 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 484 transitions. Word has length 194 [2023-11-29 02:16:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:20,316 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 484 transitions. [2023-11-29 02:16:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 484 transitions. [2023-11-29 02:16:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:16:20,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:20,318 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:20,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 02:16:20,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 02:16:20,518 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash 499457875, now seen corresponding path program 1 times [2023-11-29 02:16:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590716418] [2023-11-29 02:16:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:20,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:20,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863653492] [2023-11-29 02:16:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:20,534 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:20,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 02:16:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:20,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:16:20,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:16:25,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:16:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590716418] [2023-11-29 02:16:29,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863653492] [2023-11-29 02:16:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863653492] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:29,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:16:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414938886] [2023-11-29 02:16:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:16:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:16:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:16:29,699 INFO L87 Difference]: Start difference. First operand 334 states and 484 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:32,288 INFO L93 Difference]: Finished difference Result 728 states and 1038 transitions. [2023-11-29 02:16:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:16:32,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:16:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:32,291 INFO L225 Difference]: With dead ends: 728 [2023-11-29 02:16:32,291 INFO L226 Difference]: Without dead ends: 537 [2023-11-29 02:16:32,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:16:32,292 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 236 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:32,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 676 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:16:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-11-29 02:16:32,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 331. [2023-11-29 02:16:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 242 states have (on average 1.3512396694214877) internal successors, (327), 244 states have internal predecessors, (327), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:16:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 479 transitions. [2023-11-29 02:16:32,360 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 479 transitions. Word has length 194 [2023-11-29 02:16:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:32,360 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 479 transitions. [2023-11-29 02:16:32,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 479 transitions. [2023-11-29 02:16:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:16:32,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:32,361 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:32,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 02:16:32,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:16:32,562 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:32,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1111897672, now seen corresponding path program 1 times [2023-11-29 02:16:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:32,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818101156] [2023-11-29 02:16:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:32,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:32,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829803601] [2023-11-29 02:16:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,577 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 02:16:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:32,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 02:16:32,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:16:33,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818101156] [2023-11-29 02:16:33,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829803601] [2023-11-29 02:16:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829803601] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:33,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:33,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-11-29 02:16:33,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658350025] [2023-11-29 02:16:33,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:33,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:16:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:16:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:16:33,067 INFO L87 Difference]: Start difference. First operand 331 states and 479 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:33,494 INFO L93 Difference]: Finished difference Result 838 states and 1195 transitions. [2023-11-29 02:16:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:16:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:16:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:33,497 INFO L225 Difference]: With dead ends: 838 [2023-11-29 02:16:33,497 INFO L226 Difference]: Without dead ends: 508 [2023-11-29 02:16:33,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:16:33,498 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 239 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 328 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:16:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-29 02:16:33,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 327. [2023-11-29 02:16:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 238 states have (on average 1.3361344537815125) internal successors, (318), 240 states have internal predecessors, (318), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:16:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 470 transitions. [2023-11-29 02:16:33,570 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 470 transitions. Word has length 194 [2023-11-29 02:16:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:33,570 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 470 transitions. [2023-11-29 02:16:33,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 470 transitions. [2023-11-29 02:16:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:16:33,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:33,571 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:33,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 02:16:33,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:16:33,772 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2117370416, now seen corresponding path program 1 times [2023-11-29 02:16:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907701229] [2023-11-29 02:16:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:33,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579369974] [2023-11-29 02:16:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:33,792 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:33,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 02:16:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:33,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 02:16:33,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:16:40,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:16:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907701229] [2023-11-29 02:16:48,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:16:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579369974] [2023-11-29 02:16:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579369974] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:16:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2023-11-29 02:16:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271417526] [2023-11-29 02:16:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:16:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:16:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-11-29 02:16:48,684 INFO L87 Difference]: Start difference. First operand 327 states and 470 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:52,167 INFO L93 Difference]: Finished difference Result 675 states and 956 transitions. [2023-11-29 02:16:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:16:52,168 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:16:52,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:52,170 INFO L225 Difference]: With dead ends: 675 [2023-11-29 02:16:52,170 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 02:16:52,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 02:16:52,171 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 295 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:52,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 628 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:16:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 02:16:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 328. [2023-11-29 02:16:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 239 states have (on average 1.3389121338912133) internal successors, (320), 241 states have internal predecessors, (320), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:16:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 472 transitions. [2023-11-29 02:16:52,241 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 472 transitions. Word has length 194 [2023-11-29 02:16:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:52,241 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 472 transitions. [2023-11-29 02:16:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:16:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 472 transitions. [2023-11-29 02:16:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:16:52,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:52,242 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:52,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 02:16:52,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:16:52,443 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:52,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 77564943, now seen corresponding path program 1 times [2023-11-29 02:16:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:52,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462616431] [2023-11-29 02:16:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:52,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:52,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:16:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277274201] [2023-11-29 02:16:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:52,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:52,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:52,457 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:52,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 02:16:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:52,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 02:16:52,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 02:16:59,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:17:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:17:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462616431] [2023-11-29 02:17:06,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277274201] [2023-11-29 02:17:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277274201] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:06,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 02:17:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107855173] [2023-11-29 02:17:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:06,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:17:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:17:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:17:06,627 INFO L87 Difference]: Start difference. First operand 328 states and 472 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:08,278 INFO L93 Difference]: Finished difference Result 659 states and 938 transitions. [2023-11-29 02:17:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:17:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:17:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:08,282 INFO L225 Difference]: With dead ends: 659 [2023-11-29 02:17:08,282 INFO L226 Difference]: Without dead ends: 471 [2023-11-29 02:17:08,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:17:08,283 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 255 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:08,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 552 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:17:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-29 02:17:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 327. [2023-11-29 02:17:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 238 states have (on average 1.3361344537815125) internal successors, (318), 240 states have internal predecessors, (318), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:17:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 470 transitions. [2023-11-29 02:17:08,360 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 470 transitions. Word has length 194 [2023-11-29 02:17:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:08,361 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 470 transitions. [2023-11-29 02:17:08,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 470 transitions. [2023-11-29 02:17:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:17:08,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:08,362 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:08,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 02:17:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:08,563 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:08,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1497538510, now seen corresponding path program 1 times [2023-11-29 02:17:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:08,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422685806] [2023-11-29 02:17:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:08,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:08,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927481360] [2023-11-29 02:17:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:08,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:08,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:08,581 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:08,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 02:17:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:08,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 02:17:08,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 02:17:20,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:17:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:17:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422685806] [2023-11-29 02:17:27,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927481360] [2023-11-29 02:17:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927481360] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:27,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:27,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [41] total 49 [2023-11-29 02:17:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403272847] [2023-11-29 02:17:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:27,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:17:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:17:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=1875, Unknown=1, NotChecked=0, Total=2352 [2023-11-29 02:17:27,250 INFO L87 Difference]: Start difference. First operand 327 states and 470 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:36,607 INFO L93 Difference]: Finished difference Result 773 states and 1070 transitions. [2023-11-29 02:17:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 02:17:36,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:17:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:36,611 INFO L225 Difference]: With dead ends: 773 [2023-11-29 02:17:36,611 INFO L226 Difference]: Without dead ends: 586 [2023-11-29 02:17:36,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=723, Invalid=3832, Unknown=1, NotChecked=0, Total=4556 [2023-11-29 02:17:36,612 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 310 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:36,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 629 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 02:17:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-29 02:17:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 327. [2023-11-29 02:17:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 238 states have (on average 1.3361344537815125) internal successors, (318), 240 states have internal predecessors, (318), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:17:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 470 transitions. [2023-11-29 02:17:36,693 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 470 transitions. Word has length 194 [2023-11-29 02:17:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:36,693 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 470 transitions. [2023-11-29 02:17:36,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 470 transitions. [2023-11-29 02:17:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:17:36,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:36,695 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:36,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 02:17:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:36,896 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:36,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 757623313, now seen corresponding path program 1 times [2023-11-29 02:17:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405497903] [2023-11-29 02:17:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:36,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140189511] [2023-11-29 02:17:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:36,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:36,918 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 02:17:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:37,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 02:17:37,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 676 proven. 207 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2023-11-29 02:17:41,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:17:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:17:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405497903] [2023-11-29 02:17:46,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140189511] [2023-11-29 02:17:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140189511] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:17:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:17:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 23 [2023-11-29 02:17:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075242391] [2023-11-29 02:17:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:17:46,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:17:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:17:46,099 INFO L87 Difference]: Start difference. First operand 327 states and 470 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:47,833 INFO L93 Difference]: Finished difference Result 637 states and 906 transitions. [2023-11-29 02:17:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:17:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:17:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:47,836 INFO L225 Difference]: With dead ends: 637 [2023-11-29 02:17:47,836 INFO L226 Difference]: Without dead ends: 450 [2023-11-29 02:17:47,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:17:47,837 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 166 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 640 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:17:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-29 02:17:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 318. [2023-11-29 02:17:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 229 states have (on average 1.3275109170305677) internal successors, (304), 231 states have internal predecessors, (304), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:17:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 456 transitions. [2023-11-29 02:17:47,909 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 456 transitions. Word has length 194 [2023-11-29 02:17:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:47,909 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 456 transitions. [2023-11-29 02:17:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 456 transitions. [2023-11-29 02:17:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:17:47,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:47,911 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:47,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 02:17:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:48,111 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:48,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1575195256, now seen corresponding path program 1 times [2023-11-29 02:17:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834615401] [2023-11-29 02:17:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:48,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:48,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100018857] [2023-11-29 02:17:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:48,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:48,126 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:48,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 02:17:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:48,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:17:48,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:17:51,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:51,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834615401] [2023-11-29 02:17:51,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100018857] [2023-11-29 02:17:51,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100018857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:51,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:51,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:17:51,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786521081] [2023-11-29 02:17:51,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:17:51,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:17:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:51,367 INFO L87 Difference]: Start difference. First operand 318 states and 456 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:52,361 INFO L93 Difference]: Finished difference Result 722 states and 1028 transitions. [2023-11-29 02:17:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:17:52,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:17:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:52,365 INFO L225 Difference]: With dead ends: 722 [2023-11-29 02:17:52,365 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 02:17:52,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:17:52,366 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 171 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:52,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 623 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:17:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 02:17:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 318. [2023-11-29 02:17:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 229 states have (on average 1.3275109170305677) internal successors, (304), 231 states have internal predecessors, (304), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:17:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 456 transitions. [2023-11-29 02:17:52,450 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 456 transitions. Word has length 194 [2023-11-29 02:17:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:52,451 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 456 transitions. [2023-11-29 02:17:52,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 456 transitions. [2023-11-29 02:17:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:17:52,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:52,452 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:52,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 02:17:52,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 02:17:52,653 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:52,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1833360694, now seen corresponding path program 1 times [2023-11-29 02:17:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73702439] [2023-11-29 02:17:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:52,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025228437] [2023-11-29 02:17:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:52,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:52,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:52,668 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:52,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 02:17:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:52,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:17:52,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:17:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:17:56,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:17:56,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:56,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73702439] [2023-11-29 02:17:56,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:17:56,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025228437] [2023-11-29 02:17:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025228437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:17:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054217887] [2023-11-29 02:17:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:56,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:17:56,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:17:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:56,043 INFO L87 Difference]: Start difference. First operand 318 states and 456 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:56,835 INFO L93 Difference]: Finished difference Result 729 states and 1037 transitions. [2023-11-29 02:17:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:17:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:17:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:56,838 INFO L225 Difference]: With dead ends: 729 [2023-11-29 02:17:56,838 INFO L226 Difference]: Without dead ends: 412 [2023-11-29 02:17:56,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:17:56,839 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 208 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:56,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 564 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:17:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-29 02:17:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 304. [2023-11-29 02:17:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 215 states have (on average 1.3209302325581396) internal successors, (284), 217 states have internal predecessors, (284), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:17:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 436 transitions. [2023-11-29 02:17:56,912 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 436 transitions. Word has length 194 [2023-11-29 02:17:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:56,912 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 436 transitions. [2023-11-29 02:17:56,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:17:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 436 transitions. [2023-11-29 02:17:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:17:56,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:56,913 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:56,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 02:17:57,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 02:17:57,114 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:57,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash 838136624, now seen corresponding path program 1 times [2023-11-29 02:17:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:57,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479615584] [2023-11-29 02:17:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:57,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:17:57,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669784687] [2023-11-29 02:17:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:57,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:17:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:17:57,128 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:17:57,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 02:17:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:57,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-29 02:17:57,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1329 proven. 333 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-29 02:18:09,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:18:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:18:20,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479615584] [2023-11-29 02:18:20,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:18:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669784687] [2023-11-29 02:18:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669784687] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:20,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [40] total 50 [2023-11-29 02:18:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885828182] [2023-11-29 02:18:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:18:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:18:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1922, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 02:18:20,413 INFO L87 Difference]: Start difference. First operand 304 states and 436 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:26,249 INFO L93 Difference]: Finished difference Result 672 states and 927 transitions. [2023-11-29 02:18:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:18:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:18:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:26,252 INFO L225 Difference]: With dead ends: 672 [2023-11-29 02:18:26,252 INFO L226 Difference]: Without dead ends: 497 [2023-11-29 02:18:26,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=708, Invalid=3198, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 02:18:26,254 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 256 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:26,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 598 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:18:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-11-29 02:18:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 309. [2023-11-29 02:18:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 220 states have (on average 1.3318181818181818) internal successors, (293), 222 states have internal predecessors, (293), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:18:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 445 transitions. [2023-11-29 02:18:26,330 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 445 transitions. Word has length 194 [2023-11-29 02:18:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:26,330 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 445 transitions. [2023-11-29 02:18:26,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 445 transitions. [2023-11-29 02:18:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:18:26,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:26,332 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:26,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 02:18:26,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 02:18:26,533 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1201668849, now seen corresponding path program 1 times [2023-11-29 02:18:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:26,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406185092] [2023-11-29 02:18:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:26,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:18:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421447260] [2023-11-29 02:18:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:26,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:26,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:26,549 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:26,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 02:18:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:26,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:18:26,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:18:34,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:18:34,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:34,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406185092] [2023-11-29 02:18:34,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:18:34,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421447260] [2023-11-29 02:18:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421447260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:34,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:34,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:18:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757543436] [2023-11-29 02:18:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:34,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:18:34,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:18:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:34,627 INFO L87 Difference]: Start difference. First operand 309 states and 445 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:36,002 INFO L93 Difference]: Finished difference Result 670 states and 947 transitions. [2023-11-29 02:18:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 02:18:36,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:18:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:36,005 INFO L225 Difference]: With dead ends: 670 [2023-11-29 02:18:36,005 INFO L226 Difference]: Without dead ends: 491 [2023-11-29 02:18:36,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:18:36,006 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 256 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:36,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 467 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:18:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-29 02:18:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 308. [2023-11-29 02:18:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 219 states have (on average 1.3287671232876712) internal successors, (291), 221 states have internal predecessors, (291), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:18:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 443 transitions. [2023-11-29 02:18:36,080 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 443 transitions. Word has length 194 [2023-11-29 02:18:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:36,080 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 443 transitions. [2023-11-29 02:18:36,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 443 transitions. [2023-11-29 02:18:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:18:36,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:36,081 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:36,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 02:18:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 02:18:36,282 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:36,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1518194994, now seen corresponding path program 1 times [2023-11-29 02:18:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:36,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123791068] [2023-11-29 02:18:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:36,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:18:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445573687] [2023-11-29 02:18:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:36,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:36,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:36,297 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:36,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 02:18:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:36,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:18:36,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1239 proven. 114 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-11-29 02:18:39,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:18:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:18:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123791068] [2023-11-29 02:18:45,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:18:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445573687] [2023-11-29 02:18:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445573687] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:18:45,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2023-11-29 02:18:45,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352995326] [2023-11-29 02:18:45,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:45,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:18:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:18:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:18:45,110 INFO L87 Difference]: Start difference. First operand 308 states and 443 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:51,625 INFO L93 Difference]: Finished difference Result 684 states and 940 transitions. [2023-11-29 02:18:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 02:18:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:18:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:51,629 INFO L225 Difference]: With dead ends: 684 [2023-11-29 02:18:51,629 INFO L226 Difference]: Without dead ends: 506 [2023-11-29 02:18:51,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=442, Invalid=2008, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 02:18:51,630 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 282 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:51,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 637 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:18:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-29 02:18:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 309. [2023-11-29 02:18:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 220 states have (on average 1.3318181818181818) internal successors, (293), 222 states have internal predecessors, (293), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:18:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 445 transitions. [2023-11-29 02:18:51,725 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 445 transitions. Word has length 194 [2023-11-29 02:18:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:51,725 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 445 transitions. [2023-11-29 02:18:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:18:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 445 transitions. [2023-11-29 02:18:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:18:51,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:51,726 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:51,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 02:18:51,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 02:18:51,927 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:51,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -521610479, now seen corresponding path program 1 times [2023-11-29 02:18:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:51,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014096764] [2023-11-29 02:18:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:51,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:18:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035908409] [2023-11-29 02:18:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:51,941 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:51,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 02:18:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:52,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 02:18:52,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1186 proven. 240 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-11-29 02:19:03,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:19:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014096764] [2023-11-29 02:19:14,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:19:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035908409] [2023-11-29 02:19:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035908409] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:19:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:19:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [34] total 42 [2023-11-29 02:19:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477408746] [2023-11-29 02:19:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:14,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:19:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:19:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1371, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 02:19:14,099 INFO L87 Difference]: Start difference. First operand 309 states and 445 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:19:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:23,541 INFO L93 Difference]: Finished difference Result 741 states and 1040 transitions. [2023-11-29 02:19:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 02:19:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:19:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:23,545 INFO L225 Difference]: With dead ends: 741 [2023-11-29 02:19:23,545 INFO L226 Difference]: Without dead ends: 562 [2023-11-29 02:19:23,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=599, Invalid=3433, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:19:23,546 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 288 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:23,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 710 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 02:19:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-29 02:19:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 306. [2023-11-29 02:19:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 217 states have (on average 1.327188940092166) internal successors, (288), 219 states have internal predecessors, (288), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:19:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 440 transitions. [2023-11-29 02:19:23,621 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 440 transitions. Word has length 194 [2023-11-29 02:19:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:23,622 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 440 transitions. [2023-11-29 02:19:23,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:19:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 440 transitions. [2023-11-29 02:19:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:19:23,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:23,623 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:23,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 02:19:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 02:19:23,824 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:23,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2132966026, now seen corresponding path program 1 times [2023-11-29 02:19:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276592044] [2023-11-29 02:19:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:23,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:19:23,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458417762] [2023-11-29 02:19:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:23,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:23,839 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:19:23,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 02:19:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:23,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:19:23,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 02:19:27,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:19:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276592044] [2023-11-29 02:19:27,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:19:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458417762] [2023-11-29 02:19:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458417762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 02:19:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129711601] [2023-11-29 02:19:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:19:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:19:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:19:27,395 INFO L87 Difference]: Start difference. First operand 306 states and 440 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:19:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:28,524 INFO L93 Difference]: Finished difference Result 776 states and 1099 transitions. [2023-11-29 02:19:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:19:28,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 02:19:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:28,527 INFO L225 Difference]: With dead ends: 776 [2023-11-29 02:19:28,527 INFO L226 Difference]: Without dead ends: 471 [2023-11-29 02:19:28,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:19:28,528 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 200 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:28,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 635 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:19:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-29 02:19:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 328. [2023-11-29 02:19:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 239 states have (on average 1.3263598326359833) internal successors, (317), 241 states have internal predecessors, (317), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 02:19:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 469 transitions. [2023-11-29 02:19:28,603 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 469 transitions. Word has length 194 [2023-11-29 02:19:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:28,603 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 469 transitions. [2023-11-29 02:19:28,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 02:19:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 469 transitions. [2023-11-29 02:19:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 02:19:28,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:28,604 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:28,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 02:19:28,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:28,805 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:28,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1096302062, now seen corresponding path program 1 times [2023-11-29 02:19:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:28,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261896404] [2023-11-29 02:19:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:28,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:19:28,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129597330] [2023-11-29 02:19:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:28,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:28,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:28,824 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:19:28,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 02:19:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:19:28,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 02:19:36,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:40,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 02:19:40,225 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 02:19:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261896404] [2023-11-29 02:19:40,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:19:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129597330] [2023-11-29 02:19:40,227 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 02:19:40,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 02:19:40,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 02:19:40,428 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 76 more [2023-11-29 02:19:40,432 INFO L158 Benchmark]: Toolchain (without parser) took 840465.85ms. Allocated memory was 163.6MB in the beginning and 597.7MB in the end (delta: 434.1MB). Free memory was 127.4MB in the beginning and 207.1MB in the end (delta: -79.7MB). Peak memory consumption was 411.9MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,432 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:19:40,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.95ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 112.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.44ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 108.5MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,433 INFO L158 Benchmark]: Boogie Preprocessor took 65.76ms. Allocated memory is still 163.6MB. Free memory was 108.5MB in the beginning and 102.4MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,433 INFO L158 Benchmark]: RCFGBuilder took 551.06ms. Allocated memory is still 163.6MB. Free memory was 102.4MB in the beginning and 130.7MB in the end (delta: -28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,433 INFO L158 Benchmark]: TraceAbstraction took 839507.85ms. Allocated memory was 163.6MB in the beginning and 597.7MB in the end (delta: 434.1MB). Free memory was 130.7MB in the beginning and 207.1MB in the end (delta: -76.4MB). Peak memory consumption was 411.8MB. Max. memory is 16.1GB. [2023-11-29 02:19:40,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.95ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 112.9MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.44ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 108.5MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.76ms. Allocated memory is still 163.6MB. Free memory was 108.5MB in the beginning and 102.4MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 551.06ms. Allocated memory is still 163.6MB. Free memory was 102.4MB in the beginning and 130.7MB in the end (delta: -28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 839507.85ms. Allocated memory was 163.6MB in the beginning and 597.7MB in the end (delta: 434.1MB). Free memory was 130.7MB in the beginning and 207.1MB in the end (delta: -76.4MB). Peak memory consumption was 411.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87d97b8e30b2a31a4876e057488e2e87126da257ca4324c4e70a282f34f137aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:19:42,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:19:42,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 02:19:42,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:19:42,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:19:42,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:19:42,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:19:42,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:19:42,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:19:42,278 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:19:42,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:19:42,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:19:42,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:19:42,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:19:42,281 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:19:42,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:19:42,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:19:42,283 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:19:42,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:19:42,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:19:42,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:19:42,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:19:42,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:19:42,286 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:19:42,286 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:19:42,287 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:19:42,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:19:42,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:19:42,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:19:42,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:19:42,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:19:42,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:19:42,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:19:42,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:19:42,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:19:42,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:19:42,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:19:42,291 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:19:42,291 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:19:42,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:19:42,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:19:42,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:19:42,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:19:42,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:19:42,292 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:19:42,292 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87d97b8e30b2a31a4876e057488e2e87126da257ca4324c4e70a282f34f137aa [2023-11-29 02:19:42,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:19:42,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:19:42,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:19:42,604 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:19:42,604 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:19:42,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i [2023-11-29 02:19:45,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:19:45,651 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:19:45,652 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i [2023-11-29 02:19:45,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/9c74f41b4/45cf50ca05ed4bb88a74a6d9e4d343bf/FLAG25b9b35d6 [2023-11-29 02:19:45,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/data/9c74f41b4/45cf50ca05ed4bb88a74a6d9e4d343bf [2023-11-29 02:19:45,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:19:45,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:19:45,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:19:45,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:19:45,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:19:45,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:45" (1/1) ... [2023-11-29 02:19:45,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:45, skipping insertion in model container [2023-11-29 02:19:45,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:45" (1/1) ... [2023-11-29 02:19:45,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:19:45,889 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i[917,930] [2023-11-29 02:19:45,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:19:45,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:19:45,971 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_24b90ed8-4515-42a9-877f-4101bfcb0b97/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-81.i[917,930] [2023-11-29 02:19:46,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:19:46,020 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:19:46,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46 WrapperNode [2023-11-29 02:19:46,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:19:46,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:19:46,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:19:46,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:19:46,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,071 INFO L138 Inliner]: procedures = 27, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 161 [2023-11-29 02:19:46,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:19:46,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:19:46,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:19:46,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:19:46,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,101 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:19:46,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:19:46,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:19:46,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:19:46,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:19:46,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (1/1) ... [2023-11-29 02:19:46,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:19:46,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:46,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:19:46,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:19:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:19:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 02:19:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:19:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:19:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:19:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:19:46,288 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:19:46,291 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:19:46,628 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:19:46,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:19:46,694 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:19:46,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:46 BoogieIcfgContainer [2023-11-29 02:19:46,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:19:46,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:19:46,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:19:46,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:19:46,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:19:45" (1/3) ... [2023-11-29 02:19:46,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8624f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:46, skipping insertion in model container [2023-11-29 02:19:46,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:46" (2/3) ... [2023-11-29 02:19:46,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8624f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:46, skipping insertion in model container [2023-11-29 02:19:46,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:46" (3/3) ... [2023-11-29 02:19:46,705 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-81.i [2023-11-29 02:19:46,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:19:46,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:19:46,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:19:46,793 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;@735d8c01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:19:46,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:19:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 37 states have internal predecessors, (49), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 02:19:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:19:46,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:46,817 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:46,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:46,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -137566295, now seen corresponding path program 1 times [2023-11-29 02:19:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:19:46,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026703860] [2023-11-29 02:19:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:19:46,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:19:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 02:19:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:47,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:19:47,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 974 proven. 0 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2023-11-29 02:19:47,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:19:47,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:19:47,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026703860] [2023-11-29 02:19:47,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026703860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:47,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:47,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:19:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21307072] [2023-11-29 02:19:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:47,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:19:47,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:19:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:19:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:19:47,199 INFO L87 Difference]: Start difference. First operand has 71 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 37 states have internal predecessors, (49), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 02:19:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:47,268 INFO L93 Difference]: Finished difference Result 139 states and 256 transitions. [2023-11-29 02:19:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:19:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 189 [2023-11-29 02:19:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:47,285 INFO L225 Difference]: With dead ends: 139 [2023-11-29 02:19:47,285 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 02:19:47,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:19:47,293 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:47,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:19:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 02:19:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-29 02:19:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 02:19:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 108 transitions. [2023-11-29 02:19:47,346 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 108 transitions. Word has length 189 [2023-11-29 02:19:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:47,346 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 108 transitions. [2023-11-29 02:19:47,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 02:19:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 108 transitions. [2023-11-29 02:19:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 02:19:47,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:47,364 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:47,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:19:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:47,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:47,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash -974477399, now seen corresponding path program 1 times [2023-11-29 02:19:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:19:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351478442] [2023-11-29 02:19:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:47,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:19:47,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:19:47,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:19:47,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24b90ed8-4515-42a9-877f-4101bfcb0b97/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 02:19:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:48,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 02:19:48,438 INFO L285 TraceCheckSpWp]: Computing forward predicates...