./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/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_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/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 64bit --witnessprinter.graph.data.programhash c4ee3cc6e8622c75ac6e30d869f1e6e3cc79384ffcebb29fb6a2d62a2b462138 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:03:25,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:03:25,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 07:03:25,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:03:25,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:03:25,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:03:25,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:03:25,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:03:25,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:03:25,345 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:03:25,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:03:25,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:03:25,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:03:25,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:03:25,347 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:03:25,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:03:25,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:03:25,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:03:25,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:03:25,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:03:25,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:03:25,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:03:25,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:03:25,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:03:25,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:03:25,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:03:25,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:03:25,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:03:25,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:03:25,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:03:25,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:03:25,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:03:25,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:03:25,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:03:25,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:03:25,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:03:25,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:03:25,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:03:25,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:03:25,364 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_231a40e0-eb16-4cbb-9b6f-48936a1e8626/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4ee3cc6e8622c75ac6e30d869f1e6e3cc79384ffcebb29fb6a2d62a2b462138 [2023-11-29 07:03:25,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:03:25,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:03:25,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:03:25,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:03:25,633 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:03:25,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c [2023-11-29 07:03:28,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:03:28,942 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:03:28,943 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c [2023-11-29 07:03:28,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/data/03974f073/e5ba0a54b2b24430a12edd8dcc342304/FLAGcedc4041a [2023-11-29 07:03:29,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/data/03974f073/e5ba0a54b2b24430a12edd8dcc342304 [2023-11-29 07:03:29,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:03:29,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:03:29,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:03:29,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:03:29,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:03:29,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:03:29" (1/1) ... [2023-11-29 07:03:29,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f318cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:29, skipping insertion in model container [2023-11-29 07:03:29,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:03:29" (1/1) ... [2023-11-29 07:03:29,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:03:29,645 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_231a40e0-eb16-4cbb-9b6f-48936a1e8626/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c[1246,1259] [2023-11-29 07:03:31,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:03:31,437 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:03:31,450 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_231a40e0-eb16-4cbb-9b6f-48936a1e8626/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal151.c[1246,1259] [2023-11-29 07:03:32,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:03:32,729 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:03:32,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32 WrapperNode [2023-11-29 07:03:32,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:03:32,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:03:32,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:03:32,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:03:32,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:33,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:37,250 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57665 [2023-11-29 07:03:37,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:03:37,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:03:37,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:03:37,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:03:37,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:37,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:38,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:38,611 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 07:03:38,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:38,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:39,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:39,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:39,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:40,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:40,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:03:40,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:03:40,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:03:40,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:03:40,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (1/1) ... [2023-11-29 07:03:40,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:03:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:03:40,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:03:40,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:03:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:03:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:03:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:03:40,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:03:43,401 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:03:43,403 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:04:16,387 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:04:17,039 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:04:17,040 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:04:17,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:17 BoogieIcfgContainer [2023-11-29 07:04:17,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:04:17,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:04:17,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:04:17,051 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:04:17,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:03:29" (1/3) ... [2023-11-29 07:04:17,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b7cab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:17, skipping insertion in model container [2023-11-29 07:04:17,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:03:32" (2/3) ... [2023-11-29 07:04:17,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b7cab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:17, skipping insertion in model container [2023-11-29 07:04:17,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:17" (3/3) ... [2023-11-29 07:04:17,054 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal151.c [2023-11-29 07:04:17,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:04:17,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:04:17,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:04:17,231 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;@48e48662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:04:17,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:04:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 11990 states, 11988 states have (on average 1.6672505839172507) internal successors, (19987), 11989 states have internal predecessors, (19987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-29 07:04:17,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:17,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:17,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:17,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -472807335, now seen corresponding path program 1 times [2023-11-29 07:04:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917092968] [2023-11-29 07:04:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:17,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:04:17,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315080247] [2023-11-29 07:04:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:17,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:17,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:04:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:20,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:04:20,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:21,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:04:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917092968] [2023-11-29 07:04:21,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:04:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315080247] [2023-11-29 07:04:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315080247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:21,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:21,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013568477] [2023-11-29 07:04:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:21,161 INFO L87 Difference]: Start difference. First operand has 11990 states, 11988 states have (on average 1.6672505839172507) internal successors, (19987), 11989 states have internal predecessors, (19987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:21,595 INFO L93 Difference]: Finished difference Result 23697 states and 39505 transitions. [2023-11-29 07:04:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2023-11-29 07:04:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:21,662 INFO L225 Difference]: With dead ends: 23697 [2023-11-29 07:04:21,662 INFO L226 Difference]: Without dead ends: 11990 [2023-11-29 07:04:21,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 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 07:04:21,682 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:21,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:04:21,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2023-11-29 07:04:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11989. [2023-11-29 07:04:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6667500834167501) internal successors, (19981), 11988 states have internal predecessors, (19981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19981 transitions. [2023-11-29 07:04:22,014 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19981 transitions. Word has length 407 [2023-11-29 07:04:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:22,016 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19981 transitions. [2023-11-29 07:04:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19981 transitions. [2023-11-29 07:04:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-29 07:04:22,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:22,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:22,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:04:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 07:04:22,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1153119029, now seen corresponding path program 1 times [2023-11-29 07:04:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412465720] [2023-11-29 07:04:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:22,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:04:22,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673581844] [2023-11-29 07:04:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:22,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:22,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:22,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:22,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:04:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:25,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 07:04:25,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:29,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:04:29,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:29,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412465720] [2023-11-29 07:04:29,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:04:29,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673581844] [2023-11-29 07:04:29,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673581844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:29,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:29,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 07:04:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384238283] [2023-11-29 07:04:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:29,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 07:04:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:04:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:04:29,368 INFO L87 Difference]: Start difference. First operand 11989 states and 19981 transitions. Second operand has 13 states, 13 states have (on average 31.307692307692307) internal successors, (407), 12 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:59,076 INFO L93 Difference]: Finished difference Result 82439 states and 137391 transitions. [2023-11-29 07:04:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 07:04:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 31.307692307692307) internal successors, (407), 12 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2023-11-29 07:04:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:59,468 INFO L225 Difference]: With dead ends: 82439 [2023-11-29 07:04:59,469 INFO L226 Difference]: Without dead ends: 70733 [2023-11-29 07:04:59,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 07:04:59,488 INFO L413 NwaCegarLoop]: 17393 mSDtfsCounter, 290122 mSDsluCounter, 138325 mSDsCounter, 0 mSdLazyCounter, 28148 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290122 SdHoareTripleChecker+Valid, 155718 SdHoareTripleChecker+Invalid, 28161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:59,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290122 Valid, 155718 Invalid, 28161 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [13 Valid, 28148 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2023-11-29 07:04:59,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70733 states. [2023-11-29 07:04:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70733 to 12097. [2023-11-29 07:04:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12097 states, 12096 states have (on average 1.6664186507936507) internal successors, (20157), 12096 states have internal predecessors, (20157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12097 states to 12097 states and 20157 transitions. [2023-11-29 07:04:59,893 INFO L78 Accepts]: Start accepts. Automaton has 12097 states and 20157 transitions. Word has length 407 [2023-11-29 07:04:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:59,894 INFO L495 AbstractCegarLoop]: Abstraction has 12097 states and 20157 transitions. [2023-11-29 07:04:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.307692307692307) internal successors, (407), 12 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 12097 states and 20157 transitions. [2023-11-29 07:04:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 07:04:59,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:59,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:04:59,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:05:00,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:00,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:00,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -202705051, now seen corresponding path program 1 times [2023-11-29 07:05:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889186070] [2023-11-29 07:05:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:00,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147697734] [2023-11-29 07:05:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:00,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:00,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:00,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:05:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:03,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 07:05:03,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:04,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:04,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:04,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889186070] [2023-11-29 07:05:04,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147697734] [2023-11-29 07:05:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147697734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:04,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 07:05:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515148327] [2023-11-29 07:05:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:04,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:05:04,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:05:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:05:04,243 INFO L87 Difference]: Start difference. First operand 12097 states and 20157 transitions. Second operand has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 14 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:08,292 INFO L93 Difference]: Finished difference Result 59401 states and 98961 transitions. [2023-11-29 07:05:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 07:05:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 14 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2023-11-29 07:05:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:08,391 INFO L225 Difference]: With dead ends: 59401 [2023-11-29 07:05:08,391 INFO L226 Difference]: Without dead ends: 47587 [2023-11-29 07:05:08,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=435, Invalid=2015, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 07:05:08,405 INFO L413 NwaCegarLoop]: 39712 mSDtfsCounter, 136362 mSDsluCounter, 395967 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136362 SdHoareTripleChecker+Valid, 435679 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:08,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136362 Valid, 435679 Invalid, 1072 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [12 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:05:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47587 states. [2023-11-29 07:05:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47587 to 12115. [2023-11-29 07:05:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6656760772659733) internal successors, (20178), 12114 states have internal predecessors, (20178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20178 transitions. [2023-11-29 07:05:08,740 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20178 transitions. Word has length 409 [2023-11-29 07:05:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:08,741 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20178 transitions. [2023-11-29 07:05:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 14 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20178 transitions. [2023-11-29 07:05:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 07:05:08,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:08,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:08,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:08,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:08,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1195695885, now seen corresponding path program 1 times [2023-11-29 07:05:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407633878] [2023-11-29 07:05:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:09,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:09,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105580879] [2023-11-29 07:05:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:09,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:09,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:09,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:05:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:11,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:05:11,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:11,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407633878] [2023-11-29 07:05:11,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105580879] [2023-11-29 07:05:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105580879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:11,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106734039] [2023-11-29 07:05:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:11,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:11,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:11,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:11,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:11,785 INFO L87 Difference]: Start difference. First operand 12115 states and 20178 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:11,984 INFO L93 Difference]: Finished difference Result 23948 states and 39887 transitions. [2023-11-29 07:05:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2023-11-29 07:05:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:12,000 INFO L225 Difference]: With dead ends: 23948 [2023-11-29 07:05:12,000 INFO L226 Difference]: Without dead ends: 12116 [2023-11-29 07:05:12,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 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 07:05:12,010 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:12,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:12,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12116 states. [2023-11-29 07:05:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12116 to 12115. [2023-11-29 07:05:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6655935281492489) internal successors, (20177), 12114 states have internal predecessors, (20177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20177 transitions. [2023-11-29 07:05:12,174 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20177 transitions. Word has length 409 [2023-11-29 07:05:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20177 transitions. [2023-11-29 07:05:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20177 transitions. [2023-11-29 07:05:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 07:05:12,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:12,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:12,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:05:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:12,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:12,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1709402473, now seen corresponding path program 1 times [2023-11-29 07:05:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464795748] [2023-11-29 07:05:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:12,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:12,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800649289] [2023-11-29 07:05:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:12,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:12,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:12,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:05:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:15,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:05:15,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:15,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464795748] [2023-11-29 07:05:15,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800649289] [2023-11-29 07:05:15,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800649289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:15,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:15,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:15,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844015105] [2023-11-29 07:05:15,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:15,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:05:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:15,248 INFO L87 Difference]: Start difference. First operand 12115 states and 20177 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:15,466 INFO L93 Difference]: Finished difference Result 23948 states and 39885 transitions. [2023-11-29 07:05:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2023-11-29 07:05:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:15,480 INFO L225 Difference]: With dead ends: 23948 [2023-11-29 07:05:15,481 INFO L226 Difference]: Without dead ends: 12116 [2023-11-29 07:05:15,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 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 07:05:15,493 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:15,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:05:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12116 states. [2023-11-29 07:05:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12116 to 12115. [2023-11-29 07:05:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6655109790325244) internal successors, (20176), 12114 states have internal predecessors, (20176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20176 transitions. [2023-11-29 07:05:15,678 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20176 transitions. Word has length 409 [2023-11-29 07:05:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:15,679 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20176 transitions. [2023-11-29 07:05:15,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20176 transitions. [2023-11-29 07:05:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-29 07:05:15,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:15,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:15,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:05:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:15,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:15,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1982490365, now seen corresponding path program 1 times [2023-11-29 07:05:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660501888] [2023-11-29 07:05:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:16,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795715795] [2023-11-29 07:05:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:16,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:16,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:16,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:05:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:18,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 07:05:18,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:19,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660501888] [2023-11-29 07:05:19,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795715795] [2023-11-29 07:05:19,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795715795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:19,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:05:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791394051] [2023-11-29 07:05:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:05:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:05:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:05:19,542 INFO L87 Difference]: Start difference. First operand 12115 states and 20176 transitions. Second operand has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:21,612 INFO L93 Difference]: Finished difference Result 59677 states and 99368 transitions. [2023-11-29 07:05:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:05:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2023-11-29 07:05:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:21,673 INFO L225 Difference]: With dead ends: 59677 [2023-11-29 07:05:21,673 INFO L226 Difference]: Without dead ends: 47845 [2023-11-29 07:05:21,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2023-11-29 07:05:21,688 INFO L413 NwaCegarLoop]: 20468 mSDtfsCounter, 271015 mSDsluCounter, 101327 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271015 SdHoareTripleChecker+Valid, 121795 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:21,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271015 Valid, 121795 Invalid, 245 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:05:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47845 states. [2023-11-29 07:05:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47845 to 12118. [2023-11-29 07:05:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6652636791284972) internal successors, (20178), 12117 states have internal predecessors, (20178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20178 transitions. [2023-11-29 07:05:22,039 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20178 transitions. Word has length 410 [2023-11-29 07:05:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20178 transitions. [2023-11-29 07:05:22,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20178 transitions. [2023-11-29 07:05:22,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-29 07:05:22,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:22,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:22,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:05:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 07:05:22,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:22,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 470826201, now seen corresponding path program 1 times [2023-11-29 07:05:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733221654] [2023-11-29 07:05:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:22,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020328312] [2023-11-29 07:05:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:22,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:22,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:05:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:25,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 07:05:25,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:25,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:25,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733221654] [2023-11-29 07:05:25,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020328312] [2023-11-29 07:05:25,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020328312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491359465] [2023-11-29 07:05:25,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:25,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:05:25,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:05:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:05:25,681 INFO L87 Difference]: Start difference. First operand 12118 states and 20178 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:26,198 INFO L93 Difference]: Finished difference Result 23953 states and 39885 transitions. [2023-11-29 07:05:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:05:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 411 [2023-11-29 07:05:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:26,208 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 07:05:26,208 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 07:05:26,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:05:26,215 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 19730 mSDsluCounter, 19812 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19730 SdHoareTripleChecker+Valid, 39625 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:26,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19730 Valid, 39625 Invalid, 329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:05:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 07:05:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 07:05:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6650986217710655) internal successors, (20176), 12117 states have internal predecessors, (20176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20176 transitions. [2023-11-29 07:05:26,333 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20176 transitions. Word has length 411 [2023-11-29 07:05:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:26,334 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20176 transitions. [2023-11-29 07:05:26,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20176 transitions. [2023-11-29 07:05:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-29 07:05:26,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:26,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:26,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:05:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:26,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:26,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1911876853, now seen corresponding path program 1 times [2023-11-29 07:05:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82437229] [2023-11-29 07:05:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:26,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:26,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226593792] [2023-11-29 07:05:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:26,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:26,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:26,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:26,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:05:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:29,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 07:05:29,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:29,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:29,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82437229] [2023-11-29 07:05:29,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:29,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226593792] [2023-11-29 07:05:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226593792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:29,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:29,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:05:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527447993] [2023-11-29 07:05:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:05:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:05:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:05:29,886 INFO L87 Difference]: Start difference. First operand 12118 states and 20176 transitions. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:30,614 INFO L93 Difference]: Finished difference Result 23953 states and 39881 transitions. [2023-11-29 07:05:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:05:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2023-11-29 07:05:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:30,623 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 07:05:30,623 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 07:05:30,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:05:30,630 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 39540 mSDsluCounter, 39624 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39540 SdHoareTripleChecker+Valid, 59437 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:30,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39540 Valid, 59437 Invalid, 488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:05:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 07:05:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 07:05:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6649335644136338) internal successors, (20174), 12117 states have internal predecessors, (20174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20174 transitions. [2023-11-29 07:05:30,742 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20174 transitions. Word has length 412 [2023-11-29 07:05:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:30,742 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20174 transitions. [2023-11-29 07:05:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20174 transitions. [2023-11-29 07:05:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-29 07:05:30,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:30,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:30,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:05:30,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:30,945 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:30,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1288422479, now seen corresponding path program 1 times [2023-11-29 07:05:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:30,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398117843] [2023-11-29 07:05:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:31,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:31,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577340012] [2023-11-29 07:05:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:31,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:31,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:31,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:31,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:05:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:33,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 07:05:33,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:34,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398117843] [2023-11-29 07:05:34,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577340012] [2023-11-29 07:05:34,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577340012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:34,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:34,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:05:34,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103742686] [2023-11-29 07:05:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:34,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:05:34,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:05:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:05:34,256 INFO L87 Difference]: Start difference. First operand 12118 states and 20174 transitions. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:34,918 INFO L93 Difference]: Finished difference Result 23953 states and 39877 transitions. [2023-11-29 07:05:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:05:34,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2023-11-29 07:05:34,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:34,926 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 07:05:34,926 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 07:05:34,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:05:34,934 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 39536 mSDsluCounter, 39624 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39536 SdHoareTripleChecker+Valid, 59437 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:34,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39536 Valid, 59437 Invalid, 486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:05:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 07:05:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 07:05:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.664768507056202) internal successors, (20172), 12117 states have internal predecessors, (20172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20172 transitions. [2023-11-29 07:05:35,055 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20172 transitions. Word has length 413 [2023-11-29 07:05:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:35,056 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20172 transitions. [2023-11-29 07:05:35,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20172 transitions. [2023-11-29 07:05:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-29 07:05:35,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:35,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:05:35,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:05:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:35,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:35,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1261356877, now seen corresponding path program 1 times [2023-11-29 07:05:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25814505] [2023-11-29 07:05:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:35,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:05:35,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826096923] [2023-11-29 07:05:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:35,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:35,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:35,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:35,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_231a40e0-eb16-4cbb-9b6f-48936a1e8626/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:05:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:37,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 161 conjunts are in the unsatisfiable core [2023-11-29 07:05:37,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:41,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:05:41,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25814505] [2023-11-29 07:05:41,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:05:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826096923] [2023-11-29 07:05:41,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826096923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:41,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:41,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2023-11-29 07:05:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604893002] [2023-11-29 07:05:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:41,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 07:05:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 07:05:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1729, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:05:41,185 INFO L87 Difference]: Start difference. First operand 12118 states and 20172 transitions. Second operand has 44 states, 44 states have (on average 9.386363636363637) internal successors, (413), 43 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)