./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cefce1e082ba19bdab32bd25d6d8c4c5179b384e1b7a368e743da81f29016498 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:36,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:36,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:07:36,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:36,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:36,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:36,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:36,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:36,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:36,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:36,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:36,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:36,136 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:36,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:36,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:36,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:36,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:36,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:36,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:36,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:36,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:36,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:36,143 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:36,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:36,144 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:36,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:36,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:36,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:36,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:36,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:36,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:36,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:36,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:36,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:36,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:36,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:36,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:36,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:36,161 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:36,161 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_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cefce1e082ba19bdab32bd25d6d8c4c5179b384e1b7a368e743da81f29016498 [2023-11-12 02:07:36,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:36,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:36,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:36,462 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:36,463 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:36,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i [2023-11-12 02:07:39,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:39,791 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:39,792 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i [2023-11-12 02:07:39,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/data/3e065ff82/6df14f9ef81249b4a0240e3ed93ec067/FLAGe7efdbd33 [2023-11-12 02:07:39,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/data/3e065ff82/6df14f9ef81249b4a0240e3ed93ec067 [2023-11-12 02:07:39,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:39,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:39,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:39,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:39,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:39,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:39" (1/1) ... [2023-11-12 02:07:39,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e041001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:39, skipping insertion in model container [2023-11-12 02:07:39,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:39" (1/1) ... [2023-11-12 02:07:39,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:40,070 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_4edf2dda-6d10-46f2-8875-c9890ffe18c8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i[916,929] [2023-11-12 02:07:40,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:40,202 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:40,221 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_4edf2dda-6d10-46f2-8875-c9890ffe18c8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-41.i[916,929] [2023-11-12 02:07:40,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:40,343 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:40,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40 WrapperNode [2023-11-12 02:07:40,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:40,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:40,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:40,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:40,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,435 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-11-12 02:07:40,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:40,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:40,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:40,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:40,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:40,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:40,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:40,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:40,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (1/1) ... [2023-11-12 02:07:40,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:40,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:40,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:07:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:07:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:40,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:40,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:41,335 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:41,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:41,342 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:07:41,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:41 BoogieIcfgContainer [2023-11-12 02:07:41,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:41,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:41,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:41,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:41,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:39" (1/3) ... [2023-11-12 02:07:41,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e25b91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:41, skipping insertion in model container [2023-11-12 02:07:41,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:40" (2/3) ... [2023-11-12 02:07:41,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e25b91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:41, skipping insertion in model container [2023-11-12 02:07:41,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:41" (3/3) ... [2023-11-12 02:07:41,370 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-41.i [2023-11-12 02:07:41,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:41,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:07:41,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:41,451 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;@2d4a9f54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:41,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:07:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 64 states have (on average 1.453125) internal successors, (93), 65 states have internal predecessors, (93), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:07:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:07:41,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:41,475 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:41,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:41,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash -706290804, now seen corresponding path program 1 times [2023-11-12 02:07:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739280084] [2023-11-12 02:07:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739280084] [2023-11-12 02:07:41,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:07:41,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501568159] [2023-11-12 02:07:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:41,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:41,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:42,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:07:42,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-11-12 02:07:42,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:42,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501568159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:42,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190778040] [2023-11-12 02:07:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:07:42,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:42,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:07:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:42,346 INFO L87 Difference]: Start difference. First operand has 99 states, 64 states have (on average 1.453125) internal successors, (93), 65 states have internal predecessors, (93), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:07:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:42,394 INFO L93 Difference]: Finished difference Result 191 states and 340 transitions. [2023-11-12 02:07:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:07:42,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 206 [2023-11-12 02:07:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:42,406 INFO L225 Difference]: With dead ends: 191 [2023-11-12 02:07:42,406 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 02:07:42,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:42,414 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:42,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 02:07:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-12 02:07:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:07:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 150 transitions. [2023-11-12 02:07:42,489 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 150 transitions. Word has length 206 [2023-11-12 02:07:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:42,490 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 150 transitions. [2023-11-12 02:07:42,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:07:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 150 transitions. [2023-11-12 02:07:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:07:42,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:42,506 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:42,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:07:42,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:42,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -221002220, now seen corresponding path program 1 times [2023-11-12 02:07:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399749496] [2023-11-12 02:07:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:42,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472749827] [2023-11-12 02:07:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:42,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:42,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:42,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:42,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:43,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:43,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 960 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-11-12 02:07:43,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:43,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399749496] [2023-11-12 02:07:43,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:43,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472749827] [2023-11-12 02:07:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472749827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:43,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:07:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646388690] [2023-11-12 02:07:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:43,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:43,372 INFO L87 Difference]: Start difference. First operand 95 states and 150 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:07:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:43,778 INFO L93 Difference]: Finished difference Result 279 states and 444 transitions. [2023-11-12 02:07:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:43,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 206 [2023-11-12 02:07:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:43,784 INFO L225 Difference]: With dead ends: 279 [2023-11-12 02:07:43,784 INFO L226 Difference]: Without dead ends: 187 [2023-11-12 02:07:43,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:43,787 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 201 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:43,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 534 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:07:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-12 02:07:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 98. [2023-11-12 02:07:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:07:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 154 transitions. [2023-11-12 02:07:43,817 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 154 transitions. Word has length 206 [2023-11-12 02:07:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:43,819 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 154 transitions. [2023-11-12 02:07:43,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:07:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 154 transitions. [2023-11-12 02:07:43,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:07:43,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:43,823 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:43,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:44,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:44,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash 459056150, now seen corresponding path program 1 times [2023-11-12 02:07:44,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:44,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708233789] [2023-11-12 02:07:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:44,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:44,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:44,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761766298] [2023-11-12 02:07:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:44,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:44,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:44,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:44,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:44,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1021 proven. 48 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-11-12 02:07:44,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 45 proven. 48 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-12 02:07:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:44,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708233789] [2023-11-12 02:07:44,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:44,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761766298] [2023-11-12 02:07:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761766298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:44,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:07:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261612308] [2023-11-12 02:07:44,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:44,764 INFO L87 Difference]: Start difference. First operand 98 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-11-12 02:07:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:45,066 INFO L93 Difference]: Finished difference Result 201 states and 312 transitions. [2023-11-12 02:07:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:07:45,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 206 [2023-11-12 02:07:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:45,070 INFO L225 Difference]: With dead ends: 201 [2023-11-12 02:07:45,070 INFO L226 Difference]: Without dead ends: 106 [2023-11-12 02:07:45,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:45,073 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 224 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:45,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 271 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-12 02:07:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2023-11-12 02:07:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.373134328358209) internal successors, (92), 67 states have internal predecessors, (92), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:07:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 156 transitions. [2023-11-12 02:07:45,099 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 156 transitions. Word has length 206 [2023-11-12 02:07:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:45,101 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 156 transitions. [2023-11-12 02:07:45,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-11-12 02:07:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 156 transitions. [2023-11-12 02:07:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:07:45,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:45,105 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:45,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:45,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:07:45,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:45,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 881757976, now seen corresponding path program 1 times [2023-11-12 02:07:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529877126] [2023-11-12 02:07:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:45,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428415677] [2023-11-12 02:07:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:45,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:45,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:45,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:45,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:07:45,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-12 02:07:45,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:45,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:45,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529877126] [2023-11-12 02:07:45,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:45,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428415677] [2023-11-12 02:07:45,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428415677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:45,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:45,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:45,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270467804] [2023-11-12 02:07:45,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:45,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:45,988 INFO L87 Difference]: Start difference. First operand 102 states and 156 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:07:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:46,176 INFO L93 Difference]: Finished difference Result 298 states and 459 transitions. [2023-11-12 02:07:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 206 [2023-11-12 02:07:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:46,181 INFO L225 Difference]: With dead ends: 298 [2023-11-12 02:07:46,181 INFO L226 Difference]: Without dead ends: 199 [2023-11-12 02:07:46,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:46,187 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 253 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:46,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 275 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-12 02:07:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2023-11-12 02:07:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 127 states have (on average 1.3543307086614174) internal successors, (172), 127 states have internal predecessors, (172), 64 states have call successors, (64), 4 states have call predecessors, (64), 4 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-12 02:07:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 300 transitions. [2023-11-12 02:07:46,262 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 300 transitions. Word has length 206 [2023-11-12 02:07:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:46,263 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 300 transitions. [2023-11-12 02:07:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:07:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 300 transitions. [2023-11-12 02:07:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:07:46,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:46,270 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:46,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:46,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:46,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -819998634, now seen corresponding path program 1 times [2023-11-12 02:07:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588244868] [2023-11-12 02:07:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:46,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:46,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780246780] [2023-11-12 02:07:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:46,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:46,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 02:07:46,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1104 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-12 02:08:19,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588244868] [2023-11-12 02:08:19,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:08:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780246780] [2023-11-12 02:08:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780246780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:19,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-12 02:08:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70001623] [2023-11-12 02:08:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:19,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:08:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:08:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=176, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:08:19,524 INFO L87 Difference]: Start difference. First operand 196 states and 300 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-12 02:08:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:27,429 INFO L93 Difference]: Finished difference Result 771 states and 1177 transitions. [2023-11-12 02:08:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:08:27,430 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 206 [2023-11-12 02:08:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:27,436 INFO L225 Difference]: With dead ends: 771 [2023-11-12 02:08:27,436 INFO L226 Difference]: Without dead ends: 578 [2023-11-12 02:08:27,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=307, Invalid=505, Unknown=0, NotChecked=0, Total=812 [2023-11-12 02:08:27,439 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 935 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:27,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1031 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-12 02:08:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-11-12 02:08:27,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 333. [2023-11-12 02:08:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 230 states have (on average 1.3869565217391304) internal successors, (319), 230 states have internal predecessors, (319), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-12 02:08:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 511 transitions. [2023-11-12 02:08:27,574 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 511 transitions. Word has length 206 [2023-11-12 02:08:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:27,575 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 511 transitions. [2023-11-12 02:08:27,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 17 states have internal predecessors, (58), 4 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-12 02:08:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 511 transitions. [2023-11-12 02:08:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-12 02:08:27,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:27,579 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:27,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:08:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:27,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:08:27,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -139940264, now seen corresponding path program 1 times [2023-11-12 02:08:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489278391] [2023-11-12 02:08:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:27,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:08:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781570178] [2023-11-12 02:08:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:08:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:27,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:08:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4edf2dda-6d10-46f2-8875-c9890ffe18c8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:08:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:28,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:08:28,057 INFO L285 TraceCheckSpWp]: Computing forward predicates...