./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/as2013-hybrid.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/as2013-hybrid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f4877babf2234c4d9f84af37e06b0d1c35e333b586df80a0a3a6ac5b1b8e2d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:06,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:06,143 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:06,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:06,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:06,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:06,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:06,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:06,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:06,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:06,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:06,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:06,181 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:06,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:06,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:06,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:06,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:06,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:06,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:06,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:06,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:06,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:06,187 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:06,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:06,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:06,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:06,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:06,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:06,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:06,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:06,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:06,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:06,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:06,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:06,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:06,193 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:06,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:06,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:06,194 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:06,195 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_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f4877babf2234c4d9f84af37e06b0d1c35e333b586df80a0a3a6ac5b1b8e2d2 [2023-11-19 08:02:06,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:06,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:06,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:06,504 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:06,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:06,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-lit/as2013-hybrid.i [2023-11-19 08:02:09,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:09,913 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:09,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/sv-benchmarks/c/loop-lit/as2013-hybrid.i [2023-11-19 08:02:09,923 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/data/48d79d024/9c2ddc39d73f4ab6a92699bc0ffd6bda/FLAG26b2b9606 [2023-11-19 08:02:09,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/data/48d79d024/9c2ddc39d73f4ab6a92699bc0ffd6bda [2023-11-19 08:02:09,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:09,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:09,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:09,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:09,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:09,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:09" (1/1) ... [2023-11-19 08:02:09,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f84135c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:09, skipping insertion in model container [2023-11-19 08:02:09,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:09" (1/1) ... [2023-11-19 08:02:09,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:10,136 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_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/sv-benchmarks/c/loop-lit/as2013-hybrid.i[802,815] [2023-11-19 08:02:10,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:10,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:10,173 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_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/sv-benchmarks/c/loop-lit/as2013-hybrid.i[802,815] [2023-11-19 08:02:10,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:10,192 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:10,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10 WrapperNode [2023-11-19 08:02:10,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:10,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:10,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:10,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:10,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,228 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-11-19 08:02:10,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:10,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:10,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:10,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:10,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:10,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:10,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:10,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:10,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (1/1) ... [2023-11-19 08:02:10,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:10,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:10,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:02:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:02:10,386 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:10,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:10,511 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:10,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:10,519 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:02:10,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:10 BoogieIcfgContainer [2023-11-19 08:02:10,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:10,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:10,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:10,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:10,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:09" (1/3) ... [2023-11-19 08:02:10,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f1a328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:10, skipping insertion in model container [2023-11-19 08:02:10,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:10" (2/3) ... [2023-11-19 08:02:10,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f1a328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:10, skipping insertion in model container [2023-11-19 08:02:10,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:10" (3/3) ... [2023-11-19 08:02:10,532 INFO L112 eAbstractionObserver]: Analyzing ICFG as2013-hybrid.i [2023-11-19 08:02:10,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:10,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:10,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:10,600 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;@1a0b02a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:10,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:02:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 08:02:10,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:10,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:10,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:10,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 302533923, now seen corresponding path program 1 times [2023-11-19 08:02:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372519915] [2023-11-19 08:02:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:11,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372519915] [2023-11-19 08:02:11,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372519915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:11,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:11,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:02:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391137343] [2023-11-19 08:02:11,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:11,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:11,068 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:11,155 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2023-11-19 08:02:11,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:11,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 08:02:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:11,164 INFO L225 Difference]: With dead ends: 38 [2023-11-19 08:02:11,164 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 08:02:11,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:11,171 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:11,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 08:02:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-11-19 08:02:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:02:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-19 08:02:11,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2023-11-19 08:02:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:11,209 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-19 08:02:11,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-19 08:02:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:02:11,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:11,211 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:11,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1478173369, now seen corresponding path program 1 times [2023-11-19 08:02:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117805327] [2023-11-19 08:02:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:02:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:11,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:11,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117805327] [2023-11-19 08:02:11,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117805327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:02:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578433010] [2023-11-19 08:02:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:11,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:11,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:11,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:11,460 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:02:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:11,512 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-11-19 08:02:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:11,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 08:02:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:11,515 INFO L225 Difference]: With dead ends: 49 [2023-11-19 08:02:11,515 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 08:02:11,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:11,517 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 70 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 08:02:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-19 08:02:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:02:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-19 08:02:11,531 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 13 [2023-11-19 08:02:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:11,532 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-19 08:02:11,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:02:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-19 08:02:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 08:02:11,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:11,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:11,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash -601669730, now seen corresponding path program 1 times [2023-11-19 08:02:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084544092] [2023-11-19 08:02:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084544092] [2023-11-19 08:02:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084544092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:11,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883428136] [2023-11-19 08:02:11,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:11,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:11,580 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:02:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:11,599 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2023-11-19 08:02:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-19 08:02:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:11,601 INFO L225 Difference]: With dead ends: 66 [2023-11-19 08:02:11,601 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 08:02:11,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:11,604 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 08:02:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-11-19 08:02:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:02:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-19 08:02:11,616 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2023-11-19 08:02:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:11,617 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-19 08:02:11,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:02:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-19 08:02:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:02:11,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:11,619 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:11,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:11,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:11,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash -824215651, now seen corresponding path program 1 times [2023-11-19 08:02:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:11,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650925093] [2023-11-19 08:02:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:02:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:02:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:02:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650925093] [2023-11-19 08:02:11,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650925093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597599119] [2023-11-19 08:02:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:11,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:11,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:11,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:11,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:11,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:02:11,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:02:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597599119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:11,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:02:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 08:02:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869661988] [2023-11-19 08:02:11,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:02:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:02:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:11,918 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 08:02:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:12,009 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2023-11-19 08:02:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 29 [2023-11-19 08:02:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:12,015 INFO L225 Difference]: With dead ends: 86 [2023-11-19 08:02:12,015 INFO L226 Difference]: Without dead ends: 56 [2023-11-19 08:02:12,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:12,018 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:12,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-19 08:02:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-19 08:02:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:02:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-11-19 08:02:12,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 29 [2023-11-19 08:02:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:12,046 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-11-19 08:02:12,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 08:02:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-11-19 08:02:12,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 08:02:12,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:12,051 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:12,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:12,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:12,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1254033254, now seen corresponding path program 2 times [2023-11-19 08:02:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:12,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487531115] [2023-11-19 08:02:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:02:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-19 08:02:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:02:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 08:02:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 08:02:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:02:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:02:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 08:02:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:02:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-19 08:02:12,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:12,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487531115] [2023-11-19 08:02:12,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487531115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:12,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:02:12,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015995710] [2023-11-19 08:02:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:12,444 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:02:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:12,496 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-11-19 08:02:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:02:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2023-11-19 08:02:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:12,498 INFO L225 Difference]: With dead ends: 56 [2023-11-19 08:02:12,498 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:02:12,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:12,503 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:12,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:02:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:02:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-19 08:02:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:02:12,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2023-11-19 08:02:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:12,510 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:02:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:02:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:02:12,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:02:12,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:02:12,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:02:12,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 08:02:12,753 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 08:02:12,755 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-19 08:02:12,755 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|)) [2023-11-19 08:02:12,755 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 16 26) no Hoare annotation was computed. [2023-11-19 08:02:12,755 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 08:02:12,756 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 28) no Hoare annotation was computed. [2023-11-19 08:02:12,756 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 08:02:12,756 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 08:02:12,756 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 25) no Hoare annotation was computed. [2023-11-19 08:02:12,756 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 9)) [2023-11-19 08:02:12,756 INFO L895 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 9)) [2023-11-19 08:02:12,757 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 26) the Hoare annotation is: (or (= |ULTIMATE.start_main_~i~0#1| 0) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 9))) [2023-11-19 08:02:12,757 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 26) no Hoare annotation was computed. [2023-11-19 08:02:12,757 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-11-19 08:02:12,757 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-11-19 08:02:12,757 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-11-19 08:02:12,757 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-11-19 08:02:12,757 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-11-19 08:02:12,758 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-19 08:02:12,761 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-19 08:02:12,763 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:02:12,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:02:12 BoogieIcfgContainer [2023-11-19 08:02:12,779 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:02:12,780 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:02:12,780 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:02:12,780 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:02:12,781 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:10" (3/4) ... [2023-11-19 08:02:12,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:02:12,787 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 08:02:12,792 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 08:02:12,792 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:02:12,793 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:02:12,793 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:02:12,890 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:02:12,890 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:02:12,891 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:02:12,891 INFO L158 Benchmark]: Toolchain (without parser) took 2939.32ms. Allocated memory is still 157.3MB. Free memory was 114.9MB in the beginning and 77.1MB in the end (delta: 37.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,891 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:02:12,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 104.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.85ms. Allocated memory is still 157.3MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,893 INFO L158 Benchmark]: Boogie Preprocessor took 22.35ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 101.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,893 INFO L158 Benchmark]: RCFGBuilder took 269.94ms. Allocated memory is still 157.3MB. Free memory was 101.6MB in the beginning and 92.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,893 INFO L158 Benchmark]: TraceAbstraction took 2253.93ms. Allocated memory is still 157.3MB. Free memory was 91.9MB in the beginning and 81.3MB in the end (delta: 10.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,894 INFO L158 Benchmark]: Witness Printer took 110.70ms. Allocated memory is still 157.3MB. Free memory was 81.3MB in the beginning and 77.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:02:12,897 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 104.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.85ms. Allocated memory is still 157.3MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.35ms. Allocated memory is still 157.3MB. Free memory was 103.0MB in the beginning and 101.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.94ms. Allocated memory is still 157.3MB. Free memory was 101.6MB in the beginning and 92.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2253.93ms. Allocated memory is still 157.3MB. Free memory was 91.9MB in the beginning and 81.3MB in the end (delta: 10.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Witness Printer took 110.70ms. Allocated memory is still 157.3MB. Free memory was 81.3MB in the beginning and 77.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 75 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 32 PreInvPairs, 60 NumberOfFragments, 39 HoareAnnotationTreeSize, 32 FomulaSimplifications, 286 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 169 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 279/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((i <= 10) && (1 <= i)) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((i == 0) || ((1 <= i) && (i <= 9))) RESULT: Ultimate proved your program to be correct! [2023-11-19 08:02:12,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8e9e8e-2340-491c-b76c-fff7cb19ad51/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE