./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 a2d7ec62f25a34cf5027fbfb72852316d19da9a92ce648f9721cd65c436423bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:27,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:27,305 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:27,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:27,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:27,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:27,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:27,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:27,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:27,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:27,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:27,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:27,340 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:27,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:27,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:27,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:27,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:27,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:27,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:27,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:27,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:27,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:27,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:27,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:27,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:27,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:27,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:27,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:27,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:27,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:27,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:27,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:27,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:27,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:27,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:27,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:27,359 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:27,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:27,360 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:27,360 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_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2d7ec62f25a34cf5027fbfb72852316d19da9a92ce648f9721cd65c436423bb [2023-11-06 21:53:27,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:27,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:27,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:27,648 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:27,649 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:27,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i [2023-11-06 21:53:30,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:31,024 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:31,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i [2023-11-06 21:53:31,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/data/5fd6447ed/4c5836c93365471ca5dfb909ef867ad9/FLAG500d0a866 [2023-11-06 21:53:31,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/data/5fd6447ed/4c5836c93365471ca5dfb909ef867ad9 [2023-11-06 21:53:31,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:31,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:31,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:31,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:31,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:31,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ba3447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:31,244 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_8a6e682c-aa63-4930-afb7-d5ac517927fa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i[915,928] [2023-11-06 21:53:31,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:31,287 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:31,301 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-92.i[915,928] [2023-11-06 21:53:31,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:31,333 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:31,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31 WrapperNode [2023-11-06 21:53:31,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:31,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:31,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:31,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:31,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,389 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 72 [2023-11-06 21:53:31,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:31,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:31,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:31,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:31,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:31,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:31,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:31,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:31,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:31,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:31,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:31,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:53:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:53:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:31,607 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:31,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:31,900 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:31,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:31,908 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:53:31,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:31 BoogieIcfgContainer [2023-11-06 21:53:31,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:31,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:31,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:31,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:31,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:31" (1/3) ... [2023-11-06 21:53:31,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2ed03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (2/3) ... [2023-11-06 21:53:31,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2ed03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:31" (3/3) ... [2023-11-06 21:53:31,934 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-92.i [2023-11-06 21:53:31,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:31,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:53:32,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:32,033 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=LoopsAndPotentialCycles, 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;@332cd959, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:32,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:53:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-06 21:53:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:53:32,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:32,052 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:32,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:32,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash -708507017, now seen corresponding path program 1 times [2023-11-06 21:53:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960711461] [2023-11-06 21:53:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960711461] [2023-11-06 21:53:32,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 21:53:32,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681574604] [2023-11-06 21:53:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:32,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:32,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:32,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:32,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:53:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:32,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:53:32,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-06 21:53:32,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:53:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681574604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:32,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022656429] [2023-11-06 21:53:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:32,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:53:32,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:53:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:53:32,589 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 21:53:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:32,615 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2023-11-06 21:53:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:53:32,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 67 [2023-11-06 21:53:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:32,626 INFO L225 Difference]: With dead ends: 67 [2023-11-06 21:53:32,626 INFO L226 Difference]: Without dead ends: 33 [2023-11-06 21:53:32,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:53:32,634 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2023-11-06 21:53:32,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:53:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-06 21:53:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-06 21:53:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-06 21:53:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-11-06 21:53:32,681 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 67 [2023-11-06 21:53:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:32,682 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-11-06 21:53:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 21:53:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-11-06 21:53:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:53:32,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:32,687 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:32,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:32,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 21:53:32,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:32,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -464471113, now seen corresponding path program 1 times [2023-11-06 21:53:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552313078] [2023-11-06 21:53:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:33,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:53:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122286329] [2023-11-06 21:53:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:33,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:33,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:33,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:33,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:53:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:33,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 21:53:33,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 126 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:53:37,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:53:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-06 21:53:39,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:39,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552313078] [2023-11-06 21:53:39,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:53:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122286329] [2023-11-06 21:53:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122286329] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2023-11-06 21:53:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118371013] [2023-11-06 21:53:39,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:39,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:53:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:53:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:53:39,403 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:39,838 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2023-11-06 21:53:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:53:39,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2023-11-06 21:53:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:39,842 INFO L225 Difference]: With dead ends: 88 [2023-11-06 21:53:39,842 INFO L226 Difference]: Without dead ends: 86 [2023-11-06 21:53:39,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2023-11-06 21:53:39,844 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 62 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 262 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:53:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-06 21:53:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2023-11-06 21:53:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 21:53:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2023-11-06 21:53:39,880 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 67 [2023-11-06 21:53:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:39,881 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2023-11-06 21:53:39,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2023-11-06 21:53:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:53:39,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:39,884 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:39,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:40,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:40,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:40,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:40,091 INFO L85 PathProgramCache]: Analyzing trace with hash -462624071, now seen corresponding path program 1 times [2023-11-06 21:53:40,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:40,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645896443] [2023-11-06 21:53:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:40,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:40,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:53:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168528555] [2023-11-06 21:53:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:40,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:40,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:40,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:40,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:53:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:40,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 21:53:40,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-06 21:53:41,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:53:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-06 21:53:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645896443] [2023-11-06 21:53:41,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:53:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168528555] [2023-11-06 21:53:41,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168528555] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:41,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:41,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-06 21:53:41,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527077268] [2023-11-06 21:53:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:41,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:53:41,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:41,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:53:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:53:41,733 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:42,145 INFO L93 Difference]: Finished difference Result 103 states and 132 transitions. [2023-11-06 21:53:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:53:42,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2023-11-06 21:53:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:42,150 INFO L225 Difference]: With dead ends: 103 [2023-11-06 21:53:42,150 INFO L226 Difference]: Without dead ends: 101 [2023-11-06 21:53:42,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:53:42,152 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 55 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:42,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 294 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:53:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-06 21:53:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 69. [2023-11-06 21:53:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 48 states have internal predecessors, (50), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:53:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2023-11-06 21:53:42,186 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 67 [2023-11-06 21:53:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:42,187 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2023-11-06 21:53:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2023-11-06 21:53:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:53:42,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:42,189 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:42,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:42,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:42,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1310536249, now seen corresponding path program 1 times [2023-11-06 21:53:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067759530] [2023-11-06 21:53:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:42,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:53:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468439437] [2023-11-06 21:53:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:42,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:42,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:42,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:53:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:42,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:53:42,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-06 21:53:45,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:53:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-06 21:53:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067759530] [2023-11-06 21:53:47,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:53:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468439437] [2023-11-06 21:53:47,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468439437] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:47,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:47,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-11-06 21:53:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45524375] [2023-11-06 21:53:47,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:47,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:53:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:53:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:53:47,243 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:47,464 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2023-11-06 21:53:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:53:47,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2023-11-06 21:53:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:47,467 INFO L225 Difference]: With dead ends: 101 [2023-11-06 21:53:47,467 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 21:53:47,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:53:47,468 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 28 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:47,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 350 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:53:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 21:53:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2023-11-06 21:53:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-06 21:53:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2023-11-06 21:53:47,491 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 67 [2023-11-06 21:53:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:47,491 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2023-11-06 21:53:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2023-11-06 21:53:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 21:53:47,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:47,494 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:47,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:47,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:47,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1312383291, now seen corresponding path program 1 times [2023-11-06 21:53:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461523468] [2023-11-06 21:53:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:47,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:53:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826602913] [2023-11-06 21:53:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:47,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:47,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:53:47,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:53:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:47,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 21:53:47,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:53:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-06 21:53:48,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:53:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-06 21:53:49,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461523468] [2023-11-06 21:53:49,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:53:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826602913] [2023-11-06 21:53:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826602913] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:53:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:53:49,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2023-11-06 21:53:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084676328] [2023-11-06 21:53:49,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:49,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:53:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:53:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:53:49,596 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:49,805 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2023-11-06 21:53:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:53:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 67 [2023-11-06 21:53:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:49,807 INFO L225 Difference]: With dead ends: 99 [2023-11-06 21:53:49,807 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:53:49,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:53:49,810 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 32 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:49,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 334 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:53:49,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:53:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:53:49,811 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) [2023-11-06 21:53:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:53:49,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2023-11-06 21:53:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:53:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 21:53:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:53:49,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:53:49,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:53:49,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:53:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:53:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 21:53:51,522 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 39) no Hoare annotation was computed. [2023-11-06 21:53:51,522 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-11-06 21:53:51,522 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 21:53:51,523 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 21:53:51,523 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2023-11-06 21:53:51,523 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse2 (mod ~var_1_6~0 256))) (let ((.cse1 (not (= |ULTIMATE.start_property_#res#1| 0))) (.cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse3 (= (mod (+ (* 255 ~var_1_9~0) (* 255 ~var_1_8~0) ~var_1_7~0) 256) .cse2))) (or (and .cse0 (<= (mod ~var_1_2~0 256) 0)) (and .cse1 .cse0 (<= (* .cse2 .cse2) 15) .cse3) (let ((.cse5 (+ 256 ~var_1_1~0))) (and (or (< 0 (+ 5 ~var_1_5~0)) (let ((.cse4 (mod (+ (* 255 ~var_1_5~0) 252) 256))) (and (or (< 127 .cse4) (and (= .cse4 ~var_1_1~0) .cse3)) (or (< .cse4 128) (and (= .cse4 .cse5) .cse3))))) .cse1 .cse0 (let ((.cse7 (+ ~var_1_5~0 4))) (or (let ((.cse6 (mod .cse7 256))) (and (or (and (= ~var_1_1~0 .cse6) .cse3) (< 127 .cse6)) (or (and (= .cse5 .cse6) .cse3) (< .cse6 128)))) (< .cse7 0)))))))) [2023-11-06 21:53:51,523 INFO L902 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: true [2023-11-06 21:53:51,524 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 63 74) the Hoare annotation is: false [2023-11-06 21:53:51,524 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2023-11-06 21:53:51,524 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-11-06 21:53:51,524 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 21:53:51,524 INFO L899 garLoopResultBuilder]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2023-11-06 21:53:51,524 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 21:53:51,525 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2023-11-06 21:53:51,525 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 21:53:51,525 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-11-06 21:53:51,525 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 59 62) the Hoare annotation is: (let ((.cse4 (+ ~var_1_5~0 4))) (let ((.cse13 (mod ~var_1_6~0 256)) (.cse5 (mod (+ (* 255 ~var_1_5~0) 252) 256)) (.cse14 (+ 256 ~var_1_1~0)) (.cse1 (mod .cse4 256))) (let ((.cse9 (<= (mod ~var_1_2~0 256) 0)) (.cse2 (= ~var_1_1~0 .cse1)) (.cse3 (= .cse14 .cse1)) (.cse0 (not (= |ULTIMATE.start_property_#res#1| 0))) (.cse8 (+ 5 ~var_1_5~0)) (.cse6 (= .cse5 ~var_1_1~0)) (.cse7 (= .cse5 .cse14)) (.cse10 (* .cse13 .cse13))) (or (and .cse0 (or (and (or (and (<= .cse1 127) .cse2) (and .cse3 (<= 128 .cse1))) (<= 0 .cse4)) (and (or (and (<= .cse5 127) .cse6) (and .cse7 (<= 128 .cse5))) (<= .cse8 0))) .cse9) (and .cse0 (<= .cse10 15) .cse9) (let ((.cse11 (< .cse10 16)) (.cse12 (= (mod (+ (* 255 ~var_1_9~0) (* 255 ~var_1_8~0) ~var_1_7~0) 256) .cse13))) (and (or (and (or (< 127 .cse1) (and (or .cse11 .cse2) .cse12)) (or (and (or .cse11 .cse3) .cse12) (< .cse1 128))) (< .cse4 0)) .cse0 (or (< 0 .cse8) (and (or (< 127 .cse5) (and (or .cse11 .cse6) .cse12)) (or (and (or .cse11 .cse7) .cse12) (< .cse5 128)))))))))) [2023-11-06 21:53:51,526 INFO L902 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2023-11-06 21:53:51,526 INFO L902 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: true [2023-11-06 21:53:51,526 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 21:53:51,526 INFO L895 garLoopResultBuilder]: At program point L66-2(lines 66 72) the Hoare annotation is: (let ((.cse0 (mod ~var_1_6~0 256))) (or (< (mod ~var_1_2~0 256) 1) (< 15 (* .cse0 .cse0)) (= (mod (+ (* 255 ~var_1_9~0) (* 255 ~var_1_8~0) ~var_1_7~0) 256) .cse0))) [2023-11-06 21:53:51,526 INFO L899 garLoopResultBuilder]: For program point L66-3(lines 66 72) no Hoare annotation was computed. [2023-11-06 21:53:51,526 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 30) no Hoare annotation was computed. [2023-11-06 21:53:51,527 INFO L902 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: true [2023-11-06 21:53:51,527 INFO L902 garLoopResultBuilder]: At program point L54-1(line 54) the Hoare annotation is: true [2023-11-06 21:53:51,527 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-06 21:53:51,527 INFO L902 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: true [2023-11-06 21:53:51,527 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 21:53:51,527 INFO L902 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: true [2023-11-06 21:53:51,528 INFO L899 garLoopResultBuilder]: For program point L55(lines 40 56) no Hoare annotation was computed. [2023-11-06 21:53:51,528 INFO L902 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: true [2023-11-06 21:53:51,528 INFO L902 garLoopResultBuilder]: At program point L51-1(line 51) the Hoare annotation is: true [2023-11-06 21:53:51,528 INFO L899 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2023-11-06 21:53:51,528 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 21:53:51,528 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 21:53:51,529 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 21:53:51,529 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 21:53:51,532 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 21:53:51,534 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:53:51,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:53:51 BoogieIcfgContainer [2023-11-06 21:53:51,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:53:51,558 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:53:51,558 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:53:51,558 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:53:51,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:31" (3/4) ... [2023-11-06 21:53:51,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:53:51,565 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 21:53:51,570 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 21:53:51,571 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:53:51,571 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:53:51,571 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:53:51,603 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!((\result == 0)) && (((((((var_1_5 + 4) % 256) <= 127) && (var_1_1 == ((var_1_5 + 4) % 256))) || (((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (128 <= ((var_1_5 + 4) % 256)))) && (0 <= (var_1_5 + 4))) || (((((((255 * var_1_5) + 252) % 256) <= 127) && ((((255 * var_1_5) + 252) % 256) == var_1_1)) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (128 <= (((255 * var_1_5) + 252) % 256)))) && ((5 + var_1_5) <= 0)))) && ((var_1_2 % 256) <= 0)) || ((!((\result == 0)) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && ((var_1_2 % 256) <= 0))) || ((((((127 < ((var_1_5 + 4) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || (var_1_1 == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((256 + var_1_1) == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)) && !((\result == 0))) && ((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == (256 + var_1_1))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || ((((255 * var_1_5) + 252) % 256) < 128)))))) [2023-11-06 21:53:51,604 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((cond == 0)) && ((var_1_2 % 256) <= 0)) || (((!((\result == 0)) && !((cond == 0))) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) || (((((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((255 * var_1_5) + 252) % 256) == var_1_1) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && (((((255 * var_1_5) + 252) % 256) < 128) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))))) && !((\result == 0))) && !((cond == 0))) && (((((var_1_1 == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (127 < ((var_1_5 + 4) % 256))) && ((((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)))) [2023-11-06 21:53:51,625 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!((\result == 0)) && (((((((var_1_5 + 4) % 256) <= 127) && (var_1_1 == ((var_1_5 + 4) % 256))) || (((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (128 <= ((var_1_5 + 4) % 256)))) && (0 <= (var_1_5 + 4))) || (((((((255 * var_1_5) + 252) % 256) <= 127) && ((((255 * var_1_5) + 252) % 256) == var_1_1)) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (128 <= (((255 * var_1_5) + 252) % 256)))) && ((5 + var_1_5) <= 0)))) && ((var_1_2 % 256) <= 0)) || ((!((\result == 0)) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && ((var_1_2 % 256) <= 0))) || ((((((127 < ((var_1_5 + 4) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || (var_1_1 == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((256 + var_1_1) == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)) && !((\result == 0))) && ((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == (256 + var_1_1))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || ((((255 * var_1_5) + 252) % 256) < 128)))))) [2023-11-06 21:53:51,625 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((cond == 0)) && ((var_1_2 % 256) <= 0)) || (((!((\result == 0)) && !((cond == 0))) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) || (((((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((255 * var_1_5) + 252) % 256) == var_1_1) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && (((((255 * var_1_5) + 252) % 256) < 128) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))))) && !((\result == 0))) && !((cond == 0))) && (((((var_1_1 == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (127 < ((var_1_5 + 4) % 256))) && ((((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)))) [2023-11-06 21:53:51,637 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:53:51,638 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:53:51,638 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:53:51,639 INFO L158 Benchmark]: Toolchain (without parser) took 20583.68ms. Allocated memory was 142.6MB in the beginning and 371.2MB in the end (delta: 228.6MB). Free memory was 103.8MB in the beginning and 262.8MB in the end (delta: -159.0MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,639 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 111.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:51,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.78ms. Allocated memory is still 142.6MB. Free memory was 103.4MB in the beginning and 92.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.67ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 90.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,640 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:51,641 INFO L158 Benchmark]: RCFGBuilder took 491.00ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 76.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,641 INFO L158 Benchmark]: TraceAbstraction took 19643.37ms. Allocated memory was 142.6MB in the beginning and 371.2MB in the end (delta: 228.6MB). Free memory was 75.3MB in the beginning and 267.0MB in the end (delta: -191.6MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,641 INFO L158 Benchmark]: Witness Printer took 80.13ms. Allocated memory is still 371.2MB. Free memory was 267.0MB in the beginning and 262.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:53:51,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 111.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.78ms. Allocated memory is still 142.6MB. Free memory was 103.4MB in the beginning and 92.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.67ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 90.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 88.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.00ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 76.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19643.37ms. Allocated memory was 142.6MB in the beginning and 371.2MB in the end (delta: 228.6MB). Free memory was 75.3MB in the beginning and 267.0MB in the end (delta: -191.6MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Witness Printer took 80.13ms. Allocated memory is still 371.2MB. Free memory was 267.0MB in the beginning and 262.8MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. 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: 19]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.5s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 1284 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 934 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 350 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 621 GetRequests, 545 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=4, InterpolantAutomatonStates: 50, 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, 83 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 52 PreInvPairs, 92 NumberOfFragments, 547 HoareAnnotationTreeSize, 52 FomulaSimplifications, 839 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 644 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 594 ConstructedInterpolants, 0 QuantifiedInterpolants, 1834 SizeOfPredicates, 65 NumberOfNonLiveVariables, 814 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1509/1620 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: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!((\result == 0)) && (((((((var_1_5 + 4) % 256) <= 127) && (var_1_1 == ((var_1_5 + 4) % 256))) || (((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (128 <= ((var_1_5 + 4) % 256)))) && (0 <= (var_1_5 + 4))) || (((((((255 * var_1_5) + 252) % 256) <= 127) && ((((255 * var_1_5) + 252) % 256) == var_1_1)) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (128 <= (((255 * var_1_5) + 252) % 256)))) && ((5 + var_1_5) <= 0)))) && ((var_1_2 % 256) <= 0)) || ((!((\result == 0)) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && ((var_1_2 % 256) <= 0))) || ((((((127 < ((var_1_5 + 4) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || (var_1_1 == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((256 + var_1_1) == ((var_1_5 + 4) % 256))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)) && !((\result == 0))) && ((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && ((((((var_1_6 % 256) * (var_1_6 % 256)) < 16) || ((((255 * var_1_5) + 252) % 256) == (256 + var_1_1))) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || ((((255 * var_1_5) + 252) % 256) < 128)))))) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: ((((var_1_2 % 256) < 1) || (15 < ((var_1_6 % 256) * (var_1_6 % 256)))) || (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((!((cond == 0)) && ((var_1_2 % 256) <= 0)) || (((!((\result == 0)) && !((cond == 0))) && (((var_1_6 % 256) * (var_1_6 % 256)) <= 15)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) || (((((0 < (5 + var_1_5)) || (((127 < (((255 * var_1_5) + 252) % 256)) || (((((255 * var_1_5) + 252) % 256) == var_1_1) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))) && (((((255 * var_1_5) + 252) % 256) < 128) || (((((255 * var_1_5) + 252) % 256) == (256 + var_1_1)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256)))))) && !((\result == 0))) && !((cond == 0))) && (((((var_1_1 == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (127 < ((var_1_5 + 4) % 256))) && ((((256 + var_1_1) == ((var_1_5 + 4) % 256)) && (((((255 * var_1_9) + (255 * var_1_8)) + var_1_7) % 256) == (var_1_6 % 256))) || (((var_1_5 + 4) % 256) < 128))) || ((var_1_5 + 4) < 0)))) RESULT: Ultimate proved your program to be correct! [2023-11-06 21:53:51,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6e682c-aa63-4930-afb7-d5ac517927fa/bin/uautomizer-verify-WvqO1wxjHP/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