./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d86a29590e516b56eb6eeb16b945b1182b90f7fb3c3ac4e2538897e0203b1d47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:29,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:29,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:29,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:29,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:29,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:29,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:29,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:29,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:29,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:29,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:29,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:29,898 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:29,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:29,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:29,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:29,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:29,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:29,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:29,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:29,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:29,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:29,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:29,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:29,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:29,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:29,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:29,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:29,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:29,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:29,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:29,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:29,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:29,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:29,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:29,909 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:29,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:29,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:29,909 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:29,909 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_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d86a29590e516b56eb6eeb16b945b1182b90f7fb3c3ac4e2538897e0203b1d47 [2023-11-19 07:47:30,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:30,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:30,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:30,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:30,244 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:30,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i [2023-11-19 07:47:33,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:33,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:33,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i [2023-11-19 07:47:33,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/data/1c1dcc497/a288175165fd47f194eef4cbcb30466b/FLAG26d833732 [2023-11-19 07:47:33,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/data/1c1dcc497/a288175165fd47f194eef4cbcb30466b [2023-11-19 07:47:33,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:33,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:33,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:33,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:33,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:33,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2858d0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33, skipping insertion in model container [2023-11-19 07:47:33,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:33,998 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_b02af721-cf9e-452d-94a8-bd3b01909266/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i[912,925] [2023-11-19 07:47:34,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:34,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:34,077 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_b02af721-cf9e-452d-94a8-bd3b01909266/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i[912,925] [2023-11-19 07:47:34,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:34,140 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:34,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34 WrapperNode [2023-11-19 07:47:34,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:34,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:34,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:34,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:34,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,208 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-19 07:47:34,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:34,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:34,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:34,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:34,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:34,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:34,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:34,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:34,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (1/1) ... [2023-11-19 07:47:34,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:34,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:34,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:34,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:34,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:34,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:34,465 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:34,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:34,850 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:34,859 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:34,865 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:34,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:34 BoogieIcfgContainer [2023-11-19 07:47:34,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:34,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:34,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:34,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:34,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:33" (1/3) ... [2023-11-19 07:47:34,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d65fe7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:34" (2/3) ... [2023-11-19 07:47:34,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d65fe7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:34" (3/3) ... [2023-11-19 07:47:34,878 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-5.i [2023-11-19 07:47:34,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:34,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:34,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:34,985 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bffa9fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:34,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:47:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:47:35,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:35,013 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:35,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 929324851, now seen corresponding path program 1 times [2023-11-19 07:47:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178004522] [2023-11-19 07:47:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178004522] [2023-11-19 07:47:35,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:47:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639675910] [2023-11-19 07:47:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:35,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-19 07:47:35,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639675910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:35,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:35,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59762666] [2023-11-19 07:47:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:35,604 INFO L87 Difference]: Start difference. First operand has 55 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:47:35,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:35,634 INFO L93 Difference]: Finished difference Result 103 states and 178 transitions. [2023-11-19 07:47:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 123 [2023-11-19 07:47:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:35,644 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:47:35,645 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:47:35,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:35,652 INFO L413 NwaCegarLoop]: 75 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, 75 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 [2023-11-19 07:47:35,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:47:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:47:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:47:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2023-11-19 07:47:35,717 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 123 [2023-11-19 07:47:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:35,717 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2023-11-19 07:47:35,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:47:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2023-11-19 07:47:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:47:35,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:35,722 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:35,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:47:35,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:35,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1217728759, now seen corresponding path program 1 times [2023-11-19 07:47:35,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98886813] [2023-11-19 07:47:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58422103] [2023-11-19 07:47:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:36,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:47:36,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:47:40,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:44,512 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_12~0 256)) (.cse2 (mod c_~var_1_8~0 256))) (let ((.cse21 (mod c_~var_1_15~0 256)) (.cse10 (= .cse4 .cse2)) (.cse11 (= c_~var_1_19~0 .cse2)) (.cse9 (= c_~var_1_1~0 0)) (.cse12 (= .cse4 c_~var_1_20~0)) (.cse13 (= (+ 4 c_~var_1_18~0) 0)) (.cse14 (= (mod c_~var_1_9~0 256) 0))) (let ((.cse15 (and .cse11 .cse9 .cse12 .cse13 .cse14)) (.cse0 (not .cse10)) (.cse6 (not .cse11)) (.cse7 (not .cse12)) (.cse8 (not .cse13)) (.cse1 (and .cse11 .cse12 .cse13)) (.cse3 (mod 2 .cse21)) (.cse16 (mod c_~var_1_13~0 65536)) (.cse17 (* .cse21 65535)) (.cse19 (mod c_~var_1_16~0 65536)) (.cse18 (mod c_~var_1_17~0 65536))) (and (or (let ((.cse5 (= .cse16 (mod (+ .cse17 c_~var_1_17~0 .cse2) 65536)))) (and (or .cse0 (and (or .cse1 (and (forall ((v_z_33 Int)) (or (< (* (div .cse2 v_z_33) .cse3) .cse4) (< v_z_33 0) (< 255 v_z_33))) .cse5 (forall ((v_z_34 Int)) (or (< 255 v_z_34) (< v_z_34 0) (< .cse4 (+ (* (div .cse2 v_z_34) .cse3) 1)))))) (or .cse6 .cse7 .cse8 (and (or .cse9 (forall ((v_z_36 Int)) (or (< v_z_36 0) (< (* (div .cse2 v_z_36) .cse3) .cse4) (< 255 v_z_36)))) (or .cse5 (and .cse9 (forall ((v_z_35 Int)) (or (< (* (div .cse2 v_z_35) .cse3) .cse4) (< 255 v_z_35) (< v_z_35 0))))) (or .cse9 (forall ((v_z_37 Int)) (or (< 255 v_z_37) (< v_z_37 0) (< .cse4 (+ (* (div .cse2 v_z_37) .cse3) 1))))))))) (or .cse10 (and (or .cse5 (and .cse11 .cse9 .cse12 (forall ((v_z_28 Int)) (or (< v_z_28 0) (< (* .cse3 (div .cse2 v_z_28)) .cse4) (< 255 v_z_28))) .cse13 .cse14)) (or .cse15 (forall ((v_z_29 Int)) (or (< (* .cse3 (div .cse2 v_z_29)) .cse4) (< 255 v_z_29) (< v_z_29 0)))) (or (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< .cse4 (+ (* .cse3 (div .cse2 v_z_30)) 1)))) .cse15))))) (< .cse18 .cse19)) (or (let ((.cse20 (= .cse16 (mod (+ c_~var_1_16~0 .cse17 .cse2) 65536)))) (and (or .cse10 (and (or (and .cse11 .cse9 .cse12 .cse13 .cse14 (forall ((v_z_40 Int)) (or (< v_z_40 0) (< (* (div .cse2 v_z_40) .cse3) .cse4) (< 255 v_z_40)))) .cse20) (or (forall ((v_z_38 Int)) (or (< 255 v_z_38) (< v_z_38 0) (< (* .cse3 (div .cse2 v_z_38)) .cse4))) .cse15) (or (forall ((v_z_39 Int)) (or (< v_z_39 0) (< .cse4 (+ (* .cse3 (div .cse2 v_z_39)) 1)) (< 255 v_z_39))) .cse15))) (or .cse0 (and (or (and (or (and .cse9 (forall ((v_z_41 Int)) (or (< v_z_41 0) (< (* (div .cse2 v_z_41) .cse3) .cse4) (< 255 v_z_41)))) .cse20) (or (forall ((v_z_42 Int)) (or (< 255 v_z_42) (< v_z_42 0) (< (* (div .cse2 v_z_42) .cse3) .cse4))) .cse9) (or .cse9 (forall ((v_z_43 Int)) (or (< .cse4 (+ (* .cse3 (div .cse2 v_z_43)) 1)) (< v_z_43 0) (< 255 v_z_43))))) .cse6 .cse7 .cse8) (or .cse1 (and (forall ((v_z_45 Int)) (or (< v_z_45 0) (< 255 v_z_45) (< (* .cse3 (div .cse2 v_z_45)) .cse4))) .cse20 (forall ((v_z_46 Int)) (or (< 255 v_z_46) (< v_z_46 0) (< .cse4 (+ (* (div .cse2 v_z_46) .cse3) 1)))))))))) (< .cse19 (+ .cse18 1))))))) is different from false [2023-11-19 07:47:46,102 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse14 (mod c_~var_1_15~0 256)) (.cse2 (mod c_~var_1_8~0 256)) (.cse5 (= c_~var_1_1~0 0)) (.cse6 (= (mod c_~var_1_9~0 256) 0))) (let ((.cse4 (and .cse5 .cse6)) (.cse0 (< 254 .cse2)) (.cse7 (+ 1 .cse2)) (.cse1 (mod 2 .cse14)) (.cse3 (< .cse2 1)) (.cse9 (mod c_~var_1_13~0 65536)) (.cse10 (* .cse14 65535)) (.cse12 (mod c_~var_1_17~0 65536)) (.cse11 (mod c_~var_1_16~0 65536))) (and (or (let ((.cse8 (= .cse9 (mod (+ c_~var_1_16~0 .cse10 .cse2) 65536)))) (and (or (and (or .cse0 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< 255 v_z_39) (< 254 (* .cse1 (div .cse2 v_z_39)))))) (or .cse3 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< .cse2 (+ 2 (* .cse1 (div .cse2 v_z_39)))) (< 255 v_z_39))))) .cse4) (or .cse5 (forall ((v_z_43 Int)) (or (< .cse2 (+ (* .cse1 (div .cse2 v_z_43)) 1)) (< v_z_43 0) (< 255 v_z_43)))) (or (and (or .cse3 (forall ((v_z_40 Int)) (or (< v_z_40 0) (< 255 v_z_40) (< (* (div .cse2 v_z_40) .cse1) 0)))) .cse6 (or .cse0 (forall ((v_z_40 Int)) (or (< (* (div .cse2 v_z_40) .cse1) .cse7) (< v_z_40 0))))) .cse8) (or .cse5 (forall ((v_z_42 Int)) (or (< 255 v_z_42) (< v_z_42 0) (< (* (div .cse2 v_z_42) .cse1) .cse2)))) (or .cse4 (and (or .cse0 (forall ((v_z_38 Int)) (or (< v_z_38 0) (< (* .cse1 (div .cse2 v_z_38)) .cse7)))) (or (forall ((v_z_38 Int)) (or (< 255 v_z_38) (< v_z_38 0) (< (* .cse1 (div .cse2 v_z_38)) 0))) .cse3))) (or (and (forall ((v_z_41 Int)) (or (< v_z_41 0) (< (* (div .cse2 v_z_41) .cse1) .cse2) (< 255 v_z_41))) .cse5) .cse8))) (< .cse11 (+ .cse12 1))) (or (let ((.cse13 (= .cse9 (mod (+ .cse10 c_~var_1_17~0 .cse2) 65536)))) (and (or .cse13 (forall ((v_z_35 Int)) (or (< (* (div .cse2 v_z_35) .cse1) .cse2) (< 255 v_z_35) (< v_z_35 0)))) (or (forall ((v_z_36 Int)) (or (< v_z_36 0) (< (* (div .cse2 v_z_36) .cse1) .cse2) (< 255 v_z_36))) .cse5) (or .cse5 (forall ((v_z_37 Int)) (or (< 255 v_z_37) (< .cse2 (+ (* (div .cse2 v_z_37) .cse1) 1)) (< v_z_37 0)))) (or .cse4 (and (or .cse0 (forall ((v_z_29 Int)) (or (< (* .cse1 (div .cse2 v_z_29)) .cse7) (< v_z_29 0)))) (or (forall ((v_z_29 Int)) (or (< (* .cse1 (div .cse2 v_z_29)) 0) (< 255 v_z_29) (< v_z_29 0))) .cse3))) (or .cse4 (and (or .cse0 (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< 254 (* .cse1 (div .cse2 v_z_30)))))) (or (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< .cse2 (+ 2 (* .cse1 (div .cse2 v_z_30)))))) .cse3))) (or (and (or .cse0 (forall ((v_z_28 Int)) (or (< v_z_28 0) (< (* .cse1 (div .cse2 v_z_28)) .cse7)))) .cse5 (or (forall ((v_z_28 Int)) (or (< (* .cse1 (div .cse2 v_z_28)) 0) (< v_z_28 0) (< 255 v_z_28))) .cse3) .cse6) .cse13))) (< .cse12 .cse11))))) is different from false [2023-11-19 07:47:47,084 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse12 (mod c_~var_1_15~0 256)) (.cse3 (mod c_~var_1_8~0 256))) (let ((.cse4 (+ 1 .cse3)) (.cse1 (< 254 .cse3)) (.cse5 (< .cse3 1)) (.cse2 (mod 2 .cse12)) (.cse6 (= (mod c_~var_1_9~0 256) 0)) (.cse7 (mod c_~var_1_13~0 65536)) (.cse8 (* .cse12 65535)) (.cse10 (mod c_~var_1_16~0 65536)) (.cse9 (mod c_~var_1_17~0 65536))) (and (or (let ((.cse0 (= .cse7 (mod (+ .cse8 c_~var_1_17~0 .cse3) 65536)))) (and (or .cse0 (and (or .cse1 (forall ((v_z_28 Int)) (or (< v_z_28 0) (< (* .cse2 (div .cse3 v_z_28)) .cse4)))) (or (forall ((v_z_28 Int)) (or (< (* .cse2 (div .cse3 v_z_28)) 0) (< v_z_28 0) (< 255 v_z_28))) .cse5) .cse6)) (or .cse0 (forall ((v_z_35 Int)) (or (< (* (div .cse3 v_z_35) .cse2) .cse3) (< 255 v_z_35) (< v_z_35 0)))) (or .cse6 (and (or .cse1 (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< 254 (* .cse2 (div .cse3 v_z_30)))))) (or (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< .cse3 (+ 2 (* .cse2 (div .cse3 v_z_30)))))) .cse5))) (or .cse6 (and (or .cse1 (forall ((v_z_29 Int)) (or (< (* .cse2 (div .cse3 v_z_29)) .cse4) (< v_z_29 0)))) (or (forall ((v_z_29 Int)) (or (< (* .cse2 (div .cse3 v_z_29)) 0) (< 255 v_z_29) (< v_z_29 0))) .cse5))))) (< .cse9 .cse10)) (or (let ((.cse11 (= .cse7 (mod (+ c_~var_1_16~0 .cse8 .cse3) 65536)))) (and (or (forall ((v_z_41 Int)) (or (< v_z_41 0) (< (* (div .cse3 v_z_41) .cse2) .cse3) (< 255 v_z_41))) .cse11) (or (and (or .cse1 (forall ((v_z_38 Int)) (or (< v_z_38 0) (< (* .cse2 (div .cse3 v_z_38)) .cse4)))) (or (forall ((v_z_38 Int)) (or (< 255 v_z_38) (< v_z_38 0) (< (* .cse2 (div .cse3 v_z_38)) 0))) .cse5)) .cse6) (or (and (or .cse5 (forall ((v_z_40 Int)) (or (< v_z_40 0) (< 255 v_z_40) (< (* (div .cse3 v_z_40) .cse2) 0)))) .cse6 (or .cse1 (forall ((v_z_40 Int)) (or (< (* (div .cse3 v_z_40) .cse2) .cse4) (< v_z_40 0))))) .cse11) (or (and (or .cse1 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< 255 v_z_39) (< 254 (* .cse2 (div .cse3 v_z_39)))))) (or .cse5 (forall ((v_z_39 Int)) (or (< v_z_39 0) (< .cse3 (+ 2 (* .cse2 (div .cse3 v_z_39)))) (< 255 v_z_39))))) .cse6))) (< .cse10 (+ .cse9 1)))))) is different from false [2023-11-19 07:47:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:47:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98886813] [2023-11-19 07:47:48,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58422103] [2023-11-19 07:47:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58422103] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:48,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-11-19 07:47:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834935275] [2023-11-19 07:47:48,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=106, Unknown=3, NotChecked=66, Total=210 [2023-11-19 07:47:48,485 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:56,791 INFO L93 Difference]: Finished difference Result 130 states and 188 transitions. [2023-11-19 07:47:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:47:56,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2023-11-19 07:47:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:56,796 INFO L225 Difference]: With dead ends: 130 [2023-11-19 07:47:56,796 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 07:47:56,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=86, Invalid=326, Unknown=20, NotChecked=120, Total=552 [2023-11-19 07:47:56,798 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 73 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:56,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 690 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 4 Unknown, 324 Unchecked, 0.2s Time] [2023-11-19 07:47:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 07:47:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2023-11-19 07:47:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:47:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2023-11-19 07:47:56,868 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 123 [2023-11-19 07:47:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,869 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2023-11-19 07:47:56,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2023-11-19 07:47:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:47:56,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,874 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:47:57,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:57,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1274987061, now seen corresponding path program 1 times [2023-11-19 07:47:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120721149] [2023-11-19 07:47:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:57,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:57,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473996195] [2023-11-19 07:47:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:57,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:57,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:47:57,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120721149] [2023-11-19 07:47:57,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:57,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473996195] [2023-11-19 07:47:57,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473996195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:57,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235865780] [2023-11-19 07:47:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:57,285 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:57,308 INFO L93 Difference]: Finished difference Result 149 states and 211 transitions. [2023-11-19 07:47:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2023-11-19 07:47:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:57,313 INFO L225 Difference]: With dead ends: 149 [2023-11-19 07:47:57,314 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:47:57,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:57,317 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:57,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 142 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:47:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:47:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 50 states have internal predecessors, (56), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:47:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2023-11-19 07:47:57,334 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 123 [2023-11-19 07:47:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:57,335 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2023-11-19 07:47:57,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2023-11-19 07:47:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:47:57,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:57,342 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:57,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:57,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash 408382133, now seen corresponding path program 1 times [2023-11-19 07:47:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743775777] [2023-11-19 07:47:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:57,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765865749] [2023-11-19 07:47:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:57,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:57,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:57,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:47:58,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743775777] [2023-11-19 07:47:58,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:58,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765865749] [2023-11-19 07:47:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765865749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:58,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:47:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33015458] [2023-11-19 07:47:58,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:58,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:58,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:58,694 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:59,297 INFO L93 Difference]: Finished difference Result 144 states and 198 transitions. [2023-11-19 07:47:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:59,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 123 [2023-11-19 07:47:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:59,301 INFO L225 Difference]: With dead ends: 144 [2023-11-19 07:47:59,301 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:47:59,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:59,303 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 93 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:59,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 648 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:47:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:47:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 70. [2023-11-19 07:47:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:47:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2023-11-19 07:47:59,327 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 123 [2023-11-19 07:47:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,328 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2023-11-19 07:47:59,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:47:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2023-11-19 07:47:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:47:59,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,330 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:59,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 453110410, now seen corresponding path program 1 times [2023-11-19 07:47:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375494274] [2023-11-19 07:47:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:59,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584983914] [2023-11-19 07:47:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:59,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:59,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:47:59,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:48:01,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:48:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375494274] [2023-11-19 07:48:07,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584983914] [2023-11-19 07:48:07,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584983914] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:07,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:48:07,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-19 07:48:07,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535752926] [2023-11-19 07:48:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:07,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=179, Unknown=8, NotChecked=0, Total=240 [2023-11-19 07:48:07,606 INFO L87 Difference]: Start difference. First operand 70 states and 97 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:48:09,372 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~var_1_12~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (let ((.cse0 (= .cse2 .cse1))) (and (or .cse0 (and (forall ((v_z_116 Int) (v_z_106 Int)) (or (< 255 v_z_116) (< v_z_106 0) (< 255 v_z_106) (< (* (div .cse1 v_z_106) (mod 2 v_z_116)) .cse2) (< v_z_116 0))) (forall ((v_z_115 Int) (v_z_105 Int)) (or (< 255 v_z_105) (< v_z_105 0) (< .cse2 (+ (* (mod 2 v_z_115) (div .cse1 v_z_105)) 1)) (< 255 v_z_115) (< v_z_115 0))))) (or .cse0 (and (forall ((v_z_103 Int) (v_z_118 Int)) (or (< 255 v_z_118) (< 255 v_z_103) (< .cse2 (+ (* (mod 2 v_z_118) (div .cse1 v_z_103)) 1)) (< v_z_118 0) (< v_z_103 0))) (forall ((v_z_104 Int) (v_z_117 Int)) (or (< v_z_117 0) (< (* (mod 2 v_z_117) (div .cse1 v_z_104)) .cse2) (< 255 v_z_104) (< 255 v_z_117) (< v_z_104 0))))) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0))))) is different from false [2023-11-19 07:48:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:17,203 INFO L93 Difference]: Finished difference Result 131 states and 182 transitions. [2023-11-19 07:48:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:48:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2023-11-19 07:48:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:17,206 INFO L225 Difference]: With dead ends: 131 [2023-11-19 07:48:17,207 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:48:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=95, Invalid=310, Unknown=19, NotChecked=38, Total=462 [2023-11-19 07:48:17,209 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 78 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 51 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:17,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 462 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 88 Invalid, 29 Unknown, 7 Unchecked, 2.1s Time] [2023-11-19 07:48:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:48:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2023-11-19 07:48:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.103448275862069) internal successors, (64), 60 states have internal predecessors, (64), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 07:48:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2023-11-19 07:48:17,256 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 124 [2023-11-19 07:48:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:17,257 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2023-11-19 07:48:17,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:48:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2023-11-19 07:48:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:48:17,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:17,260 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:17,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:17,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:17,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -356236216, now seen corresponding path program 1 times [2023-11-19 07:48:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:17,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975477359] [2023-11-19 07:48:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:17,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:17,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845339180] [2023-11-19 07:48:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:17,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:17,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:17,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:48:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:17,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:48:17,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:48:18,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975477359] [2023-11-19 07:48:18,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845339180] [2023-11-19 07:48:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845339180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:48:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259866072] [2023-11-19 07:48:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:18,126 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:48:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:18,650 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2023-11-19 07:48:18,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:48:18,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2023-11-19 07:48:18,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:18,652 INFO L225 Difference]: With dead ends: 140 [2023-11-19 07:48:18,652 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:48:18,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:48:18,654 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 102 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:18,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 648 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:48:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:48:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:48:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:48:18,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2023-11-19 07:48:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:18,657 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:48:18,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:48:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:48:18,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:48:18,660 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:48:18,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:18,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:18,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:48:23,834 INFO L899 garLoopResultBuilder]: For program point L97(lines 97 100) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-19 07:48:23,835 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-11-19 07:48:23,835 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-11-19 07:48:23,835 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point L44-1(lines 41 65) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 105 116) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L902 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2023-11-19 07:48:23,836 INFO L902 garLoopResultBuilder]: At program point L94-1(line 94) the Hoare annotation is: true [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-19 07:48:23,836 INFO L899 garLoopResultBuilder]: For program point property_returnLabel#1(lines 101 104) no Hoare annotation was computed. [2023-11-19 07:48:23,837 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 53) no Hoare annotation was computed. [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: true [2023-11-19 07:48:23,837 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 65) no Hoare annotation was computed. [2023-11-19 07:48:23,837 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:48:23,837 INFO L899 garLoopResultBuilder]: For program point L95(lines 66 96) no Hoare annotation was computed. [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L91(line 91) the Hoare annotation is: true [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L91-1(line 91) the Hoare annotation is: true [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: true [2023-11-19 07:48:23,837 INFO L902 garLoopResultBuilder]: At program point L87-1(line 87) the Hoare annotation is: true [2023-11-19 07:48:23,838 INFO L902 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: true [2023-11-19 07:48:23,838 INFO L902 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: true [2023-11-19 07:48:23,838 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2023-11-19 07:48:23,838 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-19 07:48:23,838 INFO L895 garLoopResultBuilder]: At program point L108-2(lines 108 114) the Hoare annotation is: (let ((.cse5 (mod ~var_1_12~0 256)) (.cse3 (mod ~var_1_8~0 256)) (.cse12 (mod ~var_1_15~0 256))) (let ((.cse2 (= (+ ~var_1_18~0 4) 0)) (.cse4 (mod 2 .cse12)) (.cse11 (= ~var_1_8~0 ~var_1_12~0)) (.cse8 (= ~var_1_1~0 0)) (.cse9 (= .cse3 ~var_1_19~0)) (.cse10 (= ~var_1_20~0 .cse5))) (or (let ((.cse1 (mod ~var_1_16~0 65536)) (.cse0 (mod ~var_1_17~0 65536)) (.cse6 (* .cse12 65535)) (.cse7 (mod ~var_1_13~0 65536))) (and (or (< .cse0 .cse1) (and .cse2 (or (forall ((v_z_95 Int)) (or (< 255 v_z_95) (< v_z_95 0) (< (* (div .cse3 v_z_95) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_17~0) 65536) .cse7)) .cse8 .cse9 .cse10)) (or (< .cse1 (+ .cse0 1)) (and .cse2 .cse8 .cse9 .cse10 (or (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse3 v_z_108) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_16~0) 65536) .cse7)))) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse11)) (< (mod ~var_1_9~0 256) 1) (and .cse2 (<= (+ (* (div .cse3 (mod ~var_1_14~0 256)) .cse4) 1) .cse5) (<= 1 |ULTIMATE.start_property_#res#1|) .cse11 .cse8 .cse9 .cse10)))) [2023-11-19 07:48:23,838 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:48:23,838 INFO L899 garLoopResultBuilder]: For program point L108-3(lines 108 114) no Hoare annotation was computed. [2023-11-19 07:48:23,839 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse5 (mod ~var_1_12~0 256)) (.cse3 (mod ~var_1_8~0 256)) (.cse12 (mod ~var_1_15~0 256))) (let ((.cse2 (= (+ ~var_1_18~0 4) 0)) (.cse4 (mod 2 .cse12)) (.cse11 (= ~var_1_8~0 ~var_1_12~0)) (.cse8 (= ~var_1_1~0 0)) (.cse9 (= .cse3 ~var_1_19~0)) (.cse10 (= ~var_1_20~0 .cse5))) (or (let ((.cse1 (mod ~var_1_16~0 65536)) (.cse0 (mod ~var_1_17~0 65536)) (.cse6 (* .cse12 65535)) (.cse7 (mod ~var_1_13~0 65536))) (and (or (< .cse0 .cse1) (and .cse2 (or (forall ((v_z_95 Int)) (or (< 255 v_z_95) (< v_z_95 0) (< (* (div .cse3 v_z_95) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_17~0) 65536) .cse7)) .cse8 .cse9 .cse10)) (or (< .cse1 (+ .cse0 1)) (and .cse2 .cse8 .cse9 .cse10 (or (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse3 v_z_108) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_16~0) 65536) .cse7)))) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse11)) (< (mod ~var_1_9~0 256) 1) (and .cse2 (<= (+ (* (div .cse3 (mod ~var_1_14~0 256)) .cse4) 1) .cse5) (<= 1 |ULTIMATE.start_property_#res#1|) .cse11 .cse8 .cse9 .cse10)))) [2023-11-19 07:48:23,839 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (let ((.cse5 (mod ~var_1_12~0 256)) (.cse3 (mod ~var_1_8~0 256)) (.cse12 (mod ~var_1_15~0 256))) (let ((.cse2 (= (+ ~var_1_18~0 4) 0)) (.cse4 (mod 2 .cse12)) (.cse11 (= ~var_1_8~0 ~var_1_12~0)) (.cse8 (= ~var_1_1~0 0)) (.cse9 (= .cse3 ~var_1_19~0)) (.cse10 (= ~var_1_20~0 .cse5))) (or (let ((.cse1 (mod ~var_1_16~0 65536)) (.cse0 (mod ~var_1_17~0 65536)) (.cse6 (* .cse12 65535)) (.cse7 (mod ~var_1_13~0 65536))) (and (or (< .cse0 .cse1) (and .cse2 (or (forall ((v_z_95 Int)) (or (< 255 v_z_95) (< v_z_95 0) (< (* (div .cse3 v_z_95) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_17~0) 65536) .cse7)) .cse8 .cse9 .cse10)) (or (< .cse1 (+ .cse0 1)) (and .cse2 .cse8 .cse9 .cse10 (or (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse3 v_z_108) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_16~0) 65536) .cse7)))) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse11)) (< (mod ~var_1_9~0 256) 1) (and .cse2 (<= (+ (* (div .cse3 (mod ~var_1_14~0 256)) .cse4) 1) .cse5) (<= 1 |ULTIMATE.start_property_#res#1|) .cse11 .cse8 .cse9 .cse10)))) [2023-11-19 07:48:23,839 INFO L899 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2023-11-19 07:48:23,839 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2023-11-19 07:48:23,840 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 59 61) no Hoare annotation was computed. [2023-11-19 07:48:23,840 INFO L902 garLoopResultBuilder]: At program point L88(line 88) the Hoare annotation is: true [2023-11-19 07:48:23,840 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 55 57) no Hoare annotation was computed. [2023-11-19 07:48:23,840 INFO L902 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: true [2023-11-19 07:48:23,840 INFO L902 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: true [2023-11-19 07:48:23,840 INFO L902 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: true [2023-11-19 07:48:23,840 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-19 07:48:23,840 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2023-11-19 07:48:23,841 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse5 (mod ~var_1_12~0 256)) (.cse3 (mod ~var_1_8~0 256)) (.cse12 (mod ~var_1_15~0 256))) (let ((.cse2 (= (+ ~var_1_18~0 4) 0)) (.cse4 (mod 2 .cse12)) (.cse11 (= ~var_1_8~0 ~var_1_12~0)) (.cse8 (= ~var_1_1~0 0)) (.cse9 (= .cse3 ~var_1_19~0)) (.cse10 (= ~var_1_20~0 .cse5))) (or (let ((.cse1 (mod ~var_1_16~0 65536)) (.cse0 (mod ~var_1_17~0 65536)) (.cse6 (* .cse12 65535)) (.cse7 (mod ~var_1_13~0 65536))) (and (or (< .cse0 .cse1) (and .cse2 (or (forall ((v_z_95 Int)) (or (< 255 v_z_95) (< v_z_95 0) (< (* (div .cse3 v_z_95) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_17~0) 65536) .cse7)) .cse8 .cse9 .cse10)) (or (< .cse1 (+ .cse0 1)) (and .cse2 .cse8 .cse9 .cse10 (or (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse3 v_z_108) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_16~0) 65536) .cse7)))) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse11)) (< (mod ~var_1_9~0 256) 1) (and .cse2 (<= (+ (* (div .cse3 (mod ~var_1_14~0 256)) .cse4) 1) .cse5) (<= 1 |ULTIMATE.start_property_#res#1|) .cse11 .cse8 .cse9 .cse10)))) [2023-11-19 07:48:23,841 INFO L895 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: (let ((.cse5 (mod ~var_1_12~0 256)) (.cse3 (mod ~var_1_8~0 256)) (.cse12 (mod ~var_1_15~0 256))) (let ((.cse2 (= (+ ~var_1_18~0 4) 0)) (.cse4 (mod 2 .cse12)) (.cse11 (= ~var_1_8~0 ~var_1_12~0)) (.cse8 (= ~var_1_1~0 0)) (.cse9 (= .cse3 ~var_1_19~0)) (.cse10 (= ~var_1_20~0 .cse5))) (or (let ((.cse1 (mod ~var_1_16~0 65536)) (.cse0 (mod ~var_1_17~0 65536)) (.cse6 (* .cse12 65535)) (.cse7 (mod ~var_1_13~0 65536))) (and (or (< .cse0 .cse1) (and .cse2 (or (forall ((v_z_95 Int)) (or (< 255 v_z_95) (< v_z_95 0) (< (* (div .cse3 v_z_95) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_17~0) 65536) .cse7)) .cse8 .cse9 .cse10)) (or (< .cse1 (+ .cse0 1)) (and .cse2 .cse8 .cse9 .cse10 (or (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse3 v_z_108) .cse4) .cse5))) (= (mod (+ .cse6 .cse3 ~var_1_16~0) 65536) .cse7)))) (not (= |ULTIMATE.start_property_#res#1| 0)) .cse11)) (< (mod ~var_1_9~0 256) 1) (and .cse2 (<= (+ (* (div .cse3 (mod ~var_1_14~0 256)) .cse4) 1) .cse5) (<= 1 |ULTIMATE.start_property_#res#1|) .cse11 .cse8 .cse9 .cse10)))) [2023-11-19 07:48:23,841 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-19 07:48:23,841 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 07:48:23,841 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-19 07:48:23,841 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-19 07:48:23,844 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 07:48:23,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:48:23,864 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_z_95 : int :: (255 < v_z_95 || v_z_95 < 0) || ~var_1_8~0 % 256 / v_z_95 * (2 % (~var_1_15~0 % 256)) < ~var_1_12~0 % 256) could not be translated [2023-11-19 07:48:23,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_z_108 : int :: (v_z_108 < 0 || 255 < v_z_108) || ~var_1_8~0 % 256 / v_z_108 * (2 % (~var_1_15~0 % 256)) < ~var_1_12~0 % 256) could not be translated [2023-11-19 07:48:23,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:48:23 BoogieIcfgContainer [2023-11-19 07:48:23,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:48:23,871 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:23,871 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:23,871 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:23,872 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:34" (3/4) ... [2023-11-19 07:48:23,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:48:23,879 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 07:48:23,886 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-19 07:48:23,887 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:48:23,887 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:48:23,888 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:48:23,915 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_17 % 65536) < (var_1_16 % 65536)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))))) && !((\result == 0))) && (var_1_8 == var_1_12)) || ((var_1_9 % 256) < 1)) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && (1 <= \result)) && (var_1_8 == var_1_12)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) [2023-11-19 07:48:23,940 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_17 % 65536) < (var_1_16 % 65536)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))))) && !((\result == 0))) && (var_1_8 == var_1_12)) || ((var_1_9 % 256) < 1)) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && (1 <= \result)) && (var_1_8 == var_1_12)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) [2023-11-19 07:48:23,987 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:48:23,988 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:48:23,988 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:23,989 INFO L158 Benchmark]: Toolchain (without parser) took 50233.65ms. Allocated memory was 153.1MB in the beginning and 408.9MB in the end (delta: 255.9MB). Free memory was 110.1MB in the beginning and 173.4MB in the end (delta: -63.3MB). Peak memory consumption was 194.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,989 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:23,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.67ms. Allocated memory is still 153.1MB. Free memory was 110.1MB in the beginning and 97.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.14ms. Allocated memory is still 153.1MB. Free memory was 97.1MB in the beginning and 93.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,991 INFO L158 Benchmark]: Boogie Preprocessor took 44.18ms. Allocated memory is still 153.1MB. Free memory was 93.6MB in the beginning and 91.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:23,991 INFO L158 Benchmark]: RCFGBuilder took 615.20ms. Allocated memory is still 153.1MB. Free memory was 91.9MB in the beginning and 119.5MB in the end (delta: -27.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,991 INFO L158 Benchmark]: TraceAbstraction took 48999.10ms. Allocated memory was 153.1MB in the beginning and 408.9MB in the end (delta: 255.9MB). Free memory was 119.0MB in the beginning and 179.7MB in the end (delta: -60.7MB). Peak memory consumption was 242.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,992 INFO L158 Benchmark]: Witness Printer took 117.17ms. Allocated memory is still 408.9MB. Free memory was 179.7MB in the beginning and 173.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:48:23,994 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.67ms. Allocated memory is still 153.1MB. Free memory was 110.1MB in the beginning and 97.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.14ms. Allocated memory is still 153.1MB. Free memory was 97.1MB in the beginning and 93.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.18ms. Allocated memory is still 153.1MB. Free memory was 93.6MB in the beginning and 91.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 615.20ms. Allocated memory is still 153.1MB. Free memory was 91.9MB in the beginning and 119.5MB in the end (delta: -27.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 48999.10ms. Allocated memory was 153.1MB in the beginning and 408.9MB in the end (delta: 255.9MB). Free memory was 119.0MB in the beginning and 179.7MB in the end (delta: -60.7MB). Peak memory consumption was 242.9MB. Max. memory is 16.1GB. * Witness Printer took 117.17ms. Allocated memory is still 408.9MB. Free memory was 179.7MB in the beginning and 173.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_z_95 : int :: (255 < v_z_95 || v_z_95 < 0) || ~var_1_8~0 % 256 / v_z_95 * (2 % (~var_1_15~0 % 256)) < ~var_1_12~0 % 256) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_z_108 : int :: (v_z_108 < 0 || 255 < v_z_108) || ~var_1_8~0 % 256 / v_z_108 * (2 % (~var_1_15~0 % 256)) < ~var_1_12~0 % 256) could not be translated * 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, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.9s, OverallIterations: 6, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 2665 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 331 IncrementalHoareTripleChecker+Unchecked, 1948 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 381 IncrementalHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 717 mSDtfsCounter, 381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1008 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 159 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 113 PreInvPairs, 164 NumberOfFragments, 987 HoareAnnotationTreeSize, 113 FomulaSimplifications, 876 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 3642 FormulaSimplificationTreeSizeReductionInter, 4.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 863 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 979 ConstructedInterpolants, 9 QuantifiedInterpolants, 5750 SizeOfPredicates, 74 NumberOfNonLiveVariables, 1792 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 5990/6080 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: 108]: Loop Invariant Derived loop invariant: ((((((((var_1_17 % 65536) < (var_1_16 % 65536)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((var_1_18 + 4) == 0) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))))) && !((\result == 0))) && (var_1_8 == var_1_12)) || ((var_1_9 % 256) < 1)) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && (1 <= \result)) && (var_1_8 == var_1_12)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:48:24,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02af721-cf9e-452d-94a8-bd3b01909266/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE