./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/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_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d86a29590e516b56eb6eeb16b945b1182b90f7fb3c3ac4e2538897e0203b1d47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:41,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:41,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:11:41,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:41,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:41,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:41,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:41,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:41,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:41,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:41,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:41,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:41,746 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:41,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:41,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:11:41,749 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:41,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:41,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:41,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:41,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:11:41,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:41,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:11:41,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:41,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:11:41,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:41,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:41,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:41,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:41,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:41,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:41,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:41,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:11:41,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:11:41,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:11:41,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:41,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:11:41,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:41,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:41,786 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:41,787 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_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d86a29590e516b56eb6eeb16b945b1182b90f7fb3c3ac4e2538897e0203b1d47 [2023-11-06 22:11:42,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:42,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:42,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:42,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:42,201 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:42,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i [2023-11-06 22:11:45,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:45,589 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:45,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i [2023-11-06 22:11:45,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/data/9691ccb15/f2a4482e6a1247229f8808e5eb807e77/FLAG1ad61c66b [2023-11-06 22:11:45,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/data/9691ccb15/f2a4482e6a1247229f8808e5eb807e77 [2023-11-06 22:11:45,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:45,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:45,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:45,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:45,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:45,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:45" (1/1) ... [2023-11-06 22:11:45,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec83c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:45, skipping insertion in model container [2023-11-06 22:11:45,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:45" (1/1) ... [2023-11-06 22:11:45,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:45,881 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_c70a0459-82bc-4493-be2b-194651e8b621/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i[912,925] [2023-11-06 22:11:45,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:45,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:46,008 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_c70a0459-82bc-4493-be2b-194651e8b621/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-5.i[912,925] [2023-11-06 22:11:46,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:46,079 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:46,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46 WrapperNode [2023-11-06 22:11:46,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:46,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:46,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:46,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:46,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,181 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-06 22:11:46,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:46,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:46,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:46,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:46,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,212 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:46,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:46,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:46,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:46,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (1/1) ... [2023-11-06 22:11:46,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:46,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:46,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:46,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:11:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:11:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:11:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:46,446 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:46,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:46,834 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:46,848 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:46,851 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:11:46,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:46 BoogieIcfgContainer [2023-11-06 22:11:46,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:46,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:46,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:46,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:46,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:45" (1/3) ... [2023-11-06 22:11:46,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d72773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:46, skipping insertion in model container [2023-11-06 22:11:46,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:46" (2/3) ... [2023-11-06 22:11:46,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d72773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:46, skipping insertion in model container [2023-11-06 22:11:46,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:46" (3/3) ... [2023-11-06 22:11:46,871 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-5.i [2023-11-06 22:11:46,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:46,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:11:46,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:46,967 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37ec261a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:46,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:11:46,972 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) [2023-11-06 22:11:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:11:46,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:11:46,997 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] [2023-11-06 22:11:46,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:11:47,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash 929324851, now seen corresponding path program 1 times [2023-11-06 22:11:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536159305] [2023-11-06 22:11:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536159305] [2023-11-06 22:11:47,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:11:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897051723] [2023-11-06 22:11:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:47,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:47,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:11:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:47,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:11:47,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-11-06 22:11:47,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:47,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897051723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:47,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:47,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537671493] [2023-11-06 22:11:47,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:11:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:11:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:11:47,503 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) [2023-11-06 22:11:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:11:47,532 INFO L93 Difference]: Finished difference Result 103 states and 178 transitions. [2023-11-06 22:11:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:11:47,537 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 [2023-11-06 22:11:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:11:47,545 INFO L225 Difference]: With dead ends: 103 [2023-11-06 22:11:47,545 INFO L226 Difference]: Without dead ends: 51 [2023-11-06 22:11:47,549 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 [2023-11-06 22:11:47,553 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 [2023-11-06 22:11:47,554 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] [2023-11-06 22:11:47,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-06 22:11:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-06 22:11:47,604 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) [2023-11-06 22:11:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2023-11-06 22:11:47,614 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 123 [2023-11-06 22:11:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:11:47,615 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2023-11-06 22:11:47,616 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) [2023-11-06 22:11:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2023-11-06 22:11:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:11:47,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:11:47,622 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] [2023-11-06 22:11:47,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:47,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:11:47,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:11:47,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1217728759, now seen corresponding path program 1 times [2023-11-06 22:11:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:47,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669512488] [2023-11-06 22:11:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:47,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:11:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855514800] [2023-11-06 22:11:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:47,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:47,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:47,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:47,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:11:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:48,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:11:48,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-06 22:11:51,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:12:15,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669512488] [2023-11-06 22:12:15,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:15,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855514800] [2023-11-06 22:12:15,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855514800] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:15,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:12:15,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-11-06 22:12:15,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086056889] [2023-11-06 22:12:15,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:15,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-06 22:12:15,529 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) [2023-11-06 22:12:28,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:36,996 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse25 (mod c_~var_1_15~0 256)) (.cse12 (mod c_~var_1_12~0 256)) (.cse2 (mod c_~var_1_8~0 256))) (let ((.cse17 (= .cse12 .cse2)) (.cse18 (= c_~var_1_19~0 .cse2)) (.cse19 (= .cse12 c_~var_1_20~0)) (.cse20 (= (+ 4 c_~var_1_18~0) 0)) (.cse24 (mod c_~var_1_17~0 65536)) (.cse23 (mod c_~var_1_16~0 65536)) (.cse26 (mod c_~var_1_13~0 65536)) (.cse27 (* .cse25 65535)) (.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)) (.cse3 (< .cse2 1)) (.cse13 (= .cse26 (mod (+ .cse27 c_~var_1_17~0 .cse2) 65536))) (.cse22 (< .cse24 .cse23)) (.cse21 (and .cse18 .cse5 .cse19 .cse20 .cse6)) (.cse10 (not .cse17)) (.cse14 (not .cse18)) (.cse15 (not .cse19)) (.cse16 (not .cse20)) (.cse11 (and .cse18 .cse19 .cse20)) (.cse8 (= .cse26 (mod (+ c_~var_1_16~0 .cse27 .cse2) 65536))) (.cse1 (mod 2 .cse25)) (.cse9 (< .cse23 (+ .cse24 1)))) (and (or (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)) .cse9) (or (and (or .cse10 (and (or .cse11 (and (forall ((v_z_33 Int)) (or (< (* (div .cse2 v_z_33) .cse1) .cse12) (< v_z_33 0) (< 255 v_z_33))) .cse13 (forall ((v_z_34 Int)) (or (< 255 v_z_34) (< v_z_34 0) (< .cse12 (+ (* (div .cse2 v_z_34) .cse1) 1)))))) (or .cse14 .cse15 .cse16 (and (or .cse5 (forall ((v_z_36 Int)) (or (< v_z_36 0) (< (* (div .cse2 v_z_36) .cse1) .cse12) (< 255 v_z_36)))) (or .cse13 (and .cse5 (forall ((v_z_35 Int)) (or (< (* (div .cse2 v_z_35) .cse1) .cse12) (< 255 v_z_35) (< v_z_35 0))))) (or .cse5 (forall ((v_z_37 Int)) (or (< 255 v_z_37) (< v_z_37 0) (< .cse12 (+ (* (div .cse2 v_z_37) .cse1) 1))))))))) (or .cse17 (and (or .cse13 (and .cse18 .cse5 .cse19 (forall ((v_z_28 Int)) (or (< v_z_28 0) (< (* .cse1 (div .cse2 v_z_28)) .cse12) (< 255 v_z_28))) .cse20 .cse6)) (or .cse21 (forall ((v_z_29 Int)) (or (< (* .cse1 (div .cse2 v_z_29)) .cse12) (< 255 v_z_29) (< v_z_29 0)))) (or (forall ((v_z_30 Int)) (or (< 255 v_z_30) (< v_z_30 0) (< .cse12 (+ (* .cse1 (div .cse2 v_z_30)) 1)))) .cse21)))) .cse22) (or (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)) .cse22) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or (and (or .cse17 (and (or (and .cse18 .cse5 .cse19 .cse20 .cse6 (forall ((v_z_40 Int)) (or (< v_z_40 0) (< (* (div .cse2 v_z_40) .cse1) .cse12) (< 255 v_z_40)))) .cse8) (or (forall ((v_z_38 Int)) (or (< 255 v_z_38) (< v_z_38 0) (< (* .cse1 (div .cse2 v_z_38)) .cse12))) .cse21) (or (forall ((v_z_39 Int)) (or (< v_z_39 0) (< .cse12 (+ (* .cse1 (div .cse2 v_z_39)) 1)) (< 255 v_z_39))) .cse21))) (or .cse10 (and (or (and (or (and .cse5 (forall ((v_z_41 Int)) (or (< v_z_41 0) (< (* (div .cse2 v_z_41) .cse1) .cse12) (< 255 v_z_41)))) .cse8) (or (forall ((v_z_42 Int)) (or (< 255 v_z_42) (< v_z_42 0) (< (* (div .cse2 v_z_42) .cse1) .cse12))) .cse5) (or .cse5 (forall ((v_z_43 Int)) (or (< .cse12 (+ (* .cse1 (div .cse2 v_z_43)) 1)) (< v_z_43 0) (< 255 v_z_43))))) .cse14 .cse15 .cse16) (or .cse11 (and (forall ((v_z_45 Int)) (or (< v_z_45 0) (< 255 v_z_45) (< (* .cse1 (div .cse2 v_z_45)) .cse12))) .cse8 (forall ((v_z_46 Int)) (or (< 255 v_z_46) (< v_z_46 0) (< .cse12 (+ (* (div .cse2 v_z_46) .cse1) 1))))))))) .cse9) (not (= |c_ULTIMATE.start_property_#res#1| 0)))))) is different from false [2023-11-06 22:12:38,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:42,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:44,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:47,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:50,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:52,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:55,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:12:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:55,804 INFO L93 Difference]: Finished difference Result 101 states and 134 transitions. [2023-11-06 22:12:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:55,806 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 [2023-11-06 22:12:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:55,809 INFO L225 Difference]: With dead ends: 101 [2023-11-06 22:12:55,809 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 22:12:55,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=71, Invalid=273, Unknown=2, NotChecked=34, Total=380 [2023-11-06 22:12:55,811 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 58 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:55,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 422 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 6 Unknown, 7 Unchecked, 25.0s Time] [2023-11-06 22:12:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 22:12:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2023-11-06 22:12:55,848 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) [2023-11-06 22:12:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2023-11-06 22:12:55,851 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 123 [2023-11-06 22:12:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:55,852 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2023-11-06 22:12:55,853 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) [2023-11-06 22:12:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2023-11-06 22:12:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:12:55,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:55,856 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] [2023-11-06 22:12:55,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:56,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:56,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:56,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1274987061, now seen corresponding path program 1 times [2023-11-06 22:12:56,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:56,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45078662] [2023-11-06 22:12:56,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:56,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:56,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:56,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506124170] [2023-11-06 22:12:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:56,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:56,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:56,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:12:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:12:56,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:12:56,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:56,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:56,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45078662] [2023-11-06 22:12:56,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:12:56,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506124170] [2023-11-06 22:12:56,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506124170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:56,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:56,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357366180] [2023-11-06 22:12:56,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:56,227 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) [2023-11-06 22:12:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:56,290 INFO L93 Difference]: Finished difference Result 149 states and 211 transitions. [2023-11-06 22:12:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:56,291 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 [2023-11-06 22:12:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:56,295 INFO L225 Difference]: With dead ends: 149 [2023-11-06 22:12:56,295 INFO L226 Difference]: Without dead ends: 76 [2023-11-06 22:12:56,297 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 [2023-11-06 22:12:56,298 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 [2023-11-06 22:12:56,299 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] [2023-11-06 22:12:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-06 22:12:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-06 22:12:56,334 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) [2023-11-06 22:12:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2023-11-06 22:12:56,336 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 123 [2023-11-06 22:12:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:56,337 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2023-11-06 22:12:56,337 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) [2023-11-06 22:12:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2023-11-06 22:12:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:12:56,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:56,340 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] [2023-11-06 22:12:56,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:56,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:56,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:56,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 408382133, now seen corresponding path program 1 times [2023-11-06 22:12:56,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:56,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328063455] [2023-11-06 22:12:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:56,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:56,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:12:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882676282] [2023-11-06 22:12:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:56,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:56,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:56,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:12:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:12:56,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-06 22:12:59,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:13:03,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:03,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328063455] [2023-11-06 22:13:03,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:13:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882676282] [2023-11-06 22:13:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882676282] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:03,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-11-06 22:13:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569648555] [2023-11-06 22:13:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:03,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:03,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:13:03,502 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) [2023-11-06 22:13:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:09,812 INFO L93 Difference]: Finished difference Result 144 states and 198 transitions. [2023-11-06 22:13:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:13:09,813 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 [2023-11-06 22:13:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:09,817 INFO L225 Difference]: With dead ends: 144 [2023-11-06 22:13:09,817 INFO L226 Difference]: Without dead ends: 142 [2023-11-06 22:13:09,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 231 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:13:09,826 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 79 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:09,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 730 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 22:13:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-06 22:13:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 70. [2023-11-06 22:13:09,879 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) [2023-11-06 22:13:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2023-11-06 22:13:09,881 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 123 [2023-11-06 22:13:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:09,882 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2023-11-06 22:13:09,882 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) [2023-11-06 22:13:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2023-11-06 22:13:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:13:09,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:09,885 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] [2023-11-06 22:13:09,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:10,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:10,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:10,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash 453110410, now seen corresponding path program 1 times [2023-11-06 22:13:10,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:10,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425079389] [2023-11-06 22:13:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:10,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:10,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:13:10,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998094449] [2023-11-06 22:13:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:10,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:10,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:10,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:13:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:10,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:13:10,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-06 22:13:11,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:27,038 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (mod c_~var_1_12~0 256)) (.cse2 (mod c_~var_1_8~0 256)) (.cse8 (mod c_~var_1_15~0 256))) (let ((.cse0 (mod c_~var_1_13~0 65536)) (.cse1 (* .cse8 65535)) (.cse3 (= .cse5 .cse2)) (.cse4 (mod 2 .cse8)) (.cse7 (mod c_~var_1_17~0 65536)) (.cse6 (mod c_~var_1_16~0 65536))) (and (or (and (or (= .cse0 (mod (+ c_~var_1_16~0 .cse1 .cse2) 65536)) (and .cse3 (forall ((v_z_128 Int)) (or (< v_z_128 0) (< (* .cse4 (div .cse2 v_z_128)) .cse5) (< 255 v_z_128))))) (or .cse3 (and (forall ((v_z_118 Int)) (or (< 255 v_z_118) (< (* (div .cse2 v_z_118) .cse4) .cse5) (< v_z_118 0))) (forall ((v_z_119 Int)) (or (< .cse5 (+ (* .cse4 (div .cse2 v_z_119)) 1)) (< v_z_119 0) (< 255 v_z_119)))))) (< .cse6 (+ .cse7 1))) (or (and (or (= .cse0 (mod (+ .cse1 c_~var_1_17~0 .cse2) 65536)) (and .cse3 (forall ((v_z_116 Int)) (or (< 255 v_z_116) (< v_z_116 0) (< (* (div .cse2 v_z_116) .cse4) .cse5))))) (or .cse3 (and (forall ((v_z_106 Int)) (or (< v_z_106 0) (< 255 v_z_106) (< (* .cse4 (div .cse2 v_z_106)) .cse5))) (forall ((v_z_107 Int)) (or (< v_z_107 0) (< .cse5 (+ (* (div .cse2 v_z_107) .cse4) 1)) (< 255 v_z_107)))))) (< .cse7 .cse6))))) is different from false [2023-11-06 22:13:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:13:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425079389] [2023-11-06 22:13:29,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:13:29,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998094449] [2023-11-06 22:13:29,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998094449] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:29,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:29,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-06 22:13:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930205070] [2023-11-06 22:13:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2023-11-06 22:13:29,995 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) [2023-11-06 22:13:36,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:38,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:40,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:46,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:13:48,610 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_12~0 256)) (.cse4 (mod c_~var_1_8~0 256))) (let ((.cse19 (mod c_~var_1_15~0 256)) (.cse6 (= .cse3 .cse4)) (.cse13 (= (+ 4 c_~var_1_18~0) 0)) (.cse12 (= .cse3 c_~var_1_20~0)) (.cse11 (= c_~var_1_19~0 .cse4))) (let ((.cse7 (= c_~var_1_1~0 0)) (.cse8 (not .cse11)) (.cse9 (not .cse12)) (.cse10 (not .cse13)) (.cse1 (and .cse11 .cse12 .cse13)) (.cse2 (not .cse6)) (.cse5 (mod 2 .cse19)) (.cse14 (mod c_~var_1_13~0 65536)) (.cse15 (* .cse19 65535)) (.cse17 (mod c_~var_1_17~0 65536)) (.cse16 (mod c_~var_1_16~0 65536))) (and (or (let ((.cse0 (= .cse14 (mod (+ c_~var_1_16~0 .cse15 .cse4) 65536)))) (and (or (not .cse0) (and (or .cse1 (and (or .cse2 (and (forall ((v_z_123 Int)) (or (< .cse3 (+ (* (div .cse4 v_z_123) .cse5) 1)) (< 255 v_z_123) (< v_z_123 0))) (forall ((v_z_124 Int)) (or (< (* (div .cse4 v_z_124) .cse5) .cse3) (< 255 v_z_124) (< v_z_124 0))))) (or .cse6 (and (forall ((v_z_126 Int)) (or (< v_z_126 0) (< 255 v_z_126) (< (* (div .cse4 v_z_126) .cse5) .cse3))) (forall ((v_z_125 Int)) (or (< .cse3 (+ (* (div .cse4 v_z_125) .cse5) 1)) (< v_z_125 0) (< 255 v_z_125))))))) (or (and (or (and (or .cse7 (forall ((v_z_120 Int)) (or (< 255 v_z_120) (< (* .cse5 (div .cse4 v_z_120)) .cse3) (< v_z_120 0)))) (or .cse7 (forall ((v_z_121 Int)) (or (< .cse3 (+ (* .cse5 (div .cse4 v_z_121)) 1)) (< 255 v_z_121) (< v_z_121 0))))) .cse2) (or .cse6 (and (forall ((v_z_118 Int)) (or (< 255 v_z_118) (< (* (div .cse4 v_z_118) .cse5) .cse3) (< v_z_118 0))) (forall ((v_z_119 Int)) (or (< .cse3 (+ (* .cse5 (div .cse4 v_z_119)) 1)) (< v_z_119 0) (< 255 v_z_119)))))) .cse8 .cse9 .cse10))) (or (and .cse6 .cse11 .cse7 .cse12 .cse13 (forall ((v_z_128 Int)) (or (< v_z_128 0) (< (* .cse5 (div .cse4 v_z_128)) .cse3) (< 255 v_z_128)))) .cse0))) (< .cse16 (+ .cse17 1))) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or (let ((.cse18 (= .cse14 (mod (+ .cse15 c_~var_1_17~0 .cse4) 65536)))) (and (or .cse18 (and .cse6 (forall ((v_z_116 Int)) (or (< 255 v_z_116) (< v_z_116 0) (< (* (div .cse4 v_z_116) .cse5) .cse3))) .cse11 .cse7 .cse12 .cse13)) (or (not .cse18) (and (or (and (or .cse2 (and (or .cse7 (forall ((v_z_109 Int)) (or (< v_z_109 0) (< 255 v_z_109) (< .cse3 (+ (* (div .cse4 v_z_109) .cse5) 1))))) (or .cse7 (forall ((v_z_108 Int)) (or (< v_z_108 0) (< 255 v_z_108) (< (* (div .cse4 v_z_108) .cse5) .cse3)))))) (or .cse6 (and (forall ((v_z_106 Int)) (or (< v_z_106 0) (< 255 v_z_106) (< (* .cse5 (div .cse4 v_z_106)) .cse3))) (forall ((v_z_107 Int)) (or (< v_z_107 0) (< .cse3 (+ (* (div .cse4 v_z_107) .cse5) 1)) (< 255 v_z_107)))))) .cse8 .cse9 .cse10) (or .cse1 (and (or .cse2 (and (forall ((v_z_111 Int)) (or (< v_z_111 0) (< 255 v_z_111) (< .cse3 (+ (* .cse5 (div .cse4 v_z_111)) 1)))) (forall ((v_z_112 Int)) (or (< 255 v_z_112) (< v_z_112 0) (< (* (div .cse4 v_z_112) .cse5) .cse3))))) (or .cse6 (and (forall ((v_z_113 Int)) (or (< v_z_113 0) (< .cse3 (+ (* .cse5 (div .cse4 v_z_113)) 1)) (< 255 v_z_113))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (< (* .cse5 (div .cse4 v_z_114)) .cse3))))))))))) (< .cse17 .cse16)) (not (= |c_ULTIMATE.start_property_#res#1| 0)))))) is different from false [2023-11-06 22:13:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:50,987 INFO L93 Difference]: Finished difference Result 97 states and 131 transitions. [2023-11-06 22:13:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:50,988 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 [2023-11-06 22:13:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:50,990 INFO L225 Difference]: With dead ends: 97 [2023-11-06 22:13:50,990 INFO L226 Difference]: Without dead ends: 95 [2023-11-06 22:13:50,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=68, Invalid=244, Unknown=2, NotChecked=66, Total=380 [2023-11-06 22:13:50,991 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 40 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:50,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 545 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 4 Unknown, 65 Unchecked, 13.1s Time] [2023-11-06 22:13:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-06 22:13:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2023-11-06 22:13:51,029 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) [2023-11-06 22:13:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2023-11-06 22:13:51,031 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 124 [2023-11-06 22:13:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:51,032 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2023-11-06 22:13:51,032 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) [2023-11-06 22:13:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2023-11-06 22:13:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:13:51,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:51,035 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] [2023-11-06 22:13:51,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:51,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:51,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash -356236216, now seen corresponding path program 1 times [2023-11-06 22:13:51,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:51,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787888761] [2023-11-06 22:13:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:51,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:13:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326416869] [2023-11-06 22:13:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:51,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:51,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:51,270 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:51,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:13:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:51,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:13:51,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-06 22:13:53,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:58,785 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~var_1_12~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (or (= .cse0 .cse1) (forall ((v_z_148 Int) (v_z_150 Int)) (or (< v_z_150 0) (< 255 v_z_148) (< 255 v_z_150) (< v_z_148 0) (< .cse0 (+ (* (div .cse1 v_z_148) (mod 2 v_z_150)) 1)))))) is different from false [2023-11-06 22:13:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:13:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:58,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787888761] [2023-11-06 22:13:58,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:13:58,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326416869] [2023-11-06 22:13:58,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326416869] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:58,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:58,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-06 22:13:58,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549453500] [2023-11-06 22:13:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=167, Unknown=1, NotChecked=26, Total=240 [2023-11-06 22:13:58,865 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) [2023-11-06 22:14:03,457 WARN L839 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod c_~var_1_12~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (or (= .cse0 .cse1) (forall ((v_z_148 Int) (v_z_150 Int)) (or (< v_z_150 0) (< 255 v_z_148) (< 255 v_z_150) (< v_z_148 0) (< .cse0 (+ (* (div .cse1 v_z_148) (mod 2 v_z_150)) 1)))))) (not (= |c_ULTIMATE.start_property_#res#1| 0))) is different from false [2023-11-06 22:14:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:03,702 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2023-11-06 22:14:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:14:03,703 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 [2023-11-06 22:14:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:03,705 INFO L225 Difference]: With dead ends: 157 [2023-11-06 22:14:03,705 INFO L226 Difference]: Without dead ends: 155 [2023-11-06 22:14:03,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2023-11-06 22:14:03,707 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 57 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:03,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 623 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 89 Invalid, 0 Unknown, 85 Unchecked, 1.6s Time] [2023-11-06 22:14:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-06 22:14:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 101. [2023-11-06 22:14:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 67 states have internal predecessors, (72), 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) [2023-11-06 22:14:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 136 transitions. [2023-11-06 22:14:03,765 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 136 transitions. Word has length 124 [2023-11-06 22:14:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 136 transitions. [2023-11-06 22:14:03,766 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) [2023-11-06 22:14:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 136 transitions. [2023-11-06 22:14:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-06 22:14:03,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:03,770 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, 1] [2023-11-06 22:14:03,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:03,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:03,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:03,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash 978655434, now seen corresponding path program 1 times [2023-11-06 22:14:03,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:03,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946452154] [2023-11-06 22:14:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:03,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:04,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:14:04,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644760505] [2023-11-06 22:14:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:04,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:04,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:04,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:14:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:04,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:14:04,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-06 22:14:06,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:14:20,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946452154] [2023-11-06 22:14:20,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:14:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644760505] [2023-11-06 22:14:20,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644760505] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:20,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:14:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-06 22:14:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185427667] [2023-11-06 22:14:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=183, Unknown=4, NotChecked=0, Total=240 [2023-11-06 22:14:20,008 INFO L87 Difference]: Start difference. First operand 101 states and 136 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2023-11-06 22:14:22,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:14:24,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:14:26,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:14:30,553 WARN L839 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod c_~var_1_12~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (or (= .cse0 .cse1) (forall ((v_z_168 Int) (v_z_170 Int)) (or (< v_z_170 0) (< .cse0 (+ (* (div .cse1 v_z_168) (mod 2 v_z_170)) 1)) (< 255 v_z_170) (< 255 v_z_168) (< v_z_168 0))))) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) is different from false [2023-11-06 22:14:32,897 WARN L839 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod c_~var_1_12~0 256)) (.cse1 (mod c_~var_1_8~0 256))) (or (= .cse0 .cse1) (forall ((v_z_168 Int) (v_z_170 Int)) (or (< v_z_170 0) (< .cse0 (+ (* (div .cse1 v_z_168) (mod 2 v_z_170)) 1)) (< 255 v_z_170) (< 255 v_z_168) (< v_z_168 0))))) (not (= |c_ULTIMATE.start_property_#res#1| 0))) is different from false [2023-11-06 22:14:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:33,114 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2023-11-06 22:14:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:14:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 125 [2023-11-06 22:14:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:33,116 INFO L225 Difference]: With dead ends: 136 [2023-11-06 22:14:33,116 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:14:33,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=73, Invalid=235, Unknown=6, NotChecked=66, Total=380 [2023-11-06 22:14:33,118 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 64 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:33,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 547 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 96 Invalid, 2 Unknown, 20 Unchecked, 7.9s Time] [2023-11-06 22:14:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:14:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:14:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:14:33,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2023-11-06 22:14:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:33,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:14:33,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2023-11-06 22:14:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:14:33,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:14:33,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:14:33,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:14:33,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:15:17,449 WARN L293 SmtUtils]: Spent 43.70s on a formula simplification. DAG size of input: 540 DAG size of output: 66 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-06 22:15:17,461 INFO L899 garLoopResultBuilder]: For program point L97(lines 97 100) no Hoare annotation was computed. [2023-11-06 22:15:17,461 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2023-11-06 22:15:17,461 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-11-06 22:15:17,461 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 22:15:17,462 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 22:15:17,462 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-06 22:15:17,462 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2023-11-06 22:15:17,462 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-11-06 22:15:17,462 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-11-06 22:15:17,462 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2023-11-06 22:15:17,463 INFO L899 garLoopResultBuilder]: For program point L44-1(lines 41 65) no Hoare annotation was computed. [2023-11-06 22:15:17,463 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 105 116) the Hoare annotation is: false [2023-11-06 22:15:17,463 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-06 22:15:17,463 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:15:17,463 INFO L902 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2023-11-06 22:15:17,463 INFO L902 garLoopResultBuilder]: At program point L94-1(line 94) the Hoare annotation is: true [2023-11-06 22:15:17,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:15:17,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 22:15:17,464 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-06 22:15:17,464 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 101 104) the Hoare annotation is: (let ((.cse15 (mod ~var_1_15~0 256))) (let ((.cse14 (mod ~var_1_12~0 256)) (.cse16 (* .cse15 65535)) (.cse13 (mod ~var_1_8~0 256)) (.cse17 (mod ~var_1_13~0 65536)) (.cse19 (mod ~var_1_16~0 65536)) (.cse18 (mod ~var_1_17~0 65536))) (let ((.cse8 (< .cse19 (+ .cse18 1))) (.cse9 (= (mod (+ .cse16 .cse13 ~var_1_16~0) 65536) .cse17)) (.cse0 (< .cse18 .cse19)) (.cse6 (= (mod (+ .cse16 .cse13 ~var_1_17~0) 65536) .cse17)) (.cse10 (mod ~var_1_9~0 256)) (.cse1 (= (+ ~var_1_18~0 4) 0)) (.cse12 (<= (+ (* (div .cse13 (mod ~var_1_14~0 256)) (mod 2 .cse15)) 1) .cse14)) (.cse7 (not (= |ULTIMATE.start_property_#res#1| 0))) (.cse3 (= ~var_1_1~0 0)) (.cse4 (= .cse13 ~var_1_19~0)) (.cse5 (= ~var_1_20~0 .cse14)) (.cse11 (= .cse13 .cse14))) (or (let ((.cse2 (= .cse10 0))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6)) .cse7 (or .cse8 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse9)))) (and .cse7 (or .cse8 (and .cse1 .cse3 .cse4 .cse5 .cse9 .cse11)) (or .cse0 (and .cse1 .cse3 .cse4 .cse5 .cse11 .cse6))) (and .cse1 .cse12 (<= .cse10 0) .cse7 .cse3 .cse4 .cse5) (and .cse1 .cse12 .cse7 .cse3 .cse4 .cse5 .cse11))))) [2023-11-06 22:15:17,464 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 53) no Hoare annotation was computed. [2023-11-06 22:15:17,465 INFO L902 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2023-11-06 22:15:17,465 INFO L902 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: true [2023-11-06 22:15:17,465 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 65) no Hoare annotation was computed. [2023-11-06 22:15:17,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:15:17,465 INFO L899 garLoopResultBuilder]: For program point L95(lines 66 96) no Hoare annotation was computed. [2023-11-06 22:15:17,465 INFO L902 garLoopResultBuilder]: At program point L91(line 91) the Hoare annotation is: true [2023-11-06 22:15:17,466 INFO L902 garLoopResultBuilder]: At program point L91-1(line 91) the Hoare annotation is: true [2023-11-06 22:15:17,466 INFO L902 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: true [2023-11-06 22:15:17,466 INFO L902 garLoopResultBuilder]: At program point L87-1(line 87) the Hoare annotation is: true [2023-11-06 22:15:17,466 INFO L902 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: true [2023-11-06 22:15:17,467 INFO L902 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: true [2023-11-06 22:15:17,467 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2023-11-06 22:15:17,468 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-06 22:15:17,468 INFO L902 garLoopResultBuilder]: At program point L108-2(lines 108 114) the Hoare annotation is: true [2023-11-06 22:15:17,468 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:15:17,468 INFO L899 garLoopResultBuilder]: For program point L108-3(lines 108 114) no Hoare annotation was computed. [2023-11-06 22:15:17,468 INFO L902 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: true [2023-11-06 22:15:17,468 INFO L902 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: true [2023-11-06 22:15:17,468 INFO L899 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2023-11-06 22:15:17,469 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2023-11-06 22:15:17,469 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 59 61) no Hoare annotation was computed. [2023-11-06 22:15:17,469 INFO L902 garLoopResultBuilder]: At program point L88(line 88) the Hoare annotation is: true [2023-11-06 22:15:17,469 INFO L899 garLoopResultBuilder]: For program point L55-1(lines 55 57) no Hoare annotation was computed. [2023-11-06 22:15:17,469 INFO L902 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: true [2023-11-06 22:15:17,469 INFO L902 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: true [2023-11-06 22:15:17,470 INFO L902 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: true [2023-11-06 22:15:17,470 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-06 22:15:17,470 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2023-11-06 22:15:17,470 INFO L902 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: true [2023-11-06 22:15:17,470 INFO L902 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: true [2023-11-06 22:15:17,470 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 22:15:17,471 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 22:15:17,471 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 22:15:17,471 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 22:15:17,474 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:17,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:15:17,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:15:17 BoogieIcfgContainer [2023-11-06 22:15:17,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:15:17,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:15:17,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:15:17,519 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:15:17,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:46" (3/4) ... [2023-11-06 22:15:17,521 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:15:17,526 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 22:15:17,535 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-06 22:15:17,536 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:15:17,536 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:15:17,537 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:15:17,573 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_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))) && !((\result == 0))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((((var_1_18 + 4) == 0) && ((var_1_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))))) || ((!((\result == 0)) && (((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))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))) && ((var_1_8 % 256) == (var_1_12 % 256))))) && (((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_8 % 256) == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && ((var_1_9 % 256) <= 0)) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((var_1_8 % 256) == (var_1_12 % 256)))) [2023-11-06 22:15:17,610 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_17 % 65536) < (var_1_16 % 65536)) || (((((((var_1_18 + 4) == 0) && ((var_1_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))) && !((\result == 0))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((((var_1_18 + 4) == 0) && ((var_1_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))))) || ((!((\result == 0)) && (((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))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))) && ((var_1_8 % 256) == (var_1_12 % 256))))) && (((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_8 % 256) == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && ((var_1_9 % 256) <= 0)) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((var_1_8 % 256) == (var_1_12 % 256)))) [2023-11-06 22:15:17,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:15:17,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:15:17,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:15:17,630 INFO L158 Benchmark]: Toolchain (without parser) took 212007.66ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 121.8MB in the beginning and 228.2MB in the end (delta: -106.5MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,630 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 188.7MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:15:17,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.40ms. Allocated memory is still 188.7MB. Free memory was 121.6MB in the beginning and 108.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.45ms. Allocated memory is still 188.7MB. Free memory was 108.6MB in the beginning and 158.4MB in the end (delta: -49.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,632 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 188.7MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,633 INFO L158 Benchmark]: RCFGBuilder took 628.46ms. Allocated memory is still 188.7MB. Free memory was 156.3MB in the beginning and 145.8MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,634 INFO L158 Benchmark]: TraceAbstraction took 210658.72ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 145.6MB in the beginning and 233.5MB in the end (delta: -87.9MB). Peak memory consumption was 189.8MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,634 INFO L158 Benchmark]: Witness Printer took 111.26ms. Allocated memory is still 327.2MB. Free memory was 233.5MB in the beginning and 228.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:15:17,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 188.7MB. Free memory is still 161.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.40ms. Allocated memory is still 188.7MB. Free memory was 121.6MB in the beginning and 108.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.45ms. Allocated memory is still 188.7MB. Free memory was 108.6MB in the beginning and 158.4MB in the end (delta: -49.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 188.7MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 628.46ms. Allocated memory is still 188.7MB. Free memory was 156.3MB in the beginning and 145.8MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 210658.72ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 145.6MB in the beginning and 233.5MB in the end (delta: -87.9MB). Peak memory consumption was 189.8MB. Max. memory is 16.1GB. * Witness Printer took 111.26ms. Allocated memory is still 327.2MB. Free memory was 233.5MB in the beginning and 228.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 210.5s, OverallIterations: 7, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 85.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 44.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 50.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 300 mSDsluCounter, 3084 SdHoareTripleChecker+Invalid, 50.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 177 IncrementalHoareTripleChecker+Unchecked, 2338 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 586 IncrementalHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 746 mSDtfsCounter, 586 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1502 GetRequests, 1404 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 76.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=6, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 150 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 112 PreInvPairs, 167 NumberOfFragments, 334 HoareAnnotationTreeSize, 112 FomulaSimplifications, 8523 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 25 FomulaSimplificationsInter, 4311 FormulaSimplificationTreeSizeReductionInter, 43.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 77.5s InterpolantComputationTime, 988 NumberOfCodeBlocks, 988 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1472 ConstructedInterpolants, 11 QuantifiedInterpolants, 6977 SizeOfPredicates, 113 NumberOfNonLiveVariables, 2092 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 8895/9120 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: 105]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: ((((((((var_1_17 % 65536) < (var_1_16 % 65536)) || (((((((var_1_18 + 4) == 0) && ((var_1_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))) && !((\result == 0))) && (((var_1_16 % 65536) < ((var_1_17 % 65536) + 1)) || (((((((var_1_18 + 4) == 0) && ((var_1_9 % 256) == 0)) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))))) || ((!((\result == 0)) && (((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))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_16) % 65536) == (var_1_13 % 65536))) && ((var_1_8 % 256) == (var_1_12 % 256))))) && (((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_8 % 256) == (var_1_12 % 256))) && ((((((var_1_15 % 256) * 65535) + (var_1_8 % 256)) + var_1_17) % 65536) == (var_1_13 % 65536)))))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && ((var_1_9 % 256) <= 0)) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256)))) || ((((((((var_1_18 + 4) == 0) && (((((var_1_8 % 256) / (var_1_14 % 256)) * (2 % (var_1_15 % 256))) + 1) <= (var_1_12 % 256))) && !((\result == 0))) && (var_1_1 == 0)) && ((var_1_8 % 256) == var_1_19)) && (var_1_20 == (var_1_12 % 256))) && ((var_1_8 % 256) == (var_1_12 % 256)))) - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !((cond == 0)) RESULT: Ultimate proved your program to be correct! [2023-11-06 22:15:17,903 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-06 22:15:17,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70a0459-82bc-4493-be2b-194651e8b621/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE