./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.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_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/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_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/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_f53330ca-d386-4873-aebe-d879900669a0/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 857eb6400730c27462335624c39a58effd99f93ee6f972a1d8a0651a358303ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:34,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:34,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:57:34,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:34,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:34,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:34,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:34,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:34,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:34,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:34,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:34,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:34,966 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:34,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:34,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:34,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:34,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:34,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:34,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:34,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:34,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:34,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:34,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:34,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:34,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:34,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:34,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:34,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:34,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:34,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:34,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:34,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:34,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:34,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:34,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:34,979 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:34,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:34,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:34,980 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:34,980 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_f53330ca-d386-4873-aebe-d879900669a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 857eb6400730c27462335624c39a58effd99f93ee6f972a1d8a0651a358303ab [2023-11-06 22:57:35,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:35,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:35,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:35,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:35,309 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:35,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.i [2023-11-06 22:57:38,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:38,697 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:38,697 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.i [2023-11-06 22:57:38,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/data/05a81e310/ff99b2daba4843c7916d0dd93c29fa17/FLAGc3a5f583b [2023-11-06 22:57:38,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/data/05a81e310/ff99b2daba4843c7916d0dd93c29fa17 [2023-11-06 22:57:38,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:38,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:38,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:38,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:38,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:38,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:38" (1/1) ... [2023-11-06 22:57:38,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aaf82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:38, skipping insertion in model container [2023-11-06 22:57:38,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:38" (1/1) ... [2023-11-06 22:57:38,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:38,930 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_f53330ca-d386-4873-aebe-d879900669a0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.i[913,926] [2023-11-06 22:57:38,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:38,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:38,999 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_f53330ca-d386-4873-aebe-d879900669a0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-89.i[913,926] [2023-11-06 22:57:39,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:39,038 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:39,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39 WrapperNode [2023-11-06 22:57:39,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:39,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:39,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:39,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:39,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,113 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-11-06 22:57:39,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:39,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:39,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:39,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:39,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:39,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:39,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:39,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:39,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:39,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:39,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:39,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:57:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:57:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:39,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:39,355 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:39,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:39,768 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:39,775 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:39,776 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:57:39,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:39 BoogieIcfgContainer [2023-11-06 22:57:39,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:39,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:39,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:39,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:39,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:38" (1/3) ... [2023-11-06 22:57:39,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab89d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:39, skipping insertion in model container [2023-11-06 22:57:39,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (2/3) ... [2023-11-06 22:57:39,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab89d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:39, skipping insertion in model container [2023-11-06 22:57:39,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:39" (3/3) ... [2023-11-06 22:57:39,789 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-89.i [2023-11-06 22:57:39,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:39,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:57:39,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:39,872 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;@10ceb073, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:39,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:57:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 46 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 22:57:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:57:39,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:39,892 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:39,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:39,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1392838253, now seen corresponding path program 1 times [2023-11-06 22:57:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:39,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103430746] [2023-11-06 22:57:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:40,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260017155] [2023-11-06 22:57:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:40,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:40,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:40,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:40,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:57:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:40,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:57:40,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:44,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:44,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:44,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103430746] [2023-11-06 22:57:44,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:44,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260017155] [2023-11-06 22:57:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260017155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:44,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:44,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58426442] [2023-11-06 22:57:44,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:44,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:45,000 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 46 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:45,824 INFO L93 Difference]: Finished difference Result 190 states and 319 transitions. [2023-11-06 22:57:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 22:57:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:45,838 INFO L225 Difference]: With dead ends: 190 [2023-11-06 22:57:45,839 INFO L226 Difference]: Without dead ends: 132 [2023-11-06 22:57:45,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:45,846 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 173 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:45,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 240 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:57:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-06 22:57:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 111. [2023-11-06 22:57:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 87 states have internal predecessors, (121), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 165 transitions. [2023-11-06 22:57:45,915 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 165 transitions. Word has length 87 [2023-11-06 22:57:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:45,917 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 165 transitions. [2023-11-06 22:57:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 165 transitions. [2023-11-06 22:57:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:57:45,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:45,923 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:45,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:57:46,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:46,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:46,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2072896623, now seen corresponding path program 1 times [2023-11-06 22:57:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718429577] [2023-11-06 22:57:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:46,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:46,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748003757] [2023-11-06 22:57:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:46,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:46,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:57:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:46,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:57:46,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:49,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:49,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718429577] [2023-11-06 22:57:49,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748003757] [2023-11-06 22:57:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748003757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564914407] [2023-11-06 22:57:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:49,337 INFO L87 Difference]: Start difference. First operand 111 states and 165 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:50,169 INFO L93 Difference]: Finished difference Result 240 states and 352 transitions. [2023-11-06 22:57:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 22:57:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:50,178 INFO L225 Difference]: With dead ends: 240 [2023-11-06 22:57:50,179 INFO L226 Difference]: Without dead ends: 132 [2023-11-06 22:57:50,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:50,181 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 128 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:50,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 299 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:57:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-06 22:57:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2023-11-06 22:57:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.368421052631579) internal successors, (104), 77 states have internal predecessors, (104), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 148 transitions. [2023-11-06 22:57:50,214 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 148 transitions. Word has length 87 [2023-11-06 22:57:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:50,216 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 148 transitions. [2023-11-06 22:57:50,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:50,217 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 148 transitions. [2023-11-06 22:57:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:57:50,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:50,219 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:50,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:57:50,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:50,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:50,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2093902831, now seen corresponding path program 1 times [2023-11-06 22:57:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880980210] [2023-11-06 22:57:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:50,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:50,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85190118] [2023-11-06 22:57:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:50,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:50,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:50,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:57:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:50,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:57:50,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:50,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:50,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:50,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880980210] [2023-11-06 22:57:50,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:50,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85190118] [2023-11-06 22:57:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85190118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:50,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:50,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:50,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405159911] [2023-11-06 22:57:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:50,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:50,999 INFO L87 Difference]: Start difference. First operand 101 states and 148 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:51,512 INFO L93 Difference]: Finished difference Result 228 states and 333 transitions. [2023-11-06 22:57:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:57:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 22:57:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:51,517 INFO L225 Difference]: With dead ends: 228 [2023-11-06 22:57:51,517 INFO L226 Difference]: Without dead ends: 130 [2023-11-06 22:57:51,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:51,519 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 138 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 343 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-06 22:57:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2023-11-06 22:57:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 87 states have internal predecessors, (120), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 164 transitions. [2023-11-06 22:57:51,544 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 164 transitions. Word has length 87 [2023-11-06 22:57:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:51,545 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 164 transitions. [2023-11-06 22:57:51,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 164 transitions. [2023-11-06 22:57:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:57:51,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:51,547 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:51,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:57:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:51,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:51,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1521006095, now seen corresponding path program 1 times [2023-11-06 22:57:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611169425] [2023-11-06 22:57:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495819698] [2023-11-06 22:57:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:51,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:51,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:51,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:57:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:57:51,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:52,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611169425] [2023-11-06 22:57:52,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495819698] [2023-11-06 22:57:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495819698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:52,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848550816] [2023-11-06 22:57:52,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:52,440 INFO L87 Difference]: Start difference. First operand 111 states and 164 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:52,734 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2023-11-06 22:57:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:57:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-11-06 22:57:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:52,737 INFO L225 Difference]: With dead ends: 238 [2023-11-06 22:57:52,737 INFO L226 Difference]: Without dead ends: 130 [2023-11-06 22:57:52,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:52,739 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 110 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:52,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 412 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:57:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-06 22:57:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 101. [2023-11-06 22:57:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.355263157894737) internal successors, (103), 77 states have internal predecessors, (103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-11-06 22:57:52,763 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 87 [2023-11-06 22:57:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:52,764 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-11-06 22:57:52,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-11-06 22:57:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:57:52,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:52,766 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:52,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-06 22:57:52,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:52,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1464857895, now seen corresponding path program 1 times [2023-11-06 22:57:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914739812] [2023-11-06 22:57:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:53,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:53,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287632529] [2023-11-06 22:57:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:53,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:53,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:57:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:53,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:57:53,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 22:57:53,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914739812] [2023-11-06 22:57:53,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287632529] [2023-11-06 22:57:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287632529] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-06 22:57:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614446647] [2023-11-06 22:57:53,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:53,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:57:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:53,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:57:53,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:57:53,707 INFO L87 Difference]: Start difference. First operand 101 states and 147 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:54,200 INFO L93 Difference]: Finished difference Result 198 states and 295 transitions. [2023-11-06 22:57:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:57:54,201 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 89 [2023-11-06 22:57:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:54,204 INFO L225 Difference]: With dead ends: 198 [2023-11-06 22:57:54,204 INFO L226 Difference]: Without dead ends: 196 [2023-11-06 22:57:54,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:57:54,206 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 143 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:54,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 370 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:57:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-06 22:57:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 109. [2023-11-06 22:57:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 85 states have internal predecessors, (111), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2023-11-06 22:57:54,238 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 89 [2023-11-06 22:57:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:54,239 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2023-11-06 22:57:54,239 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2023-11-06 22:57:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:57:54,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:54,241 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:54,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:54,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:54,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash 331186694, now seen corresponding path program 1 times [2023-11-06 22:57:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857899146] [2023-11-06 22:57:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640642586] [2023-11-06 22:57:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:54,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:54,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:54,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:57:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:57:54,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:54,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:54,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857899146] [2023-11-06 22:57:54,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640642586] [2023-11-06 22:57:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640642586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933920927] [2023-11-06 22:57:54,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,655 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:54,729 INFO L93 Difference]: Finished difference Result 227 states and 321 transitions. [2023-11-06 22:57:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-11-06 22:57:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:54,732 INFO L225 Difference]: With dead ends: 227 [2023-11-06 22:57:54,732 INFO L226 Difference]: Without dead ends: 121 [2023-11-06 22:57:54,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 22:57:54,734 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:54,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 144 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-06 22:57:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2023-11-06 22:57:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.3) internal successors, (117), 91 states have internal predecessors, (117), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2023-11-06 22:57:54,758 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 91 [2023-11-06 22:57:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:54,759 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2023-11-06 22:57:54,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2023-11-06 22:57:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:57:54,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:54,761 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:54,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:54,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:54,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1753538749, now seen corresponding path program 1 times [2023-11-06 22:57:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954593536] [2023-11-06 22:57:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:54,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097285589] [2023-11-06 22:57:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:54,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:55,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:57:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:55,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:57:55,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-06 22:57:55,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:55,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:55,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954593536] [2023-11-06 22:57:55,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:55,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097285589] [2023-11-06 22:57:55,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097285589] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:55,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:55,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-06 22:57:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502858799] [2023-11-06 22:57:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:57:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:57:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:57:55,873 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:56,508 INFO L93 Difference]: Finished difference Result 216 states and 313 transitions. [2023-11-06 22:57:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:57:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-11-06 22:57:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:56,512 INFO L225 Difference]: With dead ends: 216 [2023-11-06 22:57:56,513 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 22:57:56,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:57:56,514 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 167 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:56,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 406 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 22:57:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 117. [2023-11-06 22:57:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 93 states have internal predecessors, (119), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:57:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 163 transitions. [2023-11-06 22:57:56,546 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 163 transitions. Word has length 92 [2023-11-06 22:57:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:56,547 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 163 transitions. [2023-11-06 22:57:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 163 transitions. [2023-11-06 22:57:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:57:56,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:56,549 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:56,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:56,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:56,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:56,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1908839435, now seen corresponding path program 1 times [2023-11-06 22:57:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:56,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687235737] [2023-11-06 22:57:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:56,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387004142] [2023-11-06 22:57:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:56,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:56,782 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:56,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:57:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:56,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:57:56,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:57:56,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:56,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687235737] [2023-11-06 22:57:56,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:56,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387004142] [2023-11-06 22:57:56,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387004142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:56,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:56,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563301367] [2023-11-06 22:57:56,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:56,916 INFO L87 Difference]: Start difference. First operand 117 states and 163 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:56,979 INFO L93 Difference]: Finished difference Result 281 states and 389 transitions. [2023-11-06 22:57:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-11-06 22:57:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:56,983 INFO L225 Difference]: With dead ends: 281 [2023-11-06 22:57:56,983 INFO L226 Difference]: Without dead ends: 167 [2023-11-06 22:57:56,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 22:57:56,986 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 31 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:56,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-06 22:57:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2023-11-06 22:57:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 127 states have internal predecessors, (153), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 22:57:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2023-11-06 22:57:57,042 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 225 transitions. Word has length 94 [2023-11-06 22:57:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:57,043 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 225 transitions. [2023-11-06 22:57:57,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:57:57,043 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 225 transitions. [2023-11-06 22:57:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:57:57,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:57,047 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:57,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:57,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:57,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:57,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1072875547, now seen corresponding path program 1 times [2023-11-06 22:57:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:57,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336801184] [2023-11-06 22:57:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:57,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877125346] [2023-11-06 22:57:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:57,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:57,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:57:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:57,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:57:57,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-06 22:57:57,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-06 22:57:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336801184] [2023-11-06 22:57:57,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877125346] [2023-11-06 22:57:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877125346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:57,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:57:57,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:57:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015846086] [2023-11-06 22:57:57,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:57,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:57,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:57,590 INFO L87 Difference]: Start difference. First operand 165 states and 225 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-06 22:57:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:57,735 INFO L93 Difference]: Finished difference Result 305 states and 404 transitions. [2023-11-06 22:57:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:57:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2023-11-06 22:57:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:57,736 INFO L225 Difference]: With dead ends: 305 [2023-11-06 22:57:57,737 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:57:57,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:57,738 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 57 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:57,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 97 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:57:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:57:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:57:57,739 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 22:57:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:57:57,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2023-11-06 22:57:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:57,740 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:57:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-06 22:57:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:57:57,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:57:57,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:57:57,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:57,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:58:01,733 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 62) no Hoare annotation was computed. [2023-11-06 22:58:01,733 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 22:58:01,733 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-06 22:58:01,734 INFO L895 garLoopResultBuilder]: At program point L19-3(line 19) the Hoare annotation is: (let ((.cse0 (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536))) (.cse1 (= ~var_1_13~0 ~var_1_10~0)) (.cse2 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse14 (<= (mod ~var_1_7~0 256) 0)) (.cse15 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256)))) (or (and .cse0 .cse1 .cse2 (let ((.cse13 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse10 (+ 256 ~var_1_8~0)) (.cse12 (mod ~var_1_10~0 256))) (let ((.cse6 (<= 128 .cse12)) (.cse4 (and .cse13 (= .cse10 .cse12))) (.cse8 (and .cse13 (= ~var_1_8~0 .cse12))) (.cse7 (<= .cse12 127)) (.cse9 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse3 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse3) (let ((.cse5 (and .cse9 (= .cse10 .cse3)))) (or (and (or .cse4 .cse5) .cse6) (and .cse7 (or .cse5 .cse8))))) (and (let ((.cse11 (and (= ~var_1_8~0 .cse3) .cse9))) (or (and .cse6 (or .cse11 .cse4)) (and (or .cse11 .cse8) .cse7))) (<= .cse3 127))))) .cse14 .cse15) (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0 .cse1 .cse2 .cse14 .cse15))) [2023-11-06 22:58:01,734 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-11-06 22:58:01,734 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-11-06 22:58:01,734 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 48) no Hoare annotation was computed. [2023-11-06 22:58:01,735 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2023-11-06 22:58:01,735 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 94 105) the Hoare annotation is: false [2023-11-06 22:58:01,735 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-06 22:58:01,735 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-11-06 22:58:01,735 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:58:01,735 INFO L899 garLoopResultBuilder]: For program point L86(lines 86 89) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 61) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L54-4(line 54) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point L54-6(lines 54 58) no Hoare annotation was computed. [2023-11-06 22:58:01,736 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:58:01,737 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,737 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,737 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 64) no Hoare annotation was computed. [2023-11-06 22:58:01,737 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 22:58:01,737 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 22:58:01,738 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-06 22:58:01,738 INFO L895 garLoopResultBuilder]: At program point L97-2(lines 97 103) the Hoare annotation is: (let ((.cse0 (<= (mod ~var_1_7~0 256) 0))) (or (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0) (and (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536)) (= ~var_1_13~0 ~var_1_10~0) (let ((.cse11 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse8 (+ 256 ~var_1_8~0)) (.cse10 (mod ~var_1_10~0 256))) (let ((.cse4 (<= 128 .cse10)) (.cse2 (and .cse11 (= .cse8 .cse10))) (.cse6 (and .cse11 (= ~var_1_8~0 .cse10))) (.cse5 (<= .cse10 127)) (.cse7 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse1 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse1) (let ((.cse3 (and .cse7 (= .cse8 .cse1)))) (or (and (or .cse2 .cse3) .cse4) (and .cse5 (or .cse3 .cse6))))) (and (let ((.cse9 (and (= ~var_1_8~0 .cse1) .cse7))) (or (and .cse4 (or .cse9 .cse2)) (and (or .cse9 .cse6) .cse5))) (<= .cse1 127))))) .cse0 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256))))) [2023-11-06 22:58:01,738 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-11-06 22:58:01,738 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-06 22:58:01,739 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-06 22:58:01,739 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-06 22:58:01,739 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:58:01,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 22:58:01,740 INFO L895 garLoopResultBuilder]: At program point property_returnLabel#1(lines 90 93) the Hoare annotation is: (let ((.cse0 (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536))) (.cse1 (not (= |ULTIMATE.start_property_#res#1| 0))) (.cse2 (= ~var_1_13~0 ~var_1_10~0)) (.cse14 (<= (mod ~var_1_7~0 256) 0)) (.cse15 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256)))) (or (and .cse0 .cse1 .cse2 (let ((.cse13 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse10 (+ 256 ~var_1_8~0)) (.cse12 (mod ~var_1_10~0 256))) (let ((.cse6 (<= 128 .cse12)) (.cse4 (and .cse13 (= .cse10 .cse12))) (.cse8 (and .cse13 (= ~var_1_8~0 .cse12))) (.cse7 (<= .cse12 127)) (.cse9 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse3 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse3) (let ((.cse5 (and .cse9 (= .cse10 .cse3)))) (or (and (or .cse4 .cse5) .cse6) (and .cse7 (or .cse5 .cse8))))) (and (let ((.cse11 (and (= ~var_1_8~0 .cse3) .cse9))) (or (and .cse6 (or .cse11 .cse4)) (and (or .cse11 .cse8) .cse7))) (<= .cse3 127))))) .cse14 .cse15) (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0 .cse1 .cse2 .cse14 .cse15))) [2023-11-06 22:58:01,740 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,740 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,740 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:58:01,746 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,747 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,747 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,747 INFO L899 garLoopResultBuilder]: For program point L91-3(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,747 INFO L899 garLoopResultBuilder]: For program point L91-4(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,747 INFO L899 garLoopResultBuilder]: For program point L91-6(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,748 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 22:58:01,748 INFO L899 garLoopResultBuilder]: For program point L91-8(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,748 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-11-06 22:58:01,748 INFO L899 garLoopResultBuilder]: For program point L91-10(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,748 INFO L899 garLoopResultBuilder]: For program point L91-12(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,748 INFO L899 garLoopResultBuilder]: For program point L91-14(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,749 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-06 22:58:01,749 INFO L899 garLoopResultBuilder]: For program point L91-16(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,749 INFO L899 garLoopResultBuilder]: For program point L91-18(line 91) no Hoare annotation was computed. [2023-11-06 22:58:01,749 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,749 INFO L895 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,749 INFO L899 garLoopResultBuilder]: For program point L84(lines 65 85) no Hoare annotation was computed. [2023-11-06 22:58:01,749 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 63) no Hoare annotation was computed. [2023-11-06 22:58:01,750 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-11-06 22:58:01,750 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-06 22:58:01,750 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-06 22:58:01,750 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-06 22:58:01,751 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-06 22:58:01,754 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:58:01,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:58:01 BoogieIcfgContainer [2023-11-06 22:58:01,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:58:01,785 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:58:01,785 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:58:01,785 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:58:01,786 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:39" (3/4) ... [2023-11-06 22:58:01,788 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:58:01,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 22:58:01,799 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 22:58:01,800 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:58:01,800 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:58:01,801 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:58:01,847 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) [2023-11-06 22:58:01,956 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) [2023-11-06 22:58:01,971 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:58:01,972 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:58:01,972 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:58:01,972 INFO L158 Benchmark]: Toolchain (without parser) took 23241.55ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 119.1MB in the beginning and 217.1MB in the end (delta: -98.0MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,973 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 129.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:58:01,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.71ms. Allocated memory is still 161.5MB. Free memory was 118.5MB in the beginning and 106.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.22ms. Allocated memory is still 161.5MB. Free memory was 106.0MB in the beginning and 103.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,974 INFO L158 Benchmark]: Boogie Preprocessor took 36.57ms. Allocated memory is still 161.5MB. Free memory was 103.3MB in the beginning and 101.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,974 INFO L158 Benchmark]: RCFGBuilder took 627.02ms. Allocated memory is still 161.5MB. Free memory was 101.2MB in the beginning and 82.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,975 INFO L158 Benchmark]: TraceAbstraction took 22002.76ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 81.9MB in the beginning and 226.8MB in the end (delta: -144.9MB). Peak memory consumption was 114.4MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,975 INFO L158 Benchmark]: Witness Printer took 187.34ms. Allocated memory is still 264.2MB. Free memory was 226.8MB in the beginning and 217.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:58:01,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 129.5MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.71ms. Allocated memory is still 161.5MB. Free memory was 118.5MB in the beginning and 106.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.22ms. Allocated memory is still 161.5MB. Free memory was 106.0MB in the beginning and 103.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.57ms. Allocated memory is still 161.5MB. Free memory was 103.3MB in the beginning and 101.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.02ms. Allocated memory is still 161.5MB. Free memory was 101.2MB in the beginning and 82.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22002.76ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 81.9MB in the beginning and 226.8MB in the end (delta: -144.9MB). Peak memory consumption was 114.4MB. Max. memory is 16.1GB. * Witness Printer took 187.34ms. Allocated memory is still 264.2MB. Free memory was 226.8MB in the beginning and 217.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. 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, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.9s, OverallIterations: 9, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 961 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 954 mSDsluCounter, 2465 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1653 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1263 IncrementalHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 812 mSDtfsCounter, 1263 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1105 GetRequests, 1023 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=8, InterpolantAutomatonStates: 73, 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, 9 MinimizatonAttempts, 292 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 212 PreInvPairs, 260 NumberOfFragments, 673 HoareAnnotationTreeSize, 212 FomulaSimplifications, 43819 FormulaSimplificationTreeSizeReduction, 2.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 17891 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 809 NumberOfCodeBlocks, 809 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1073 ConstructedInterpolants, 0 QuantifiedInterpolants, 4729 SizeOfPredicates, 67 NumberOfNonLiveVariables, 2023 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 3627/3744 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: 94]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && !((\result == 0))) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && !((\result == 0))) && (var_1_13 == var_1_10)) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: ((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_7 % 256) <= 0)) || ((((((var_1_14 % 65536) == (var_1_8 % 65536)) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((((var_1_14 % 65536) == (var_1_8 % 65536)) && (var_1_13 == var_1_10)) && !((cond == 0))) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256))) || (((((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_14 % 65536) == (var_1_8 % 65536))) && (var_1_13 == var_1_10)) && !((cond == 0))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) RESULT: Ultimate proved your program to be correct! [2023-11-06 22:58:02,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f53330ca-d386-4873-aebe-d879900669a0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE