./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:41,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:41,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:41:41,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:41,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:41,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:41,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:41,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:41,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:41,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:41,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:41,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:41,945 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:41,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:41,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:41,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:41,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:41,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:41,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:41,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:41,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:41,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:41,951 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:41,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:41,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:41,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:41,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:41,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:41,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:41,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:41,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:41,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:41,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:41,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:41,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:41,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:41,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:41,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:41,958 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:41,959 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_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81c7729345d5d6e6cfdedd64c331a4f8f6005773af2c566c0c24cc964b2ec390 [2023-11-19 07:41:42,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:42,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:42,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:42,369 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:42,370 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:42,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-19 07:41:45,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:45,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:45,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i [2023-11-19 07:41:45,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/data/5f71f1549/e86204d55e0648a9ae824e575de273ef/FLAG6fabf4bf4 [2023-11-19 07:41:45,777 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/data/5f71f1549/e86204d55e0648a9ae824e575de273ef [2023-11-19 07:41:45,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:45,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:45,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:45,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:45,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:45,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442737ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:45, skipping insertion in model container [2023-11-19 07:41:45,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:45" (1/1) ... [2023-11-19 07:41:45,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:46,013 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_02a06556-c3e0-472a-822e-8f734eefeb40/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-19 07:41:46,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:46,094 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:46,107 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_02a06556-c3e0-472a-822e-8f734eefeb40/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-19.i[916,929] [2023-11-19 07:41:46,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:46,171 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:46,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46 WrapperNode [2023-11-19 07:41:46,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:46,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:46,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:46,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:46,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,275 INFO L138 Inliner]: procedures = 26, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 407 [2023-11-19 07:41:46,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:46,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:46,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:46,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:46,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:46,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:46,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:46,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:46,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (1/1) ... [2023-11-19 07:41:46,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:46,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:46,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:46,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:41:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:41:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:46,626 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:46,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:47,253 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:47,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:47,277 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:41:47,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:47 BoogieIcfgContainer [2023-11-19 07:41:47,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:47,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:47,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:47,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:47,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:45" (1/3) ... [2023-11-19 07:41:47,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e95916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:47, skipping insertion in model container [2023-11-19 07:41:47,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:46" (2/3) ... [2023-11-19 07:41:47,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e95916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:47, skipping insertion in model container [2023-11-19 07:41:47,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:47" (3/3) ... [2023-11-19 07:41:47,301 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-19.i [2023-11-19 07:41:47,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:47,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:41:47,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:47,381 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ab2e567, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:47,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:41:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:41:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:41:47,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:47,404 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:47,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:47,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 504218985, now seen corresponding path program 1 times [2023-11-19 07:41:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370710584] [2023-11-19 07:41:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:47,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457958093] [2023-11-19 07:41:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:47,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:47,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:47,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:41:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:41:47,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:41:48,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:48,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:48,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370710584] [2023-11-19 07:41:48,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457958093] [2023-11-19 07:41:48,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457958093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:48,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:48,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985925058] [2023-11-19 07:41:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:48,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:48,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:48,148 INFO L87 Difference]: Start difference. First operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:48,258 INFO L93 Difference]: Finished difference Result 197 states and 308 transitions. [2023-11-19 07:41:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 07:41:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:48,277 INFO L225 Difference]: With dead ends: 197 [2023-11-19 07:41:48,277 INFO L226 Difference]: Without dead ends: 100 [2023-11-19 07:41:48,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:48,306 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:48,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 394 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-19 07:41:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-11-19 07:41:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:41:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2023-11-19 07:41:48,383 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 132 [2023-11-19 07:41:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:48,386 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2023-11-19 07:41:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2023-11-19 07:41:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:41:48,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:48,396 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:48,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:41:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:41:48,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:48,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash 506066027, now seen corresponding path program 1 times [2023-11-19 07:41:48,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702445935] [2023-11-19 07:41:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:48,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638675694] [2023-11-19 07:41:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:48,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:41:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:49,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:41:49,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:49,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 07:41:49,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:41:49,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:41:50,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:50,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:50,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:50,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:50,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 45 [2023-11-19 07:41:50,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:50,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 83 [2023-11-19 07:41:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-19 07:41:50,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:41:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:50,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702445935] [2023-11-19 07:41:50,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638675694] [2023-11-19 07:41:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638675694] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:50,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-19 07:41:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665000380] [2023-11-19 07:41:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:41:50,807 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:51,382 INFO L93 Difference]: Finished difference Result 275 states and 387 transitions. [2023-11-19 07:41:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:41:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 07:41:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:51,390 INFO L225 Difference]: With dead ends: 275 [2023-11-19 07:41:51,390 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 07:41:51,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:41:51,394 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 182 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 627 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:41:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 07:41:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 106. [2023-11-19 07:41:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 87 states have internal predecessors, (116), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:41:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2023-11-19 07:41:51,418 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 132 [2023-11-19 07:41:51,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:51,419 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2023-11-19 07:41:51,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2023-11-19 07:41:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:41:51,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:51,423 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:51,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:51,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:51,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:51,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1082281875, now seen corresponding path program 1 times [2023-11-19 07:41:51,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:51,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275627916] [2023-11-19 07:41:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:51,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987159874] [2023-11-19 07:41:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:51,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:51,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:51,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:41:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:51,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:41:51,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:52,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:41:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 07:41:52,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:41:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275627916] [2023-11-19 07:41:52,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:52,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987159874] [2023-11-19 07:41:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987159874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:52,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:52,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891640894] [2023-11-19 07:41:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:52,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:52,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:52,040 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:52,366 INFO L93 Difference]: Finished difference Result 291 states and 407 transitions. [2023-11-19 07:41:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 07:41:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:52,374 INFO L225 Difference]: With dead ends: 291 [2023-11-19 07:41:52,374 INFO L226 Difference]: Without dead ends: 188 [2023-11-19 07:41:52,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:52,377 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 85 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:52,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 553 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:41:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-19 07:41:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2023-11-19 07:41:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:41:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2023-11-19 07:41:52,404 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 132 [2023-11-19 07:41:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:52,406 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2023-11-19 07:41:52,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 07:41:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2023-11-19 07:41:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:41:52,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:52,412 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:52,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:52,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:41:52,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:52,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -253394688, now seen corresponding path program 1 times [2023-11-19 07:41:52,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:52,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515538974] [2023-11-19 07:41:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:52,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101908555] [2023-11-19 07:41:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:52,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:52,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:52,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:41:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:52,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:41:52,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:53,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:41:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:53,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:53,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:53,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:53,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:53,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:54,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:54,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:54,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:54,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:41:54,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:41:54,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:41:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 78 proven. 320 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:41:54,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:54,233 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_205) |c_~#signed_char_Array_0~0.base|) |c_~#signed_char_Array_0~0.offset|) 1))) is different from false [2023-11-19 07:41:54,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515538974] [2023-11-19 07:41:54,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101908555] [2023-11-19 07:41:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101908555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:54,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 07:41:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570895337] [2023-11-19 07:41:54,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:41:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:41:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-11-19 07:41:54,295 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 07:41:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:54,870 INFO L93 Difference]: Finished difference Result 248 states and 347 transitions. [2023-11-19 07:41:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:41:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 133 [2023-11-19 07:41:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:54,873 INFO L225 Difference]: With dead ends: 248 [2023-11-19 07:41:54,874 INFO L226 Difference]: Without dead ends: 140 [2023-11-19 07:41:54,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:41:54,876 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 396 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:54,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 250 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:41:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-19 07:41:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 115. [2023-11-19 07:41:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:41:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 159 transitions. [2023-11-19 07:41:54,907 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 159 transitions. Word has length 133 [2023-11-19 07:41:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:54,908 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 159 transitions. [2023-11-19 07:41:54,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 07:41:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 159 transitions. [2023-11-19 07:41:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:41:54,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:54,911 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:54,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:55,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:55,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:55,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash -840200702, now seen corresponding path program 1 times [2023-11-19 07:41:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840122565] [2023-11-19 07:41:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:55,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:41:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222078686] [2023-11-19 07:41:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:55,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:55,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:55,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:41:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:55,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:41:55,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:55,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:41:55,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:56,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:56,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:56,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:41:56,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:56,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-19 07:41:56,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:56,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:41:56,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-11-19 07:41:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 07:41:56,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:41:56,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 23 [2023-11-19 07:41:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-11-19 07:41:56,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:56,744 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_263 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_263))) (let ((.cse0 (select .cse1 |c_~#unsigned_char_Array_0~0.base|))) (< (+ (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256) (select (select .cse1 |c_~#signed_long_int_Array_0~0.base|) (+ 12 |c_~#signed_long_int_Array_0~0.offset|))) (mod (select .cse0 (+ |c_~#unsigned_char_Array_0~0.offset| 1)) 256))))) is different from false [2023-11-19 07:41:59,062 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_261 (Array Int Int)) (v_ArrVal_263 (Array Int Int)) (|~#signed_char_Array_0~0.offset| Int)) (let ((.cse5 (+ |~#signed_long_int_Array_0~0.offset| 12)) (.cse2 (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_261) |c_~#signed_char_Array_0~0.base|) (+ |~#signed_char_Array_0~0.offset| 1)))) (let ((.cse1 (+ |c_~#unsigned_char_Array_0~0.offset| 1)) (.cse3 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| (store v_ArrVal_261 .cse5 .cse2)))) (or (let ((.cse0 (select .cse3 |c_~#unsigned_char_Array_0~0.base|))) (< (mod (select .cse0 .cse1) 256) (+ .cse2 (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256) 1))) (let ((.cse4 (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_263))) (let ((.cse6 (select .cse4 |c_~#unsigned_char_Array_0~0.base|))) (< (+ (select (select .cse4 |c_~#signed_long_int_Array_0~0.base|) .cse5) (mod (select .cse6 |c_~#unsigned_char_Array_0~0.offset|) 256)) (mod (select .cse6 .cse1) 256)))))))) is different from false [2023-11-19 07:41:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840122565] [2023-11-19 07:41:59,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:41:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222078686] [2023-11-19 07:41:59,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222078686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:59,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:41:59,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:41:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248945058] [2023-11-19 07:41:59,174 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:59,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:41:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:41:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=314, Unknown=3, NotChecked=74, Total=462 [2023-11-19 07:41:59,176 INFO L87 Difference]: Start difference. First operand 115 states and 159 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:42:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:02,628 INFO L93 Difference]: Finished difference Result 347 states and 474 transitions. [2023-11-19 07:42:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:42:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 133 [2023-11-19 07:42:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:02,631 INFO L225 Difference]: With dead ends: 347 [2023-11-19 07:42:02,631 INFO L226 Difference]: Without dead ends: 235 [2023-11-19 07:42:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=239, Invalid=696, Unknown=3, NotChecked=118, Total=1056 [2023-11-19 07:42:02,633 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 476 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 2 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:02,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 567 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 773 Invalid, 40 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 07:42:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-19 07:42:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 127. [2023-11-19 07:42:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 107 states have internal predecessors, (142), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:42:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-19 07:42:02,650 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 133 [2023-11-19 07:42:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:02,651 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-19 07:42:02,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-19 07:42:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-19 07:42:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:42:02,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:02,654 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:02,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 07:42:02,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:02,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:02,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1657849152, now seen corresponding path program 1 times [2023-11-19 07:42:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:02,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457813040] [2023-11-19 07:42:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:02,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:42:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327714767] [2023-11-19 07:42:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:02,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:02,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:02,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:42:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:03,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-19 07:42:03,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:03,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:03,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2023-11-19 07:42:03,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:42:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:04,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:42:04,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:04,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:42:04,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:04,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:42:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:04,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:42:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:04,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:42:05,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:05,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:05,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:05,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 55 [2023-11-19 07:42:05,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:05,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:05,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 39 [2023-11-19 07:42:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 284 proven. 30 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-19 07:42:05,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:05,415 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_319 (Array Int Int))) (not (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256) (mod (select .cse0 (+ |c_~#unsigned_char_Array_0~0.offset| 1)) 256))))) (forall ((v_ArrVal_319 (Array Int Int))) (not (= (mod (let ((.cse1 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_long_int_Array_0~0.base|))) (+ (select .cse1 (+ |c_~#unsigned_long_int_Array_0~0.offset| 4)) (select .cse1 |c_~#unsigned_long_int_Array_0~0.offset|))) 4294967296) 0)))) is different from false [2023-11-19 07:42:05,607 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_~#unsigned_char_Array_0~0.offset| 1))) (or (let ((.cse0 (select |c_#memory_int| |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse0 .cse1) 256) (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256))) (let ((.cse4 (select |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base|))) (and (forall ((|~#unsigned_long_int_Array_0~0.offset| Int)) (let ((.cse3 (+ |~#unsigned_long_int_Array_0~0.offset| 4))) (or (forall ((v_ArrVal_319 (Array Int Int))) (not (= (mod (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_long_int_Array_0~0.base|))) (+ (select .cse2 |~#unsigned_long_int_Array_0~0.offset|) (select .cse2 .cse3))) 4294967296) 0))) (= 0 (mod (+ (select .cse4 |~#unsigned_long_int_Array_0~0.offset|) (select .cse4 .cse3)) 4294967296))))) (or (forall ((|~#unsigned_long_int_Array_0~0.offset| Int)) (= 0 (mod (+ (select .cse4 |~#unsigned_long_int_Array_0~0.offset|) (select .cse4 (+ |~#unsigned_long_int_Array_0~0.offset| 4))) 4294967296))) (forall ((v_ArrVal_319 (Array Int Int))) (not (let ((.cse5 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse5 |c_~#unsigned_char_Array_0~0.offset|) 256) (mod (select .cse5 .cse1) 256)))))))))) is different from false [2023-11-19 07:42:05,664 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_~#unsigned_char_Array_0~0.offset| 1))) (and (forall ((v_ArrVal_318 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_318))) (or (let ((.cse0 (select .cse2 |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse0 .cse1) 256) (mod (select .cse0 |c_~#unsigned_char_Array_0~0.offset|) 256))) (forall ((|~#unsigned_long_int_Array_0~0.offset| Int)) (= (mod (let ((.cse3 (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|))) (+ (select .cse3 (+ |~#unsigned_long_int_Array_0~0.offset| 4)) (select .cse3 |~#unsigned_long_int_Array_0~0.offset|))) 4294967296) 0)) (forall ((v_ArrVal_319 (Array Int Int))) (not (let ((.cse4 (select (store .cse2 |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse4 .cse1) 256) (mod (select .cse4 |c_~#unsigned_char_Array_0~0.offset|) 256)))))))) (forall ((v_ArrVal_318 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_318))) (or (let ((.cse5 (select .cse6 |c_~#unsigned_char_Array_0~0.base|))) (= (mod (select .cse5 .cse1) 256) (mod (select .cse5 |c_~#unsigned_char_Array_0~0.offset|) 256))) (forall ((|~#unsigned_long_int_Array_0~0.offset| Int)) (let ((.cse8 (+ |~#unsigned_long_int_Array_0~0.offset| 4))) (or (forall ((v_ArrVal_319 (Array Int Int))) (not (= 0 (mod (let ((.cse7 (select (store .cse6 |c_~#signed_char_Array_0~0.base| v_ArrVal_319) |c_~#unsigned_long_int_Array_0~0.base|))) (+ (select .cse7 |~#unsigned_long_int_Array_0~0.offset|) (select .cse7 .cse8))) 4294967296)))) (= (mod (let ((.cse9 (select .cse6 |c_~#unsigned_long_int_Array_0~0.base|))) (+ (select .cse9 .cse8) (select .cse9 |~#unsigned_long_int_Array_0~0.offset|))) 4294967296) 0))))))))) is different from false [2023-11-19 07:42:05,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:05,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457813040] [2023-11-19 07:42:05,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:42:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327714767] [2023-11-19 07:42:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327714767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:05,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:05,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 07:42:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088852995] [2023-11-19 07:42:05,948 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:05,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:42:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:42:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=286, Unknown=4, NotChecked=108, Total=462 [2023-11-19 07:42:05,952 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:42:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:07,947 INFO L93 Difference]: Finished difference Result 324 states and 443 transitions. [2023-11-19 07:42:07,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 07:42:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 133 [2023-11-19 07:42:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:07,952 INFO L225 Difference]: With dead ends: 324 [2023-11-19 07:42:07,952 INFO L226 Difference]: Without dead ends: 200 [2023-11-19 07:42:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=714, Unknown=4, NotChecked=174, Total=1056 [2023-11-19 07:42:07,957 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 363 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:07,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 439 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:42:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-19 07:42:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2023-11-19 07:42:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3174603174603174) internal successors, (166), 126 states have internal predecessors, (166), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:42:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 200 transitions. [2023-11-19 07:42:07,989 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 200 transitions. Word has length 133 [2023-11-19 07:42:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:07,991 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 200 transitions. [2023-11-19 07:42:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 07:42:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 200 transitions. [2023-11-19 07:42:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:42:07,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:07,997 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:08,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:08,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:08,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1616049790, now seen corresponding path program 1 times [2023-11-19 07:42:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:08,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511215627] [2023-11-19 07:42:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:08,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:42:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658490308] [2023-11-19 07:42:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:08,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:08,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:08,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:08,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a06556-c3e0-472a-822e-8f734eefeb40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:42:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:09,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-19 07:42:09,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:09,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:09,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:09,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:09,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2023-11-19 07:42:09,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:42:10,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:42:10,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:10,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 07:42:10,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:10,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:42:11,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2023-11-19 07:42:11,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:11,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2023-11-19 07:42:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:12,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:12,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:12,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:12,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:12,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2023-11-19 07:42:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:13,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 87 [2023-11-19 07:42:13,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 99 [2023-11-19 07:42:13,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:13,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:13,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 164 treesize of output 132 [2023-11-19 07:42:15,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:15,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:15,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:15,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:15,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:15,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:15,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 197 treesize of output 143 [2023-11-19 07:42:34,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:34,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:34,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:34,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:34,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:42:34,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 224 treesize of output 88 [2023-11-19 07:42:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 406 proven. 39 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-19 07:42:36,335 INFO L327 TraceCheckSpWp]: Computing backward predicates...